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Marvell agrees to buy Lumentum for $115 billion in all-stock deal to combine AI chips and optical lasers
Marvell will acquire laser maker Lumentum for about $115 billion including debt, paying 4.5 Marvell shares per Lumentum share. The deal combines Marvell's custom AI chips and optical DSPs with Lumentum's scarce lasers to challenge Broadcom in data-center interconnects.
From the WSJ · Technology article of November 2, 2026 and cited sources: Lumentum holders receive 4.5 Marvell shares per share, about $1,132 and a 23.9% premium. [2] [8]
SOURCES[2] MarketScreener/Reuters marketscreener.com[8] Let's Data Science letsdatascience.com
AT Pulse research deskPublished · Updated · 4 min read · AI-assisted analysisAI-assisted, not human-edited. Methodology Corrections Who owns this site
- What happened
- Lumentum holders receive 4.5 Marvell shares per share, about $1,132 and a 23.9% premium. [2] [8]
- Original source
- WSJ · Technology article, independent perspective
- Brief by
- AT Pulse research desk AI-assisted; publisher and contact on the desk page
- When
- November 2, 2026 article published
- Covered
- Nov 2 edition
- Evidence
- 12 sources across 12 sites
Reach: not measured yet
Lumentum holders receive 4.5 Marvell shares per share, about $1,132 and a 23.9% premium. That puts equity value near $102.5 billion. Marvell holders would own about 67% of the combined company. With roughly $3.92 billion in cash, Marvell could not easily pay in cash, which helps explain the all-stock structure. [2] [8]
The deal pairs Marvell's optical signal processors and custom accelerators with Lumentum's transmit lasers, pump lasers and optical circuit switches. BNP Paribas estimates DSPs and lasers make up about 75% of a standard PAM4 transceiver's bill of materials. It also notes Broadcom is currently the only supplier combining compute and switch chips with its own lasers. Stifel highlights the potential for co-design across AI network fabrics. [9] [4] [10]
Deal terms and the Broadcom comparison are reported facts.
Read the full assessment
The likely result is that AI infrastructure buyers would gain a second vertically integrated supplier of optics and silicon alongside Broadcom, while rival transceiver makers could face tighter access to lasers.
Executive brief
Marvell will pay for Lumentum entirely in its own shares, valuing the laser maker at about $115 billion including debt. That makes it one of the largest semiconductor deals on record, and Marvell's own stock had fallen sharply since the talks became public (MarketScreener/Reuters; Bloomberg). The deal joins Marvell's custom chips and optical signal processors with Lumentum's lasers, which are in short supply. The aim is to compete with Broadcom on the links that connect AI data-center hardware. The companies expect to close in the first half of 2028, after approvals that include China's (Investing.com).
What changed and event timeline
Joint optical demo
At the OFC 2025 conference, Lumentum and Marvell demonstrated a 450G optical interface. It paired Marvell's 400G-per-lane PAM4 technology with Lumentum's indium-phosphide DFB-MZI transmitter, an early sign of the companies designing products together ().
Nvidia invests in Marvell
A separate $2 billion went to Marvell for custom accelerators that work with Nvidia's NVLink Fusion and for joint work on silicon photonics ().
Nvidia invests in Lumentum
Nvidia invested $2 billion in Lumentum, made a multibillion-dollar purchase commitment and secured rights to future laser capacity. The money also funds a new U.S. fab ().
Talks leak
Bloomberg reported advanced talks. At the time Lumentum was worth about $83 billion and Marvell about $221 billion. Marvell shares fell after hours and Lumentum shares rose ().
Analysts split
Marvell fell more than 11% in intraday trading. BNP Paribas noted that Broadcom is currently the only supplier that combines compute and switch chips with its own lasers ().
Deal announced
Lumentum holders get 4.5 Marvell shares per share, about $1,132, a 23.9% premium. Both boards approved unanimously ().
Capabilities and access
This is a corporate deal, not a product launch. The combined company would sell: Until the deal closes, the two companies' products remain separate. No combined roadmap or product with a version number has been announced.
Read the full section
This is a corporate deal, not a product launch. The combined company would sell:
- Marvell: optical digital signal processors (DSPs) and custom AI accelerators (XPUs) (TradingView/Benzinga).
- Lumentum: lasers for transmitting data, pump lasers and optical circuit switches. Pump lasers and switches were named as Lumentum's main recent growth drivers (Investing.com).
