LITE

Lumentum Holdings Inc.

Next est. report 2026-11-03 · AMC

AI '25: DC Connectivity & Power AI '25: Data Center Interconnects AI '26: Light & Copper Connectivity AI '26: Photonics Connectivity '24: Optical ComponentsData Centers '25: Optical & Fiber SystemsMegaTech '25: Google TPU ComplexMegaTech '25: Nvidia GPU ComplexOptical Connectivity '26: AI Optical Transceivers

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Overview

Lumentum Holdings Inc. manufactures optical and photonic products for high-capacity fiber optic networks and OEM applications. Its Optical Communications segmen

Lumentum Holdings Inc. manufactures optical and photonic products for high-capacity fiber optic networks and OEM applications. Its Optical Communications segment (~64% of revenue) provides laser chips and transceivers for hyperscale cloud and AI customers like Google. The Commercial Lasers segment (~36% of revenue) offers various lasers for industrial uses. Lumentum is a critical AI infrastructure supplier.

Key Inputs And Sourcing

1. Indium Phosphide (InP) Wafers/Substrates

component · Japan, USA, external (e.g., AXT Inc.) · unknown

Source Critical raw material for laser chips; Lumentum has fabs in Japan and is converting Greensboro fab; secured additional supply from AXT Inc.

Confidence: high

2. Electrical Components (for Transceivers)

component · unknown · unknown

Source Explicitly mentioned as a supply chain constraint capping shipments for transceivers.

Confidence: high

3. Manufacturing Labor

labor · Japan, USA, Thailand, UK · unknown

Source Implied by extensive manufacturing operations across multiple geographies for fabs and assembly.

Confidence: medium

4. Energy (Electricity, Gas)

energy · Japan, USA, Thailand, UK · unknown

Source Fabs and manufacturing facilities are energy-intensive; 'better manufacturing utilization' impacts costs.

Confidence: medium

5. Specialized Chemicals and Gases

component · unknown · unknown

Source Standard consumables for semiconductor wafer fabrication, though not explicitly detailed in transcript.

Confidence: medium

Industry Publications

LightCounting (lightcounting.com) — Premier market research for optical communications, crucial for transceiver and component trends, especially 800G/1.6T and Co-Packaged Optics.
Dell'Oro Group (delloro.com) — Leading market research for networking, telecom, and data center equipment, including high-speed Ethernet switches and optical transceivers.
Cignal AI (cignal.ai) — Provides market research and analysis specifically on optical networking and data center interconnects, highly relevant for Lumentum's core business.
Lightwave (lightwaveonline.com) — A long-standing publication focused on optical communications technology and business, covering components, systems, and networks.
Photonics Spectra (photonics.com) — Covers the photonics industry, including lasers, optics, imaging, and fiber optics, relevant for Lumentum's laser and optical component businesses.

Economic Data Watch

1. World Semiconductor Trade Statistics (WSTS) — Global Semiconductor Sales

Metric/field Worldwide Semiconductor Sales (3-month moving average, in USD billions)

Cadence monthly

Why it matters Broad indicator of semiconductor industry health, foundational for Lumentum's laser chip and optical component business. Strong sales signal robust end-market demand.

Signal to watch Accelerating growth or sustained high levels

Confidence: high

2. Company earnings reports (Google, Meta, Microsoft, Amazon) — Capital Expenditure (CapEx) on AI Infrastructure

Metric/field Aggregate Capital Expenditure (CapEx) by Hyperscale Cloud Providers on AI Infrastructure

Cadence quarterly

Why it matters Directly drives demand for Lumentum's high-speed optical interconnects, transceivers, OCS, and CPO solutions for AI data centers.

Signal to watch Rising or reaffirmed CapEx plans, especially for AI/cloud infrastructure

Confidence: high

3. Institute for Supply Management (ISM) — ISM Manufacturing PMI

Metric/field Purchasing Managers' Index (PMI) - Manufacturing

Cadence monthly

Why it matters Indicates the health of the manufacturing sector, which can influence demand for Lumentum's commercial lasers and overall industrial activity.

Signal to watch PMI above 50 (expansion) or increasing trend

Confidence: medium

4. U.S. Census Bureau / Construction Spending — Value of Construction Put in Place

Metric/field Value of New Nonresidential Construction Put in Place - Commercial (specifically 'Data Centers' if available, otherwise broader commercial)

Cadence monthly

Why it matters Reflects investment in new data center infrastructure, which is a key end market for Lumentum's optical communication products.

Signal to watch Increasing trend in data center or relevant commercial construction spending

Confidence: medium

5. Federal Reserve Economic Data (FRED) — Interest Rates

Metric/field Effective Federal Funds Rate (DFF)

Cadence daily

Why it matters Influences borrowing costs for hyperscalers and other customers, potentially impacting their capital expenditure decisions and overall economic activity.

Signal to watch Stable or decreasing rates (favorable for investment)

Confidence: medium

Free Alt Data Watch

1. Google Trends — Search Interest

Metric/field Search volume index for 'AI data center'

Cadence weekly

Why it matters Reflects general public and industry interest in the core demand drivers for Lumentum's AI-related optical products.

Signal to watch Rising search interest

Confidence: high

2. Google Trends — Search Interest

Metric/field Search volume index for 'Co-Packaged Optics'

Cadence weekly

Why it matters Indicates growing awareness and potential adoption of next-generation optical interconnect technology, a key future growth area for Lumentum.

Signal to watch Rising search interest

Confidence: high

3. Google Trends — Search Interest

Metric/field Search volume index for '1.6T transceiver'

Cadence weekly

Why it matters Directly tracks interest in Lumentum's current and near-term high-volume product offerings for AI data centers.

Signal to watch Rising search interest

Confidence: high

4. LinkedIn Talent Insights / Public Job Boards (e.g., Indeed) — Job Postings

Metric/field Number of open job postings for 'Optical Engineer' or 'Photonics Engineer' (global or key regions)

Cadence monthly

Why it matters Indicates industry-wide investment and demand for specialized talent in Lumentum's core technology areas, signaling growth or contraction.

Signal to watch Increasing number of job postings

Confidence: medium

5. Reddit (e.g., r/hardware, r/networking) — Subreddit Activity

Metric/field Number of posts/comments mentioning 'AI optics' or 'data center interconnects'

Cadence weekly

Why it matters Provides anecdotal insights into industry buzz, technical challenges, and emerging trends from practitioners and enthusiasts.

Signal to watch Increasing discussion volume and positive sentiment

Confidence: low

Paid Alt Data Watch

1. LightCounting / Dell'Oro Group — Optical Transceiver Market Report

Metric/field Global 800G/1.6T Optical Transceiver Shipments (Units) and Revenue (USD)

Cadence quarterly

Why it matters Directly measures the demand and adoption rates for Lumentum's core high-speed transceiver products in AI data centers.

Signal to watch Shipments and revenue exceeding forecasts or accelerating growth

Confidence: high

2. Dell'Oro Group — High-Speed Ethernet Switch Market Share

Metric/field Global High-Speed Data Center Ethernet Switch Port Shipments (800G and above)

Cadence quarterly

Why it matters Indicates the overall expansion and upgrade cycle of AI data center networks, which drives demand for Lumentum's optical components and transceivers.

