One of the largest technology acquisitions ever would bring custom AI processors, networking chips and optical components under the same company.
Marvell Technology has agreed to acquire Lumentum in an all-stock transaction valued at approximately $115 billion, making one of the largest bets yet on the infrastructure required to connect increasingly powerful AI processors.
The deal, announced Monday, combines Marvell's expertise in custom semiconductors and networking with Lumentum's optical technology, including lasers, transceivers and optical switching systems.
Under the agreement, Lumentum shareholders will receive 4.5 Marvell shares for every share they own, equivalent to approximately $1,132 per share based on the agreed valuation.
That represents a 23.9% premium to Lumentum's unaffected closing price on October 28.
The transaction has an equity value of approximately $102.5 billion and an enterprise value of $115 billion, including debt.
If completed, existing Marvell shareholders will own approximately 67% of the combined company, with Lumentum shareholders holding the remaining 33%.
The deal is expected to close in the first half of 2028, subject to shareholder and regulatory approvals.
Why Optical Connections Matter for AI
The acquisition addresses a problem emerging as AI computing systems become larger and more interconnected.
Training and running advanced AI models increasingly requires thousands of processors to exchange data at extremely high speeds.
Those connections consume electricity and create performance limitations that can prevent expensive processors from operating at their full potential.
Traditional electrical connections rely on copper, but moving signals over longer distances at higher speeds becomes increasingly difficult.
Optical technology offers an alternative, using light to transmit information through fiber or related optical components.
Lumentum develops many of the technologies needed to make that possible, including high-performance lasers and optical communication components.
Marvell already supplies networking processors, custom AI chips and components that help move data between computing systems.
Combining the businesses would allow engineers to design electrical and optical systems together rather than treat them as separate products.
That is becoming particularly important as chip manufacturers explore ways to bring optical connections closer to the processors themselves.
A $550 Billion Market Opportunity
Marvell estimates that the combination will expand its total addressable market to approximately $550 billion.
That figure is a company estimate of potential market demand, not a revenue forecast.
The companies also expect to identify more than $1 billion in annualized cost synergies.
Matt Murphy, Marvell's chairman and CEO, will continue leading the combined company. Lumentum CEO Michael Hurlston is expected to join Marvell's board.
The acquisition would further strengthen Marvell's position in AI infrastructure as it competes with Broadcom and other semiconductor manufacturers.
Marvell has already expanded its work on custom AI processors and interconnect technology for large cloud providers.
For Lumentum, the deal would place its optical components inside a larger semiconductor business with established relationships across AI data center infrastructure.
But the price creates substantial expectations.
The transaction requires shareholder approval and regulatory reviews, and it assumes that demand for AI computing and optical connectivity will continue growing strongly for years.
The companies will also need to integrate two sophisticated semiconductor operations while maintaining customer relationships that may include competitors of the combined business.
The deal is signed, but not completed.
If approved, it could establish a major new supplier across the electrical and optical infrastructure connecting the world's largest AI computing systems.
Sources: Marvell and Lumentum announcement · Reuters