Marvell agrees $115 billion all-stock deal for Lumentum

Lumentum stockholders will receive 4.5 Marvell shares for each share they own. Marvell CEO Matt Murphy will run the combined company, and Lumentum CEO Michael Hurlston will join Marvell's board.

The repricing

Both companies' shares dipped on Monday. Marvell's slide since Bloomberg reported the talks meant the offer was worth about $824 per Lumentum share at midday prices, or roughly $84 billion, according to a Stifel research note. That is well below the $115 billion headline figure.

Why Marvell wants the lasers

The deal puts what Lumentum describes as the world's largest indium phosphide wafer fab inside a chipmaker, at a time when lasers are among the scarcest parts of AI infrastructure. Stifel analyst Tore Svanberg wrote after Monday's conference call that management was "explicit that tight laser supply is not the reason for the deal, but rather a byproduct" of its view that scale-up optics demand has arrived.

Both companies call the combination "extreme co-design." Marvell's DSPs, switch silicon and silicon photonics will be engineered alongside Lumentum's indium phosphide lasers, transceivers and optical circuit switches. They claim a combined $550 billion addressable market and expect to cut more than $1 billion a year in costs. That $550 billion claim is far larger than the $39.5 billion optical components market Omdia measured in the four quarters through June.

Lumentum's results add momentum. Fiscal first-quarter revenue was $1.26 billion, up 136.5% year over year. The company reported a second major NPO/CPO win backed by more than $5 billion in purchase commitments.

Customers and competition

Lumentum sells lasers to module makers that also buy Marvell DSPs. Owning Lumentum's transceiver line puts Marvell in competition with those customers, though management said modules would be under 10% of combined revenue. Nvidia put $2 billion into each company this year, so it holds a stake on both sides of the deal.

Demand is tilting toward datacom. Omdia says datacom accounted for 74% of the $39.5 billion optical components market in the four quarters through June, against 22% for telecom. Transport orders are already outrunning supply. Ciena has pushed the Open CPX multi-source agreement, which pitches open, interoperable CPO and NPO against single-vendor designs. The Marvell-Lumentum deal tests whether AI optics buyers will accept one supplier for lasers, drivers and DSPs.