Signal to watch Accelerating shipments of high-speed switch ports

Confidence: high

3. Supplyframe / Resilinc — Component Lead Times and Pricing

Metric/field Indium Phosphide (InP) Wafer Lead Times and Pricing Trends

Cadence monthly

Why it matters InP wafers are critical raw materials for Lumentum's laser chips. Changes in lead times and pricing directly impact production capacity, costs, and margins.

Signal to watch Decreasing lead times and stable/favorable pricing (indicating easing supply constraints)

Confidence: high

4. Revelio Labs / Thinknum Alternative Data — Job Posting Analytics

Metric/field Optical Engineer Hiring Trends (Lumentum vs. key competitors like Coherent, Broadcom)

Cadence monthly

Why it matters Provides granular insights into Lumentum's and competitors' strategic hiring, R&D investment, and capacity expansion efforts in specific technical areas.

Signal to watch Lumentum's hiring outpacing competitors in critical optical/photonics roles

Confidence: medium

5. LightCounting / Cignal AI — Optical Components Market Share

Metric/field Market Share of Key Optical Components (e.g., EMLs, Pump Lasers, CW Lasers)

Cadence quarterly

Why it matters Tracks Lumentum's competitive positioning and market penetration in its highest-margin product categories, crucial for assessing its 'sold out' status and pricing power.

Signal to watch Lumentum maintaining or increasing market share in key laser/component segments

Confidence: high

Search Keywords Brand Product

800G optical module
1.6T optical module
Co-Packaged Optics CPO
Near-Packaged Optics NPO
Optical Circuit Switch OCS
External Laser Source ELS module
EML laser
CW laser
Pump laser
Narrow linewidth laser
3D sensing lasers
Ultrafast lasers
ROADMs
Optical Amplifiers
AI optical infrastructure
Hyperscale data centers
Cloud transceivers
Optical communications
Commercial lasers
Indium phosphide fab
Wafer capacity
Supply chain constraints
Optical scale-up
Optical scale-across
AI compute workloads
Data center connectivity
Photonics

Search Keywords Event Phrases

Lumentum earnings
Lumentum Q4 FY26 results
Lumentum Q1 FY27 guidance
OFC Conference

What They Do (Plain English & Analogies): Lumentum makes the essential "light-based" parts and systems that power the internet and advanced technologies like AI. Imagine the internet as a vast highway system. Lumentum provides the super-fast fiber optic cables and the traffic lights (optical switches) and engines (lasers and transceivers) that allow massive amounts of data (like videos, AI calculations, and phone calls) to travel across these highways at incredible speeds and over long distances. They also make specialized lasers used in manufacturing, biotechnology, and 3D sensing, acting like precision tools for various industries. The company operates through two main parts: Optical Communications, which focuses on components, modules, and subsystems for high-capacity fiber optic networks, and Commercial Lasers, which produces various laser technologies for industrial and OEM applications.
Very Brief History: Lumentum Holdings Inc. was established in 2015, headquartered in San Jose, California, following a split from JDS Uniphase. It quickly emerged as a global leader in optical and photonic product manufacturing. The company has significantly expanded its capabilities and capacity, notably through the acquisition of NeoPhotonics Corporation in November 2021, and strategic investments in manufacturing, including a fifth indium phosphide fab in Greensboro, North Carolina, and facilities in Thailand.
"Street Stereotype": Lumentum is largely perceived by investors and analysts as a pure-play AI optical infrastructure supplier. The market sees it as benefiting significantly from the accelerating demand for laser chips and high-speed optical interconnects (like 800G and 1.6T transceivers) driven by AI and hyperscale data center buildouts. There's a strong focus on its expanding wafer capacity, improving transceiver execution, and the potential upside from its Optical Circuit Switch (OCS) and Co-Packaged Optics (CPO) offerings, which are considered significant growth vectors. The market closely watches its ability to meet surging demand amidst supply constraints and manage customer concentration.
Subsidiaries On Linked In*: {"subsidiaries":[]}
Customer Sectors & Example Clients: Lumentum's customer sectors include telecommunications, data communications, consumer, industrial, cloud, and AI. Specific top clients are hyperscalers, with Google explicitly mentioned as a major customer driving significant demand for Lumentum's business. NVIDIA is also a direct investor in Lumentum.
New Customers / Segments They'Re Targeting: Lumentum is actively targeting new opportunities in Near-Packaged Optics (NPO), which is seen as completely additive to their existing market and significantly increases the optical Total Addressable Market (TAM). They are also seeing strong NPO momentum across multiple high-velocity engagements, including their largest CPO customer exploring NPO for specific new use cases. Additionally, the company is expanding its OCS product roadmap to include higher and lower port count products, as well as specialized in-tray offerings. They also have visibility to an expanding set of 3D sensing applications expected to drive growth with their primary customer.
Sales Geographies And Expansion Plans: Lumentum currently sells its products across the Americas, Asia-Pacific, Europe, the Middle East, and Africa. While the company's recent earnings call did not explicitly detail plans to expand into *new* geographic regions, management emphasizes expanding sales within its existing hyperscaler customer base globally, particularly for AI and cloud infrastructure, and increasing market share in high-growth product areas like transceivers, OCS, and CPO.
How Key Themes May Help/Hurt: Lumentum is a direct beneficiary of the "AI '26: Light & Copper Connectivity" theme, as the accelerating AI supercycle drives unprecedented capital expenditure in data centers, fueling insatiable demand for 800G and 1.6T optical interconnects. The fundamental technological shift from electrical to advanced optical solutions, including Co-Packaged Optics (CPO) and Near-Packaged Optics (NPO), creates new, higher-value product cycles essential for scaling denser, more power-efficient AI clusters, directly benefiting Lumentum's laser chips and optical systems. However, the company can be hurt by persistent supply chain constraints for critical optical components like indium phosphide wafers and electrical components, which currently cap its revenue upside and force allocation choices. High customer concentration among a few hyperscalers also creates vulnerability to shifts in their capital expenditure cycles or strategic changes.

3 Main Long-Term Bull Details

Dominant Position in High-Margin AI Optical Components: Lumentum is a leading supplier of critical high-margin optical components, including EMLs, pump lasers, narrow linewidth lasers, and CW lasers, which are essential for the accelerating AI/cloud data center buildout. Demand significantly outstrips supply, with long-term agreements providing revenue visibility and driving margin expansion.
Strategic Expansion into Next-Gen Interconnects (1.6T, NPO, CPO, OCS): The company is exceptionally well-positioned for the transition to 1.6T transceivers, Near-Packaged Optics (NPO), Co-Packaged Optics (CPO), and Optical Circuit Switches (OCS). These represent higher-value, multi-year growth opportunities crucial for scaling next-generation AI infrastructure, with Lumentum being first to market in some instances and the only merchant OCS supplier.
Increasing Vertical Integration and Manufacturing Scale: Lumentum's strategic investments in expanding its indium phosphide fab capacity (e.g., Greensboro acquisition, Japan fabs, Rose Orchard facility) and its ability to in-source critical laser components enhance its control over the supply chain, improve margins, and enable it to meet surging demand more effectively, securing its long-term growth trajectory.

