Marvell’s Reported $83 Billion Lumentum Deal Shakes Shares

By Grace Kim

Marvell Technology is in advanced talks to acquire Lumentum in an all-stock deal, according to multiple outlets, against a target market capitalization of roughly $83 billion. Marvell could announce a transaction as soon as next week, though no agreement has been confirmed. Marvell shares fell about 13% after the report, their largest one-day decline in more than four months.

What is worrying investors?

At $83 billion, Lumentum equals about 43% of Marvell’s $191 billion market capitalization. An all-stock transaction would therefore imply substantial shareholder dilution. Lumentum shares rose around 150% in 2026 and 330% over the past 52 weeks, making a control premium more likely.

The report gave no final exchange ratio or purchase premium. The final cost could therefore exceed $83 billion.

What would Marvell gain from Lumentum?

Optical networking links data center components through fiber-optic cables rather than copper. The technology moves large data volumes at high speeds over long distances. As AI pods and clusters expand, copper’s physical limits make optical solutions increasingly necessary.

Marvell says optical interconnects account for "around half" of its data center revenue. Custom silicon accounts for "approximately 25%." Its optical portfolio places significant emphasis on digital signal processors.

Counterpoint Research says Marvell does not supply indium phosphide, or InP, lasers. It buys them from Lumentum. InP lasers are critical to optical products, including co-packaged optics, or CPO.

Owning Lumentum would give Marvell direct control over a critical input and a larger role in CPO. The deal could combine Marvell’s DSPs, custom accelerators and networking products with Lumentum’s laser supply.

How constrained is indium phosphide laser supply?

Counterpoint says Lumentum and Coherent together own most InP laser production capacity. New fabs take years to build. At Citi’s 2026 Global TMT Conference, Lumentum said it "does not expect this gap to close for several years," referring to laser supply and demand.

The acquisition would let Marvell control Lumentum’s InP fabs and scale optical networking during the constrained period. It would also internalize a key component that Marvell currently buys outside.

How large could the optical opportunity become?

Lumentum estimates the optical AI total addressable market will grow from $18 billion in 2025 to more than $90 billion in 2030. Goldman Sachs gives a high-end scenario in which CPO rises from $1 billion in 2026 to nearly $71 billion in 2028.

These figures are company and analyst forecasts, not confirmed revenue or committed capacity. The acquisition would combine ownership of existing production assets with exposure to forecast optical growth.

What does NVIDIA change?

Both companies are NVIDIA partners. In March, NVIDIA invested $2 billion in Lumentum under an agreement that secures advanced laser component supply and supports construction of a new InP fab. Around the same time, NVIDIA invested another $2 billion in Marvell and announced a strategic partnership.

Marvell belongs to NVIDIA’s NVLink ecosystem. Customers there combine Marvell custom accelerators and compatible networking solutions with NVIDIA chips.

The Lumentum deal could deepen the NVIDIA relationship. It could bring Marvell the financial benefit of Lumentum’s NVIDIA supply agreement, increase demand for Marvell optical products and support cross-selling of custom chips.

How large is the financial risk?

Lumentum generated adjusted operating income of just $536.2 million over the last 12 months. Revenue rose 109% in the last quarter, showing strong momentum in optical networking demand. The proposed scale would require substantial earnings improvement to justify the valuation.

If the transaction closes, accretion to long-term earnings growth becomes central. Capacity control can support supply, but the acquisition premium and shareholder dilution must translate into profits.

What do the market indicators show?

• MarketBeat listed Marvell at $141.20, with a 46.60 P/E ratio, a 0.17% dividend yield and a $300.85 consensus target. Its rating was Moderate Buy, and its 52-week range was $70.68 to $329.88.
• Lumentum traded at $538.59 in the same snapshot. MarketBeat rated it Moderate Buy and listed a $1,081.61 consensus target, with no dividend yield or P/E ratio listed.
• NVIDIA traded at $186.64, carried a 23.60 P/E ratio and a 0.54% dividend yield, and held a Buy rating with a $318.85 consensus target.
• MarketBeat did not include Marvell in its five-stock list for investors to own by December 1.

The next test is whether Marvell can turn constrained InP capacity into durable earnings without excessive dilution. The supply gap, final exchange ratio and acquisition premium should determine whether the combination gains ground in AI networking.