Marvell to Acquire Lumentum in $115 Billion All-Stock Deal

Marvell has signed a definitive agreement to acquire Lumentum, valuing the optical chip and networking equipment maker at an enterprise value of $115 billion, debt included, with an equity value of roughly $80 billion. The all-stock transaction offers 4.5 Marvell shares for each Lumentum share, and it places the deal among the largest acquisitions in the history of the technology industry.

The scale is easy to state in comparisons. Microsoft paid $68.7 billion for Activision Blizzard in 2022. Dell paid $67 billion for EMC in 2016. The Marvell-Lumentum transaction exceeds both, and it does so in a sector — optical components and custom silicon for data centers — that until recently drew far smaller checks.

What does the deal actually combine?

Marvell designs custom chips, including silicon that powers data center infrastructure for large cloud and AI customers. Lumentum makes optical chips and networking equipment, most notably the laser components that carry traffic between servers inside modern data centers. Put simply, Marvell builds compute and switching silicon; Lumentum builds the light-based links that move data between machines.

Marvell says the combined company will become a leader in AI connectivity, with a product range that spans individual chips through complete data center equipment. The logic of the merger rests on that breadth: AI clusters fail or succeed on the speed of the links between accelerators, not only on the accelerators themselves. A supplier that controls both the silicon and the optics can sell the interconnect as a system rather than as parts.

The takeaway is that Marvell is buying its way from a chip supplier into an end-to-end AI infrastructure vendor.

Where does Nvidia fit?

The two companies share one major shareholder: Nvidia. The GPU maker sits on both sides of this transaction, and its position is the result of two investments made within the same month.

In March, Nvidia invested $2 billion in Lumentum as part of a multi-year agreement to purchase Lumentum's advanced laser components. The money was earmarked for Lumentum's research and development and for expansion of its fabrication capacity. Later that same month, Nvidia invested another $2 billion in Marvell, with the stated aim of strengthening Marvell's optical networking and chip portfolio.

Nvidia therefore backed both the buyer and the target, in deals totaling $4 billion, before they agreed to merge. The investments also came with commercial strings — the multi-year purchasing agreement for laser components ties Lumentum's output to Nvidia's supply chain needs. Whether Nvidia's dual position influenced the timing of the merger is not stated by either company, but the overlap means the transaction consolidates two pieces of Nvidia's optical supply base into a single counterparty.

The takeaway is that Nvidia has, through capital rather than acquisition, helped assemble the very supplier base this deal now locks together.

When will it close, and what stands in the way?

The transaction is expected to close in the first half of calendar year 2028. That is a long runway for a deal announced now, and the companies themselves name the conditions: shareholders of both companies must approve, and regulators must agree.

Antitrust review is the obvious variable. A $115 billion combination in semiconductors and optical components, two sectors already under heavy regulatory scrutiny in the United States, Europe and China, invites a lengthy process. The multi-year timeline the companies cite suggests they expect exactly that. The complex picture is also commercial: Lumentum's existing purchasing agreement with Nvidia, signed alongside that company's $2 billion investment, will carry into the combined entity unless renegotiated.

The takeaway is that the deal's value is certain on paper, but its completion depends on two shareholder votes and an untested regulatory path.

If the transaction closes as planned in 2028, Marvell will compete for AI infrastructure budgets with a portfolio few rivals can match across both silicon and photonics, and the market for optical interconnect — the physical bottleneck of AI data centers — will have one fewer independent supplier.