3 Main Long-Term Bear Details

Persistent and Severe Supply Chain Constraints: Despite aggressive capacity expansion efforts, Lumentum continues to face significant and unanticipated supply constraints across critical product lines, including EMLs (over 30% imbalance), pump lasers (even greater imbalance), and transceivers (due to electrical components). These constraints significantly cap Lumentum's ability to fully capitalize on surging market opportunities and meet customer demand.
High Customer Concentration Risk: A substantial portion of Lumentum's revenue is derived from a few hyperscale customers. While currently beneficial, this concentration makes the company vulnerable to shifts in their capital expenditure cycles, strategic changes (e.g., insourcing), or aggressive pricing demands, which could abruptly impact revenue and margin stability.
Execution Risks in Emerging Technologies and Capacity Ramps: While OCS and CPO offer significant upside, their ramps are still in early stages, and there are inherent execution risks related to software qualification, customer rollout timing, and potential competition. The Greensboro fab, crucial for future CPO revenue, will not come online until 2028, delaying significant contributions from this multi-billion dollar opportunity.

Competitors And Differentiation: Lumentum faces competition from Chinese-based companies entering the market with new indium phosphide fabs, as well as larger competitors in the transceiver space. Lumentum differentiates itself through its strong position in EMLs and its highly differentiated high and mid-power lasers essential for NPO and CPO. In CW lasers, Lumentum commands a price premium due to its ability to deliver consistent performance, which results in superior yields for its customers' transceiver manufacturing. For 1.6T transceivers, Lumentum believes it is first to market in many instances, ahead of larger competitors, leveraging its widely acknowledged Signal Integrity team. In the OCS market, Lumentum considers itself the only merchant supplier today, giving them a first look at many opportunities.
Recent Performance & What The Market'S Focused On: Lumentum reported record Q4 FY26 revenue of $1.01 billion, surging 109% year-over-year, and non-GAAP EPS of $3.23, well above expectations. Non-GAAP gross margin crossed 50% for the first time, and non-GAAP operating margins expanded by over 2,150 basis points year-over-year. The company provided bullish Q1 FY27 guidance, targeting $1.25 billion revenue at the midpoint, representing over 130% year-over-year growth, and non-GAAP operating margin exceeding the high end of its target model. The market is focused on Lumentum's ability to accelerate its laser chip capacity ramp to meet persistently high demand, the successful ramp and margin expansion of 1.6T transceivers, and the progression of OCS and early CPO traction, including ELS modules. Investors are also closely watching hyperscaler AI/datacenter CapEx updates and the company's ability to manage ongoing supply constraints.

Revenue Segments And Estimated Mix: Components — Mix: ~64.5%; Source: Q4 FY26 transcript; Trend: Increased 22% sequentially and 103% year-over-year.
Systems — Mix: ~35.5%; Source: Q4 FY26 transcript; Trend: Increased 30% sequentially and 123% year-over-year.
Product Brands: Super Transport Blade
Vertical-Cavity Surface-Emitting Lasers (VCSELs)
Electro-Absorption Modulated Lasers (EMLs)
Wavelength Selectable Switches (WSS)
Narrow Linewidth Laser Assemblies
CW Lasers
Optical Circuit Switch (OCS)
Co-Packaged Optics (CPO) solutions
External Laser Source (ELS) modules
Near-Packaged Optics (NPO) lasers
ROADMs
Optical Amplifiers
Diode-Pumped Solid-State Lasers
Fiber Lasers
Direct-Diode Lasers
Gas Lasers
800 gig transceivers
1.6T transceivers
Ultrafast lasers

Bull / Bear Details

Lumentum is rapidly solidifying its critical role in AI optical infrastructure, driven by unprecedented demand for high-margin laser chips and accelerating 1.6T

Thesis

Lumentum is rapidly solidifying its critical role in AI optical infrastructure, driven by unprecedented demand for high-margin laser chips and accelerating 1.6T transceiver ramps. Record financial performance, significant margin expansion, and new opportunities in Near-Packaged Optics (NPO) and External Laser Source (ELS) modules underscore strong execution. Despite persistent supply constraints for ultra-high-power lasers, strategic capacity investments position Lumentum for sustained, accelerated growth. (September 9, 2026)

Bull case

Lumentum is demonstrating exceptional financial performance, with Q4 revenue surging 109% year-over-year to $1.01 billion and non-GAAP gross margin crossing 50% ahead of expectations. Q1 FY27 revenue guidance of $1.25 billion (130% Y/Y growth) and operating margins exceeding targets highlight strong execution and leverage, with further margin expansion anticipated.
The company is capitalizing on architectural shifts to Near-Packaged Optics (NPO) and Co-Packaged Optics (CPO), with NPO significantly expanding the optical TAM. Increased demand signals for lead CPO customers, the first ELS module order, and strong NPO momentum with differentiated laser chips position Lumentum for substantial multi-year growth in advanced AI interconnects.
Lumentum maintains a dominant position in high-margin laser components, with pump laser shipments surging over 80% year-over-year and EMLs achieving record quarters. Strategic long-term agreements for pump lasers and expanding indium phosphide fab capacity in Japan for CW and EMLs, alongside the Greensboro fab coming online in 2028, secure future supply for insatiable AI demand.

Bear case

Lumentum continues to face severe supply constraints, particularly for ultra-high-powered lasers, where demand has surged, leaving the company "very much further behind" its ability to supply. EMLs remain behind customer demand, and pockets of supply chain tightness for other components cap overall shipments, hindering Lumentum's ability to fully capitalize on market opportunities.
While OCS and CPO offer significant upside, their ramps still carry execution risks. The OCS ramp, though progressing, was previously supply-chain gated, and while tracking to target, is not ahead. The Greensboro fab, crucial for future CPO revenue, will not contribute significantly until early 2028, delaying the full realization of this multi-billion dollar opportunity.
High customer concentration among a few hyperscalers remains a risk, making Lumentum vulnerable to shifts in their capital expenditure or strategic changes. While Lumentum asserts differentiation against emerging Chinese indium phosphide fab players and maintains market share advantages in 1.6T transceivers, competitive pressures could intensify over time.

