The Marvell Lumentum deal announced on Monday is one of the biggest technology transactions of 2026, a $115 billion all-stock agreement that bets the future of artificial intelligence will be decided not just by chips, but by how fast data can move between them using light.
Marvell Technology and Lumentum said they had entered into a definitive agreement under which Marvell will acquire Lumentum, the optical components maker based in San Jose, California. Under the terms, Lumentum shareholders will receive a fixed exchange ratio of 4.500 Marvell shares for each Lumentum share they own.
The companies put the implied enterprise value of Lumentum at about $115 billion, representing approximately $1,132 per Lumentum share, a premium of about 23.9 percent based on each company’s unaffected closing share price as of October 28, the last trading day before market speculation about a potential deal began. The equity value of the deal is about $102.54 billion, according to Reuters calculations.
What Marvell and Lumentum actually do
Marvell, based in Santa Clara, California, designs custom chips, network switching products, and electrical interconnect technology used in data centers, telecommunications networks, and enterprise systems. It has grown rapidly as a supplier to the artificial intelligence boom, building custom processors and networking gear for the largest cloud and AI companies.
Lumentum makes lasers, optical transceivers, optical circuit switching equipment, and specialised compound semiconductor products. Its components convert electrical signals into light and back again, allowing data to travel at high speed through fibre-optic connections inside and between data centers.
As AI models grow larger, the amount of data moving between thousands of processors inside a single data center has exploded. Companies say that moving that data electrically is becoming slower, hotter, and more power-hungry, while optical connections can carry more data with less energy. That shift, from copper to light, is at the heart of the Marvell Lumentum deal.
The terms of the Marvell Lumentum deal
- Structure: All-stock acquisition, unanimously approved by both companies’ boards.
- Exchange ratio: A fixed 4.500 Marvell shares for each Lumentum share.
- Value: About $115 billion in implied enterprise value, including debt; about $102.54 billion in equity value.
- Ownership: Marvell shareholders would own about 67 percent of the combined company, and Lumentum shareholders about 33 percent, on a fully diluted basis.
- Leadership: Marvell chairman and chief executive Matt Murphy will lead the combined company; three Lumentum directors, including chief executive Michael Hurlston, will join Marvell’s board.
- Expected closing: First half of calendar 2028, subject to shareholder votes and regulatory approvals.
- Synergies: The companies see more than $1 billion in annual run-rate cost savings.
Because the exchange ratio is fixed, the dollar value of the deal will move with Marvell’s share price until closing. If Marvell’s shares rise, Lumentum holders receive more value; if they fall, they receive less. The 67-33 ownership split, by contrast, is stable regardless of the share price.
Why AI data centers need optical technology
The companies said the combination would create a leader in connectivity for artificial intelligence data centers, joining Marvell’s strengths in electrical and optical interconnect, network switching, and custom processors with Lumentum’s expertise in high-performance lasers and optical transceivers.
They put the combined company’s total addressable market at $550 billion, a company estimate that reflects how large they believe the market for AI connectivity hardware could become. The companies also said the deal is expected to add to Marvell’s non-GAAP earnings per share in the first year after closing.
Lumentum separately reported first-quarter revenue of $1.26 billion, up 136.5 percent from a year earlier and slightly above analyst expectations, and guided to roughly $1.6 billion in revenue for the next quarter. That growth underlines how quickly demand for optical components has risen as AI data center construction accelerates.
Industry analysts note that co-packaged optics, which place optical components directly alongside chips rather than in separate plug-in modules, could sharply cut power consumption in data centers. Vendor claims cited in technical coverage put a 1.6-terabit pluggable optical port at about 30 watts, compared with about 9 watts for a co-packaged optics port, though those figures are vendor estimates, not independent measurements.
Challenging Broadcom, and the road to closing
Reuters described the deal as Marvell stepping up its challenge to larger rival Broadcom during an AI spending boom, and as one of the boldest corporate bets yet on an AI boom that chip executives expect to underpin industry demand for years. It is Marvell’s largest purchase since its $10 billion buyout of Inphi in 2021.
Reports earlier in 2026 said Nvidia had invested $2 billion in each company, although neither company’s announcement of this deal mentions that investment. Marvell shares were up in premarket trading on Monday, while trading in Lumentum shares was halted, according to market reports.
The deal still faces a long road to completion. Both sets of shareholders must vote in favour, regulators in the United States and other jurisdictions must clear the transaction, and customary closing conditions must be met. Until closing, expected in the first half of 2028, the two companies will continue to operate separately.
Regulatory scrutiny of large semiconductor deals has been intense in recent years, and analysts will watch closely for any conditions regulators impose, particularly around optical technology used in telecommunications and data center infrastructure.
For investors, the deal is also a test of confidence in the AI spending cycle. Technology companies are committing sums approaching $1 trillion to data centers, chips, power, and networking gear, and shareholders are increasingly asking when that spending will turn into profits. Marvell’s bet is that owning both the electrical and optical sides of AI connectivity will put it at the centre of that spending, whatever happens to individual chip cycles.