#Marvell Buys the Lasers Behind AI Data Centers
Marvell Technology has agreed to buy Lumentum, a maker of lasers and optical parts, in an all-stock deal that values Lumentum at $115B including debt [1]. Lumentum holders get 4.5 Marvell shares for each share they own, worth about $1,132 apiece and a 23.9% premium to the October 28 close, before talks leaked.
The logic is simple. AI data centers link thousands of chips together, and copper wiring is running out of road at those speeds and distances. Light-based links move more data using less power. Marvell already designs the chips that sit inside these links. Lumentum makes the lasers that power them. Putting both under one roof lets Marvell sell a fuller package to Big Tech customers.
It is also a move against Broadcom, Google's long-standing custom chip partner, which already offers a wider menu of data center hardware [2]. Marvell has been building toward this. It bought photonics startup Celestial AI for $3.5B earlier this year, and its biggest previous deal was the $10B purchase of Inphi in 2021.
#What the Combined Company Looks Like
Annualized revenue, most recent quarter, non-GAAP. Marvell $12.6B, Lumentum $5.1B, combined $17.7B [3].
Based on the companies' most recent quarterly figures annualized, Lumentum adds roughly $5B in revenue to Marvell's $12.6B. The two firms expect the deal to lift Marvell's adjusted earnings per share in its first year after closing and eventually deliver more than $1B in annual cost savings, primarily through lower costs of goods sold.
Demand is not the problem. Lumentum's chief executive has said some products are sold out into 2029 [4]. On deal day, Lumentum guided second quarter fiscal 2027 revenue of $1.58B to $1.63B, well above the $1.48B analysts expected. A proposed US ban on new Chinese optical transceivers could push even more orders toward US suppliers like Lumentum.
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#The Price Marvell Shareholders Pay
The catch is ownership. Because Marvell is paying in shares, its current holders are expected to own about 67% of the combined company on a fully diluted basis, with Lumentum holders taking the other 33%. Lumentum brings in less than a third of combined revenue, so Marvell investors are giving up a large slice of the business for it.
The market has been uneasy. Since talks were first reported, Marvell shares have fallen about 22% and Lumentum about 8%, though a broad chip selloff after Intel's weak forecast added to the slide. Both stocks dipped again in premarket trading on the announcement.
Timing is another risk. The deal is not expected to close until the first half of 2028, and it needs shareholder and regulatory approval along the way. That is a long stretch in a market where today's shortage of optical parts could ease. Lumentum also sells to companies that compete with Marvell, and some may choose to buy elsewhere once their supplier belongs to a rival.
The real question is whether owning the lasers gives Marvell a lasting edge, or whether it is paying peak prices for a bottleneck that eases before 2028. Watch Lumentum's order book, any customer defections, and how regulators respond over the coming months.