Bull / Bear Case

Bear Case: Despite strong demand, Lumentum faces severe and persistent supply constraints, particularly for ultra-high-powered lasers and EMLs, where demand significantly outpaces the company's ability to supply. This limits its capacity to fully capitalize on market opportunities. The ramp of Optical Circuit Switches (OCS) and Co-Packaged Optics (CPO), while promising, carries execution risks, with the crucial Greensboro fab not contributing significantly until early 2028. High customer concentration among a few hyperscalers presents a substantial risk, making Lumentum vulnerable to shifts in their capital expenditure, strategic changes, or aggressive pricing demands. While Lumentum asserts differentiation against emerging Chinese indium phosphide fab players, competitive pressures could intensify, potentially eroding market share and pricing power over time, especially if supply constraints ease for competitors.
Bull Case: Lumentum is a critical enabler of the AI optical infrastructure, demonstrating exceptional financial performance with Q4 FY26 revenue surging 109% year-over-year to $1.01 billion and non-GAAP gross margin exceeding 50% ahead of expectations. The company's Q1 FY27 guidance of $1.25 billion (130% Y/Y growth) and strong operating margins highlight robust execution and leverage. Lumentum is strategically positioned for next-generation interconnects, including 1.6T transceivers, Near-Packaged Optics (NPO), Co-Packaged Optics (CPO), and Optical Circuit Switches (OCS), which significantly expand its addressable market. Demand for high-margin laser components like pump lasers (80%+ Y/Y growth) and EMLs continues to outstrip supply, supported by strategic long-term agreements and aggressive capacity expansion in Japan and the upcoming Greensboro fab. The company's first-to-market advantage in 1.6T transceivers and unique differentiation in laser technology further solidify its competitive edge.
More Compelling & Why: Given the strong growth narrative but also significant, acknowledged supply constraints, the **Bear Case** is more compelling. Assuming an elevated EV/EBITDA multiple of ~35.0x (hypothetical for current market conditions), the valuation appears stretched when the company is 'very much further behind' its ability to supply ultra-high-powered lasers. The strongest argument for the bear case is the persistent and increasing supply-demand imbalance, which directly caps revenue realization despite robust market opportunity. My view would flip to bullish if Lumentum demonstrated a clear and sustained alleviation of these supply constraints, allowing it to fully capture the surging demand.

Key Factors5 rows

Key Factor	Why It Matters	What To Watch	What It Signals	Where/How To Track	Free Alt Data	Paid Alt Data
1.6T Transceiver Uptake and Market Share	The rapid transition to 1.6T transceivers is critical for next-generation AI clusters, offering structurally better margins. Lumentum's claimed first-to-market advantage and ability to maintain market share are key competitive differentiators.	Management commentary on 1.6T transceiver shipment volumes, market share trends, and profitability in Q1 FY27 and through calendar 2027. Updates on 200-gig EMLs as a percentage of total EML revenue.	Bullish: Management confirms intensifying 1.6T uptake with sustained market share leadership and improved margins. 200-gig EMLs become the majority of volume shipments by mid-2027. Bearish: 1.6T ramp slows, market share gains are not evident, or margin improvement is less than expected.	Company earnings calls and press releases (Q1 FY27 earnings expected in November 2026). Industry reports on high-speed transceiver market share.	Lightwave Online articles on 1.6T transceiver deployments and competitive landscape.	LightCounting: Optical Transceiver Market Report (1.6T shipments, market share).
Non-GAAP Gross Margin Expansion	Gross margin is a crucial indicator of Lumentum's product mix, pricing power due to supply scarcity, and manufacturing efficiency, directly impacting overall profitability and operating leverage.	Reported Non-GAAP Gross Margin in Q1 FY27 and subsequent quarters. Management commentary on the specific drivers of margin changes (product mix, pricing, utilization, CW laser contribution).	Bullish: Non-GAAP Gross Margin continues to expand beyond 50.4% in Q1 FY27. Bearish: Non-GAAP Gross Margin declines or stagnates below 50.4% in Q1 FY27.	Company earnings calls and press releases (Q1 FY27 earnings expected in November 2026).	Financial news outlets reporting on Lumentum's earnings.	Bloomberg Terminal/Refinitiv Eikon: Lumentum's historical and consensus gross margin trends.
Indium Phosphide (InP) Capacity Expansion & Substrate Supply	Indium Phosphide is a foundational material for Lumentum's high-speed optical components. Securing substrate supply and successfully expanding fab capacity are critical to meet surging demand and alleviate persistent supply constraints.	Management updates on progress in Japan fab capacity expansion, utilization rates, and any further announcements regarding long-term substrate supply agreements (e.g., with AXTI). Updates on Greensboro fab conversion and first revenue timing.	Bullish: Management reports successful and on-schedule InP capacity expansion in Japan, new long-term substrate agreements, and no new supply constraints. Greensboro fab remains on track for early 2028 revenue. Bearish: Delays in fab expansion, new or worsening substrate supply issues, or changes to Greensboro fab timeline.	Company earnings calls and press releases (Q1 FY27 earnings expected in November 2026). SEC filings (10-Q, 10-K) for capital expenditure details.	Industry news on semiconductor material supply chains (e.g., Compound Semiconductor, Semiconductor Engineering).	Supply chain intelligence platforms (e.g., Supplyframe, S&P Global Market Intelligence) for InP wafer market trends.
OCS Revenue Growth and Supply Chain Management	Optical Circuit Switches (OCS) represent a significant multi-year, multi-billion dollar opportunity. Lumentum's ability to meet revenue targets and manage supply chain constraints is crucial for capitalizing on this growth.	Reported OCS revenue for Q1 FY27 and subsequent quarters. Management commentary on supply chain improvements and progress towards the $400 million target for the second half of calendar 2026.	Bullish: Q1 FY27 OCS revenue is meaningfully above $100 million, and management indicates significant alleviation of supply chain constraints. Bearish: OCS revenue is below $100 million in Q1 FY27, or supply chain issues continue to hinder the $400 million target.	Company earnings calls and press releases (Q1 FY27 earnings expected in November 2026).	Industry analyst reports (e.g., Cignal AI) on OCS market trends and competitive landscape.	Dell'Oro Group: Data Center Optical Switch Market Share.
Ultra-High-Power Laser Shipments for CPO/NPO	This factor directly measures Lumentum's early traction and revenue generation from next-generation AI interconnect solutions (CPO/NPO), which are crucial for future growth and market leadership.	Quarterly revenue contribution from ultra-high-power lasers. Management commentary on External Line Source (ELS) module shipments and customer adoption.	Bullish: Fiscal Q3 2027 revenue from ultra-high-power lasers reaches triple-digits, or calendar year 2026 revenue exceeds $50 million. Bearish: Revenue falls short of targets or ELS module adoption is slower than anticipated.	Company earnings calls and press releases (Q1 FY27 earnings expected in November 2026, Q3 FY27 earnings expected in May 2027).	Google Trends: 'Lumentum ELS module', 'Lumentum CPO laser'. Industry news sites (e.g., Lightwave, FierceTelecom) for CPO/NPO deployment announcements.	LightCounting: CPO/NPO market share and shipment data. Dell'Oro Group: Optical Transceiver Market Report.

Key Reported Metrics, Reratings Triggers & Results3 rows

Pump lasers are critical components for AI data center connectivity. Their strong growth and continued 'sold out' status highlight Lumentum's market leadership

Upcoming print · 2026-11-03

Key reported metrics
Metric	Last period	Why it matters
Pump Laser Shipments YoY Growth	>80%	Pump lasers are critical components for AI data center connectivity. Their strong growth and continued 'sold out' status highlight Lumentum's market leadership and the intense demand for its high-value components.
Non-GAAP Gross Margin	50.4% (+2.5pp sequentially, +12.6pp y/y)	Reflects Lumentum's improving product mix (high-margin components, 1.6T transceivers), successful pricing strategies due to supply scarcity, and enhanced manufacturing utilization, driving overall profitability.
Total Revenue	109%	Indicates Lumentum's ability to capitalize on surging AI/cloud demand and execute on its accelerated growth targets, demonstrating market leadership and operational efficiency.

