Marvell Lumentum Deal Worth $115 Billion Targets AI Optics

Marvell Technology agreed on Monday, November 2, 2026, to buy optical components maker Lumentum in an all-stock deal that values Lumentum at about $115 billion. The Marvell Lumentum merger gives Lumentum shareholders 4.5 Marvell shares for each share they own, worth roughly $1,132 per share, and is expected to close in the first half of 2028.

The price is a premium of about 23.9% over both companies’ closing prices on October 28, the last trading day before reports of the talks surfaced, Marvell said in its announcement. After closing, current Marvell shareholders will own about 67% of the combined company and Lumentum shareholders about 33%. Both boards approved the deal unanimously.

Why Marvell Lumentum Is About Light, Not Copper

The bet is that AI data centers are running out of room with copper wiring. As companies link thousands of AI chips together, the bandwidth they need keeps climbing, and the industry is moving toward optical links that carry data as light over fiber.

Marvell already makes custom AI chips, network switches and the electrical side of data center interconnects. Lumentum brings high-performance lasers, optical transceivers, optical circuit switching and its own compound semiconductor factories. The two companies say putting both under one roof will let them design electrical and optical parts together and ship pre-validated optical systems faster.

“AI infrastructure is undergoing a fundamental architectural shift toward optical connectivity, creating an opportunity that comes along once in a generation,” Marvell Chairman and CEO Matt Murphy said in the announcement.

Lumentum CEO Michael Hurlston said the combined company would be positioned for “a market opportunity of $550 billion.” The companies also expect more than $1 billion in annual cost savings and say the deal should add to Marvell’s adjusted earnings per share in the first year after closing.

A Bigger Challenge to Broadcom

The deal is one of the largest tech acquisitions of 2026 and Marvell’s biggest since it bought Inphi for $10 billion in 2021. It also sharpens Marvell’s rivalry with Broadcom, which sells a broader range of AI data center hardware and has long been Google’s main custom chip partner, CNBC reported.

Nvidia invested $2 billion in each company earlier this year. Marvell, now worth more than $170 billion, also closed a $3.5 billion purchase of photonics startup Celestial AI in February. The AI chip race has already pushed rivals to new heights, as seen when AMD hit a $1 trillion market value in September.

Investors have been nervous, though. Since the talks were first reported late last month, Lumentum shares have fallen about 8% and Marvell about 22%, as a wider chip selloff followed Intel’s weak forecast. Memory makers have felt the same pressure, with Kioxia stock dropping 16% on Monday.

What Happens Next

The deal still needs approval from shareholders of both companies and from regulators, including a US antitrust review. Murphy will stay on as chairman and CEO, and three Lumentum directors, including Hurlston, will join Marvell’s seven-member board.

With a closing date more than a year away, the merger lands as US chip capacity is also expanding, from new optical suppliers to fabs such as Intel’s Arizona Fab 62. Lumentum competes with Coherent and China’s Zhongji Innolight, and a proposed US ban on new Chinese optical transceivers could steer more orders to American suppliers.