Until the deal closes, the two companies' products remain separate. No combined roadmap or product with a version number has been announced.
Technical analysis for researchers and developers
No benchmarks of the combined products have been published.
Read the full section
- Share of transceiver cost: BNP Paribas estimates that DSPs and lasers together make up about 75% of the bill of materials of a standard PAM4 optical transceiver (TradingView/Benzinga).
- Co-design: Stifel says owning both the silicon and the optics allows "extreme codesign" across AI network fabrics, including integrated optics for scale-up links (Investing.com).
- Laser technology: indium-phosphide DFB-MZI transmitters are an alternative to silicon photonics. The performance claims for them come from the companies themselves (Business Wire).
No benchmarks of the combined products have been published.
Claims and evidence
- Terms: $115 billion enterprise value, $102.54 billion equity value, and a 67/33 ownership split between Marvell and Lumentum holders (MarketScreener/Reuters).
- Cost savings and earnings (company projections): more than $1 billion a year in cost savings and higher non-GAAP earnings per share in the first year after closing (Investing.com).
- Market size (company projection): a combined addressable market of $550 billion.
Read the full section
- Terms: $115 billion enterprise value, $102.54 billion equity value, and a 67/33 ownership split between Marvell and Lumentum holders (MarketScreener/Reuters).
- Cost savings and earnings (company projections): more than $1 billion a year in cost savings and higher non-GAAP earnings per share in the first year after closing (Investing.com).
- Market size (company projection): a combined addressable market of $550 billion. Reports describe Marvell's interconnect figures inconsistently: one gives about $37.5 billion of interconnect revenue in fiscal 2031 (MarketScreener), another a $65 billion interconnect market by 2030 (Global Banking & Finance).
- Supply: Lumentum's capacity is reported as effectively sold out through early 2029 (Let's Data Science).
Context and prior work
- Marvell has a deal with Google worth up to $120 billion in sales through fiscal 2033, plus an option for Google to buy a $12.2 billion stake. Broadcom remains Google's main custom-chip partner (MarketScreener/Reuters).
- Nvidia also invested $2 billion in Coherent, Lumentum's main rival in optics (Mammoth Times/MarketMinute).
Read the full section
- Marvell has a deal with Google worth up to $120 billion in sales through fiscal 2033, plus an option for Google to buy a $12.2 billion stake. Broadcom remains Google's main custom-chip partner (MarketScreener/Reuters).
- Nvidia also invested $2 billion in Coherent, Lumentum's main rival in optics (Mammoth Times/MarketMinute).
Limitations, safety and contested findings
- Regulatory risk: the deal needs U.S. and Chinese approval and is not expected to close before the first half of 2028 (Investing.com).
- Earnings impact is disputed. The source for this figure was not directly confirmed.
- Financing: Bernstein pointed out that Marvell held only about $3.92 billion in cash, which helps explain the all-stock structure (Let's Data Science).
Read the full section
- Regulatory risk: the deal needs U.S. and Chinese approval and is not expected to close before the first half of 2028 (Investing.com).
- Earnings impact is disputed. The companies project accretion. Before terms were final, Raymond James said the deal could range from earnings-neutral by 2028 to more than 10% dilutive, depending on structure (search-indexed summary of coverage). The source for this figure was not directly confirmed.
- Financing: Bernstein pointed out that Marvell held only about $3.92 billion in cash, which helps explain the all-stock structure (Let's Data Science).
Business and practitioner implications
- Supply chain: Marvell already buys lasers from Lumentum. Owning that supply could tighten access for rival transceiver makers (Let's Data Science).
- Domestic sourcing: Stifel argues the deal creates a large U.S. transceiver supplier, which matters if Chinese optical modules face restrictions (Investing.com).
- Buyers: AI infrastructure buyers would get a second vertically integrated supplier besides Broadcom. That could change how they negotiate prices for co-packaged optics.
Read the full section
- Supply chain: Marvell already buys lasers from Lumentum. Owning that supply could tighten access for rival transceiver makers (Let's Data Science).
- Domestic sourcing: Stifel argues the deal creates a large U.S. transceiver supplier, which matters if Chinese optical modules face restrictions (Investing.com).
- Buyers: AI infrastructure buyers would get a second vertically integrated supplier besides Broadcom. That could change how they negotiate prices for co-packaged optics.
The source trail.
Sources (12)
Marvell to Buy Lumentum for $115 Billion in All-Stock AI Deal
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wsj.com