Last reported · 2026-08-11

Key reported metrics			Rerating thresholds			Earnings results
Metric	Last period	Why it matters	What's needed for rerating	Rerating context	Earnings date	Actual reported	Hit target?	Notes
Non-GAAP Gross Margin	36.08%	Margin indicates improving product mix (more EMLs, 1.6T, scale-across), successful pricing strategies due to supply scarcity, and factory utilization, all crucial for operating leverage and earnings upside.	Lumentum Holdings Inc. (LITE) needs to report a Non-GAAP Gross Margin of 48.9% or higher for Q4 FY26.	Achieving a Non-GAAP Gross Margin above 47.9% would confirm Lumentum's ability to capitalize on strong demand for high-margin components like EMLs and 1.6T transceivers, validate successful pricing strategies due to supply scarcity, and demonstrate improved factory utilization and a richer product mix. This would underscore the company's operating leverage and earnings upside, reinforcing its position as a critical AI optical infrastructure supplier.	2026-08-11	50.4% (+2.5pp sequentially, +12.6pp y/y)	Yes	Lumentum reported a Non-GAAP Gross Margin of 50.4%, which exceeded the rerating target of 48.9%. Management highlighted that crossing the 50% threshold came sooner than expectations, driven by better manufacturing utilization, favorable mix, and increased pricing on select products. This significant margin expansion was a key factor in the company's exceptional performance and the positive market reception.
Systems Revenue Growth	121%	This metric shows Lumentum's success in the transceiver market, particularly the 1.6T ramp, and the progression of OCS, signaling durability of revenue beyond the chip cycle.	Systems Revenue Growth of 125% or higher year-over-year, demonstrating accelerated growth from the prior quarter's 121% and significantly exceeding the overall company's projected revenue growth for Q4 FY26.	This metric is crucial as it directly reflects Lumentum's success in the high-growth AI optical infrastructure market, particularly the ramp of next-generation 1.6T transceivers and the progression of OCS. Outperforming expectations here would validate the company's strategic investments, demonstrate its ability to capitalize on surging AI demand, and signal durable revenue growth beyond the current chip cycle, justifying a higher valuation.	2026-08-11	$357 million (123% y/y growth)	No	Systems revenue grew by 123% year-over-year, which was a strong increase but slightly missed the rerating trigger of 125% or higher. While cloud transceivers and OCS were major drivers of growth, the company noted that pockets of supply chain tightness for certain components capped shipments below total market demand. Despite missing this specific trigger, the overall earnings report was very positive, and the stock reacted favorably.
Components Revenue Growth	77%	This is the core engine and highest-margin business, driven by AI/cloud demand for laser chips and other components. Sustained growth indicates strong market traction and capacity expansion success.	Components Revenue Growth needs to hit 80%+ year-over-year, demonstrating continued acceleration in capturing the 'insatiable demand' for high-margin laser chips and other components, and signaling effective progress in alleviating supply constraints.	Components revenue is Lumentum's core and highest-margin business, directly reflecting its ability to capitalize on surging AI/cloud demand. Exceeding prior growth signals successful capacity expansion and market share gains, validating the investment thesis and driving higher valuations.	2026-08-11	$649 million (103% y/y growth)	Yes	Components revenue significantly exceeded the 80% year-over-year growth target, reaching 103% year-over-year. This was driven by broad-based momentum across scale-out and sell-across product lines, and strong performance in the laser portfolio. The company also secured multiple long-term customer agreements for pump lasers. This strong performance contributed to the positive market reaction, with the stock gaining 14.62% post-earnings.

Key Questions

Will Lumentum's accelerated capacity expansion for laser chips, particularly ultra-high-power lasers for CPO/NPO and EMLs, effectively alleviate the increasing

Will Lumentum's accelerated capacity expansion for laser chips, particularly ultra-high-power lasers for CPO/NPO and EMLs, effectively alleviate the increasing supply-demand imbalance and enable them to fully capitalize on surging AI-driven demand?

Question 2: Can Lumentum sustain its early market share advantage and achieve the anticipated margin expansion from the intensifying 1.6T transceiver ramp, especially as it navigates competitive dynamics and continues to integrate internal CW lasers?
Question 3: Will the emerging opportunities in Near-Packaged Optics (NPO) and the initial External Laser Source (ELS) module orders, alongside the ramp of Optical Circuit Switches (OCS), translate into broader and more substantial revenue contributions beyond current expectations?

Earnings Transcript Summary2 rows

2026-08-11 · 2026Q4 Earnings Call

3 Things Management Is Most Focused On	Call Takeaway & Tone	Prior Quarter'S Y/Y Growth By Segment	3 Things Analysts Most Pressed On (And Mgmt Responses)	Revenue Segments
3 Things Management Is Most Focused On1. Accelerating AI revenue and exceeding financial targets: Management highlighted record revenue of $1.01 billion, up 109% year-over-year, and achieving non-GAAP gross margin above 50% sooner than expected. They also guided Q1 revenue to their $1.25 billion target more than a quarter ahead of schedule, with operating margins exceeding the high end of their target model. 2. Advancing NPO and CPO technologies and market penetration: Management is focused on the architectural shifts to Near-Packaged Optics (NPO) and Co-Packaged Optics (CPO), viewing NPO as an additive opportunity that significantly increases the optical Total Addressable Market (TAM). They noted strong NPO momentum with differentiated laser chips and confirmed that their lead CPO customer's production plans remain on track, with demand signals increasing. They also mentioned receiving their first External Line Source (ELS) module purchase. 3. Expanding manufacturing capacity for key components: Management is actively working to increase capacity for pump lasers, expecting a fourfold increase in shipments over the next several quarters, and expanding capacity across their two indium phosphide wafer fabs in Japan for CW and EML process flows. They also discussed the smooth progression of OCS internal manufacturing expansion and initial work to add capacity with contract manufacturers.	Call Takeaway & ToneThe call conveyed a highly confident and optimistic tone. Lumentum reported exceptional Q4 FY26 results, significantly exceeding expectations for revenue and profitability, driven by strong demand for its optical components and systems in AI and cloud markets. Management expressed strong confidence in their continued ability to capitalize on the AI secular shift, accelerate revenue growth, and expand margins, particularly through advancements in NPO, CPO, and OCS. Despite persistent and even increasing supply constraints for certain high-powered lasers, the company is aggressively expanding capacity and securing long-term agreements, signaling a robust outlook for future growth.	Prior Quarter'S Y/Y Growth By SegmentIn Q3 Fiscal Year 2026, Components revenue grew 77% year-over-year. Systems revenue increased 121% year-over-year.	3 Things Analysts Most Pressed On (And Mgmt Responses)1. Future financial targets and new opportunities (NPO, ELS, OCS): Analysts questioned how to think about the next set of financial targets given the stronger demand and favorable mix, including incremental opportunities from ELS, NPO, and OCS. Management responded that they would release new financial targets, likely at the next OFC, as they are running well ahead on revenue, gross margin, and operating margin. They noted that NPO, CW lasers, and OCS are incremental opportunities not fully factored into previous discussions. 2. NPO details, timing, and content opportunities: Analysts sought further details on NPO timing, preferred customer architectures, and content relative to CPO. Management stated that the timing for NPO opportunities is similar to their lead CPO customer (shipping in H2 calendar '27 for '28 deployments), with initial opportunities leaning towards high-powered ELS type lasers. They highlighted Lumentum's differentiated mid-power laser technology, leveraging their ultra-high power platform for efficiency in small optical engines. 3. Supply/demand imbalance and capacity expansion for lasers (pump, EML, CW) and OCS: Analysts inquired about the current supply/demand imbalance and how it's improving. Management indicated no change in the EML imbalance, still shipping behind demand. They noted a significant increase in demand for ultra-high-powered lasers, making them “very much further behind” their ability to supply, despite execution being on track. For OCS, they are tracking to the $400 million guide but not ahead, having navigated earlier supply chain problems. They also discussed securing additional indium phosphide substrate supply due to the surge in ultra-high-powered laser demand.	Revenue SegmentsComponents revenue for the fourth quarter was $649 million, reflecting 103% year-over-year growth. Systems fourth quarter revenue reached $357 million, representing a 123% year-over-year increase.

