Marvell to buy Lumentum in $115 billion AI data center deal

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Marvell to buy Lumentum AI deal

Highlights

Marvell announces a $115 billion acquisition of Lumentum, expanding its optical data center presence amid surging AI infrastructure demand in 2026.
Marvell secures up to $120 billion in chip orders from Google through fiscal 2033 and allows Google to buy a $12.2 billion stake.
Lumentum shares fall 8% and Marvell shares drop 22% after the deal, as chip sector sentiment weakens following Intel’s disappointing outlook.

Deal expands Marvell’s optical data center push

As first reported by CNBC, the transaction is announced on Monday and ranks among the biggest deals of 2026, underscoring how chipmakers are positioning for years of expected demand tied to AI systems and data center buildouts.

Marvell is acquiring a company roughly half its size, betting that demand for optical components used to move data at high speeds will continue to outstrip supply as large technology groups keep increasing AI investment. Earlier this year, Nvidia invested $2 billion each in Marvell and Lumentum, adding to the strategic importance of both companies in the AI infrastructure market.

Marvell has already been expanding its photonics business in 2026. It closes a $3.5 billion purchase of Celestial AI in February, as wider use of AI agents and chatbots drives demand for faster optical links connecting thousands of chips in AI data centers.

Competitive pressure builds across AI hardware

For Marvell, the acquisition also strengthens its position against Broadcom, which has long served as Google’s main custom-chip partner and offers customers a broader portfolio of AI data center hardware. Marvell records one of its biggest wins in August, securing an agreement to supply chips alongside Google’s AI processors worth up to $120 billion in sales through fiscal 2033, while giving the search company the right to buy a $12.2 billion stake.

Marvell’s rise has been rapid. Its market value has climbed to more than $170 billion from its once lower profile, helped by work with customers such as Amazon on custom AI chips and networking technology, and its annual revenue has grown from $3 billion in fiscal 2021 to $8.2 billion in fiscal 2026.

Market reaction has been weaker since takeover talks are first reported late last month, with Lumentum shares down about 8% and Marvell shares down about 22% as a broader chip selloff accelerates after Intel’s weak forecast. Lumentum also stands to benefit from a proposed U.S. ban on new Chinese optical transceivers, which could shift demand toward domestic suppliers including U.S.-listed groups competing in the segment.

Our earlier report on mounting hurdles for U.S. AI data center expansion highlighted how rising funding costs, construction delays, and power constraints are slowing projects and testing investor confidence. It noted that only a minority of planned builds look credible, with cost overruns and local grid pressures becoming key bottlenecks even as AI demand remains strong.

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