2026-05-05 · 2026Q3 Earnings Call

3 Things Management Is Most Focused On	Call Takeaway & Tone	Prior Quarter'S Y/Y Growth By Segment	3 Things Analysts Most Pressed On (And Mgmt Responses)	Revenue Segments
3 Things Management Is Most Focused On1. Driving revenue growth and margin expansion: Management highlighted record revenue of $808 million (90% y/y growth) and significant non-GAAP operating margin expansion of over 2,100 basis points year-over-year, fueled by a rich product mix (especially scale-out and scale-across portfolios) and strong operating leverage. They expect continued margin improvement. 2. Increasing supply and capacity to meet surging demand: Management is actively working to ramp capacity for EMLs (expecting 50% growth in units by December 2026 vs. December 2025), pump lasers (planning significant step-ups over the next four quarters), and OCS, as demand continues to outstrip supply across these critical components. 3. Strategic vertical integration and future growth drivers: Lumentum is focused on in-sourcing CW lasers for transceivers (aiming for 20% of modules in Q4 FY26), developing ELS modules for CPO applications, and leveraging the newly acquired Greensboro indium phosphide fab for years of future growth, particularly for the multi-billion dollar CPO opportunity, which is expected to come online in 2028.	Call Takeaway & ToneThe overall takeaway of the call is highly positive, with a confident tone from management. Lumentum delivered exceptional financial results, driven by strong year-over-year revenue growth and impressive margin expansion, primarily fueled by demand for its components and systems in AI and cloud markets. Management expressed confidence in their ability to continue expanding margins and capitalize on significant future growth drivers like OCS and CPO, despite persistent supply constraints across key product lines. The company is actively investing in capacity and vertical integration to address demand and improve profitability, indicating a strong outlook for continued growth.	Prior Quarter'S Y/Y Growth By SegmentIn Q2 Fiscal Year 2026 (ended December 27, 2025), Components revenue grew 68.3% year-on-year, and Systems revenue grew 60.1% year-on-year.	3 Things Analysts Most Pressed On (And Mgmt Responses)1. Supply-demand imbalance and capacity ramp for lasers (EMLs, pump lasers) and OCS: Analysts repeatedly questioned the extent of the supply-demand gap and Lumentum's ability to ramp production. Management responded that they are still chasing demand, with the EML supply-demand imbalance greater than 30% and pump laser constraints being even more significant and unanticipated. They are actively ramping capacity for both and are on a 'tight rope' with OCS supply, but believe they have it under control for future targets. 2. Gross margin expansion and its drivers: Analysts inquired about the factors contributing to the significant margin improvement. Management attributed this to a combination of better factory absorption/utilization, a richer product mix (prioritizing margin-beneficial products and the scale-across portfolio), and pricing flexibility due to the strong supply-demand imbalance. They also noted that 1.6T transceivers offer structurally better margins. 3. OCS and CPO market opportunities and execution: Analysts pressed on the progress of OCS customer engagements, potential new wins, and the long-term CPO scale-up opportunity, including vertical integration. Management confirmed ongoing work with multiple OCS customers, progress on substantial new wins, and the significant opportunity in CPO, particularly with ELS modules, which they see as a more convincing and shorter path to market than just supplying lasers. They also clarified that the Greensboro fab, while significant for CPO, will not contribute meaningfully until 2028.	Revenue SegmentsComponents revenue grew 77% year-over-year. Systems revenue increased 121% year-over-year.

Transcript Tidbits2 rows

2026-08-11

About Expanding Eligible Market	About Competition	About The Broader Industry	Where Things Are Headed	Updates On Theme	Bullish-Leaning Quotes (Short)	Bearish-Leaning Quotes (Short)
About Expanding Eligible MarketLumentum's near-packaged optics (NPO) opportunity is completely additive, significantly increasing the optical total addressable market (TAM), with even their largest co-packaged optics (CPO) customer exploring NPO for new use cases. The company is expanding its laser chip strategy to capture broader market opportunities, including a new CW laser chip for 200 gig per lane applications. They also have visibility to an expanding set of 3D sensing applications expected to drive growth in upcoming product cycles with their primary customer. For optical circuit switches (OCS), Lumentum is planning higher and lower port count products, including specialized in-tray offerings, which are additive to the current TAM and represent a very new set of opportunities expected to hit in the 2028 timeframe. Additionally, the emergence of OCI (Optical Compute Interconnect) and other standards-based approaches for the interface between ASICs and optical engines is seen as beneficial, opening up new switch opportunities and expanding the optical TAM.	About CompetitionLumentum believes its differentiated technology commands premium value. The company appears to be first to market in many 1.6T transceiver instances, ahead of larger competitors, which should allow them to maintain a market share advantage through the cycle. Their Signal Integrity team is recognized as the best in a competitive field, which is crucial for the difficulty of 1.6T designs. Regarding Chinese-based companies entering the indium phosphide fab market, Lumentum has not seen any impact on its numbers and does not expect to, citing strong differentiation in EMLs, high and mid-power lasers for NPO/CPO, and CW lasers where they command a significant price premium due to superior yields for customers. Lumentum asserts that it is the only merchant supplier of OCS today, giving them a first look at new opportunities.	About The Broader IndustryThe industry is experiencing a secular shift where data center architects are increasingly turning to optical links as the primary means of connectivity due to the rising speed and bandwidth demands of AI compute workloads. Architectural shifts towards near-packaged (NPO) and co-packaged optics (CPO) represent a major market inflection, benefiting Lumentum as optics penetrate the copper domain. Expanding inferencing and training applications are driving full-rate connectivity between data centers, while political and regulatory constraints favor smaller, more modular builds, substantially increasing demand for pump laser solutions. For one major hyperscaler, the network capacity connecting just two AI data center sites could double the total global backbone capacity built over the entirety of the last decade. The industry is seeing an inflection in ASIC and SerDes speeds, which is driving the need for NPO and CPO. New generations of silicon (GPUs, XPUs, TPUs) coming online in mid-to-late 2027 and early 2028 are expected to feature SerDes speeds consistent with NPO or CPO adoption, indicating a broad industry momentum towards optical scale-up in the 2028 timeframe. In a constrained supply environment, customers will use any available laser source to support their build-out.	Where Things Are HeadedLumentum expects gross margin expansion to continue, driven by product mix and tight operational execution. The company's Q1 revenue guidance reaches its $1.25 billion target more than one quarter ahead of schedule, with Q1 non-GAAP operating margin guidance exceeding the high end of its target model. Lead CPO customers' production plans remain on track, and demand signals have increased, with a demand ramp for ultra high-power laser chips expected in the second half of calendar 2027, ahead of customer scale-up deployments in calendar 2028. Lumentum has also received its first external line source (ELS) module purchase for delivery by the second half of calendar 2027. The rest of their customer base is prioritizing near-packaged architectures as an intermediate step to eventual CPO adoption, which is still viewed as the natural end state on the technology roadmap. Demand for both EML and CW lasers is expected to grow significantly through the second half of calendar 2026 and into 2027. The uptake of 1.6T transceivers is anticipated to intensify starting in fiscal Q1 and sustain through calendar 2027. Lumentum expects to set another quarterly revenue record in Q1. New financial targets will likely be announced at the next OFC. For ultra-high-powered lasers, the company expects to reach approximately $50 million by the end of the calendar year, with the first triple-digit quarter anticipated in fiscal Q3. The Greensboro fab is on schedule for first revenue in early 2028, ramping through calendar 2028 into full production by the end of 2028 and into 2029. Lumentum expects to become the number one OCS supplier with momentum by early 2027. They project 200 gig EMLs to be the majority volume shipments by mid-2027. The non-GAAP operating margin target of 42% is now seen as a midpoint, with the range potentially moving up 100 to 200 basis points. The company anticipates new arrangements for Greensboro capacity over the next couple of quarters.	Updates On ThemeLight	Bullish-Leaning Quotes (Short)Revenue surged 109% year-over-year to $1.01 billion, marking our eighth consecutive quarter of top line growth. Non-GAAP gross margin crossed 50%. Our differentiated technology commands premium value and our operating model delivers outsized leverage. The midpoint of our Q1 revenue guidance reaches our $1.25 billion target more than 1 quarter ahead of schedule. Our lead CPO customers' production plans remain very much on track and their demand signal has increased. The NPO opportunity is completely additive for us, significantly increasing optical TAM. We're seeing strong NPO momentum across multiple high-velocity engagements. We have a distinctive ability to deliver at scale to a very tight set of specifications. We appear to be first to market in many instances ahead of larger competitors. Our guidance includes our first triple-digit OCS revenue quarter. The demand signal for 2027 continues to be incredibly strong. We are definitely tracking to the $400 million. We are able to command a nice price premium. We've got our first ELS module order right? Which from an ASP standpoint is meaningfully higher. No slowdown in our EML demand. We've closed the margin gap quite considerably. Lasers are one of our better businesses. Operating margin... moving up 100 to 200 basis points. Pump laser shipments surged more than 80% year-over-year. Somewhere between 70%, 80% share.	Bearish-Leaning Quotes (Short)While pockets of supply chain tightness for certain components capped shipments below total market demand. We will remain effectively sold out for the foreseeable future despite our rapid capacity expansion. We are way behind. Our shipments, unfortunately, on high-powered lasers. The demand signals increased and we are very much further behind relative to our ability to supply. I would not say tracking ahead [on OCS $400M target]. We're still shipping behind customer demand on EML. If this vector continues, we're probably going to need to look for more help on substrate.

2026-05-05

About Expanding Eligible Market	About Competition	About The Broader Industry	Where Things Are Headed	Updates On Theme	Bullish-Leaning Quotes (Short)	Bearish-Leaning Quotes (Short)	Hiring
About Expanding Eligible MarketLumentum sees a significant opportunity in 'scale-across' networks, where hyperscalers are shifting to distributed architectures linking compute domains across disparate geographies, requiring high-bandwidth synchronization. The company provides critical hardware components like pump lasers, narrow linewidth laser assemblies for 1.6T speeds, and Wavelength Selectable Switches (WSS) to manage traffic in the optical domain. The emerging multi-rail technology is expected to be vital for increased parallelism and massive fiber counts in these networks, with the multi-rail opportunity potentially being 'even bigger' than currently quantified. The acquisition of a fifth indium phosphide fab in Greensboro, North Carolina, provides capacity for 'years of future growth' and is expected to enable over $5 billion of incremental revenue from the Co-Packaged Optics (CPO) horizon when it comes online in 2028. The company is also seeing 'substantial' new opportunities for optical switches, putting tension on its roadmap. Additionally, engagement with non-primary customers for CPO is largely driven by ELS (External Laser Source) modules, which represents a 'very significant opportunity' for vertical integration and is 'just around the corner' for significant wins.	About CompetitionLumentum believes its position in the OCS (Optical Circuit Switch) market is 'very, very strong' and that it's 'hard for me to imagine anybody is going to be able to ship one of these very innovative solutions' in the next year, despite Chinese competitors showcasing OCS boxes. The company is actively working on cost reduction and innovative OCS solutions to maintain its leading position with MEMS technology. Regarding lasers, Lumentum perceives the risk of oversupply as 'low,' noting that customers are actively discussing extending long-term agreements, which would not be the case if an oversupply was anticipated. The company acknowledges that 'everybody is trying to add supply,' but 'the reality on the ground now seems to be quite a bit different,' indicating continued pricing flexibility due to supply-demand imbalance.	About The Broader IndustryThe broader industry is characterized by hyperscalers exhausting power and space limits in individual data centers, leading to a shift towards distributed architectures that require high-bandwidth synchronization across multiple data centers. There is an 'unanticipated' and significant supply-demand imbalance for pump lasers, which is 'certainly greater than that 30% number' seen in EMLs, forcing Lumentum to make choices on allocation. Google is identified as a major customer 'driving a lot of demand' for Lumentum's business. The optical transceiver market for AI clusters is projected to exceed $10 billion in 2026, roughly doubling from 2024, fueled by significant capital expenditures from hyperscalers for next-generation AI infrastructure. The accelerating AI supercycle is driving 'unprecedented capital expenditure in data centers,' leading to 'insatiable demand for 800G and 1.6T optical and copper interconnects,' with demand expected to 'outstrip production capacity for years'.	Where Things Are HeadedLumentum expects its 'scale-across' business to grow appreciably, with profitability improving due to supply-demand imbalance. The company is on track for over 50% growth in EML units by December 2026 compared to December 2025. Ultra-high-power laser chip manufacturing for CPO applications is on schedule to deliver meaningful revenue in the December quarter and fulfill a multi-hundred million dollar purchase order in the first half of calendar year 2027. Lumentum is poised to ramp 1.6T-speed transceiver shipments in fiscal Q4, with about 20% of modules leveraging its internal CW lasers. The company anticipates setting another quarterly revenue record in Q4 fiscal year 2026, with over half of the sequential growth from components and the remainder from high-speed transceivers and OCS. Lumentum remains 'very much on track' to reach its $2 billion quarterly revenue goal articulated at OFC. Larger contributions from OCS are expected in the back half of the year, and scale-out CPO in the fourth calendar quarter, though scale-up CPO is still in its infancy. The Greensboro fab is projected to come online in 2028, adding significant incremental revenue.	Updates On ThemeLight	Bullish-Leaning Quotes (Short)Lumentum delivered an exceptional third quarter with revenue growing 90% year-over-year to a record $808 million. Our non-GAAP operating margin was more so, expanding by over 2,100 basis points year-over-year, fueled by a rich product mix and strong operating leverage. We are on track to achieve more than 50% growth in EML units by the December quarter of 2026 as compared to the December quarter of 2025. In mid-March, we announced our acquisition of a fifth indium phosphide fab in Greensboro, North Carolina, which provides the capacity needed for years of future growth. We expect to set another quarterly revenue record. This gives us confidence that we are very much on track to reach our $2 billion quarterly revenue goal as we articulated at our OFC event. We appear to be ahead on 1.6T. We seem to be executing relatively well. I think it would drive significant upside for us just given the expansion of our business as they look at v8. I mean I feel it's low. We are engaging all sorts of transceiver customers right now... the discussion is very much around extending the long-term agreements that we already have. I think relative to competition, we feel pretty good about our position. We really do. I think we feel like we're in a very, very strong position. 1.6T is definitely better. Structurally from a margin standpoint is definitely better than 800-gig.	Bearish-Leaning Quotes (Short)These components remain effectively sold out for the foreseeable future, and we are actively working to secure long-term agreements that will help offset anticipated capital expenditures. Our wafer fab capacity in Japan remains at a premium and is fully allocated to meet surging customer demand. Despite these gains, supply constraints on critical components keep our shipments well below customer demand. Our OCS ramp is largely on track, although our pace and slope are gated by the supply chain. We are experiencing considerable tightness in this product area due largely to the significant step-up in requested output. The number of new opportunities we are seeing for optical switches is putting tension on our road map, and we are having to make choices across the company in order to service them. We are still chasing behind relative to demand. The supply-demand imbalance is probably even higher than we reported in our last call, somewhere greater than 30%. We still seem to be behind significantly. We had conversations today with customers, significant customers looking to really up their demand and get output from us, and we simply can't service that. The constraints on lasers pumps are probably the biggest that we are -- it's somewhat unanticipated... it's certainly greater than that 30% number. We are significantly undershipping demand. Our constraint is going to be on transceivers. So we are -- we could ship quite a bit more in the guide, actually quite a bit more this quarter in the quarter we just completed, certainly quite a bit more in the guide have we not the supply constraints that we see. The biggest single tight rope that we're watching probably is OCS. The Greensboro fab is not going to come online until 2028. So we sort of set expectation that sort of in the early 2028 line start to be adding that incremental revenue. So we're still 6 or so quarters away from seeing significant contribution from Greensboro.	HiringLumentum highlighted its commitment to U.S. manufacturing and the 'significant job creation' expected in North Carolina with the acquisition of its fifth indium phosphide fab in Greensboro. The company has already onboarded the plant's team.

Notes3 rows

Date	Comment	Comment Type	Comment Sentiment	Price Reaction
2025-11-04	Lumentum posted record Q1 with revenue +58% Y/Y and margins nearing 40%, driven by surging AI/cloud demand for laser chips and datacenter optics. Components led growth, while systems set up for a stronger ramp as 800G and future 1.6T transceivers scale. Management guided above $600M next quarter and highlighted growing confidence in OCS/CPO, fueling a strong stock reaction.	Earnings Transcript	Bullish	+27.47% (vs SPY: +28.10%)
2025-08-12	Beat on revenue/margins with strong AI optics demand; OCS/CPO ramp highlighted; guidance solid. Stock spiked then reversed as investors questioned sustainability, capacity limits, and concentration in few hyperscaler customers. Over the next quarter, the stock trades on hyperscaler optics orders, margin trajectory, and execution on capacity. The big risk is that it's already priced as an AI optics winner, so any stumble (customer pause, supply hiccup, softer guidance) could outweigh strong fundamentals in the near term.	Earnings Transcript	Mixed	-3.18% (vs SPY: -3.30%)
2026-08-11	Lumentum reported record Q4 FY26 revenue of $1.01 billion and strong EPS, exceeding estimates, driven by surging AI optical demand. Non-GAAP gross margin surpassed 50% for the first time. Bullish Q1 FY27 guidance, targeting $1.25 billion revenue, was ahead of schedule despite persistent supply constraints for high-powered lasers. The market reacted very positively, with the stock gaining 14.62% (vs. SPY +0.75%) post-earnings, reflecting confidence in its AI infrastructure role.	Earnings Transcript	Mixed	+14.62% (vs SPY: +13.87%)

Upcoming Events4 rows

Catalyst ID	Estimated Timing	Estimated Date Start	Estimated Date End	Catalyst	Why It Matters	Ticker Or Theme Specific	Transcript Date	Source Type
LITE_7743904f	sometime in early '27 that we cross over and be the #1 supplier and actually have momentum from there in terms of our OCS shipments.	2027-01-01	2027-03-31	Lumentum to become the #1 supplier of Optical Circuit Switches (OCS).	Achieving market leadership in OCS signifies strong execution and competitive advantage in a high-growth, strategic product area, driving increased revenue and market share for Lumentum.	Ticker	2026-08-11	earnings_transcript
LITE_8cbb5e02	We'll come out with some new financial targets, probably at the next OFC.	2027-03-01	2027-03-31	Lumentum to release new financial targets.	The release of new financial targets would reflect Lumentum's updated outlook on stronger demand and improved margins, potentially leading to a re-rating of the stock.	Ticker	2026-08-11	earnings_transcript
LITE_704d1f6d	the third quarter is when you'd see the first triple digit quarter for ultra-high powered lasers.	2027-01-01	2027-03-31	Lumentum to achieve its first triple-digit revenue quarter for ultra-high-powered lasers.	This milestone indicates a significant ramp-up in demand and shipments for critical components in AI infrastructure, driving substantial revenue growth for Lumentum.	Ticker	2026-08-11	earnings_transcript
LITE_10285475	by the December quarter of 2026	2026-10-01	2026-12-31	Lumentum is on track to achieve more than 50% growth in EML units compared to the December quarter of 2025.	This indicates strong execution in a high-demand, high-margin product area, addressing supply-demand imbalance and driving overall revenue and profitability.	Ticker	2026-05-05	earnings_transcript