Marvell-Lumentum Merger Would Hold Near 7% of Wired Comms Market

A combined Marvell and Lumentum would hold nearly 7% of the semiconductor wired communications market in 2026, placing it behind only NVIDIA and Broadcom, according to TrendForce estimates. The figure frames why Marvell Technology's acquisition of Lumentum Holdings — a deal valued at $115 billion, subject to shareholder and regulatory approval — matters beyond the two companies involved. TrendForce reckons the merger could reshape the competitive landscape of optical communications, where Broadcom currently holds a commanding position.

The market research firm ranks Marvell fourth and Lumentum eighth in projected full-year 2026 revenue for the wired communications semiconductor market. Marvell is headquartered in Santa Clara; Lumentum is based in San Jose and designs optical and photonic products for optical networks and lasers.

Why does Broadcom lead AI optical interconnects?

Broadcom's strength in AI optical communications and interconnects rests on breadth. Its portfolio spans both optical and electronic technologies: Tomahawk switch chips, digital signal processors (DSPs), and optical components including electro-absorption modulated lasers (EMLs) and continuous-wave (CW) lasers.

Marvell, by contrast, is primarily an electronic semiconductor specialist. Lumentum specializes in optical components. TrendForce argues that combining these complementary capabilities would create a more formidable competitor spanning both optical devices and semiconductor ICs — potentially challenging Broadcom's market leadership.

The two companies already occupy important positions in the optical communications supply chain. Lumentum is a key supplier of laser sources; Marvell provides DSPs and other semiconductor solutions for optical communications. If the deal closes, NVIDIA and other cloud service providers could gain access to a broader range of comprehensive electro-optical interconnect solutions, potentially reducing their reliance on Broadcom while keeping sourcing flexibility.

What does the deal change technically?

TrendForce views the acquisition as a strategic move to establish an early foothold in scale-in and scale-up interconnects as the industry shifts toward co-packaged optics (CPO) and near-packaged optics (NPO). Lumentum's indium phosphide (InP) laser technology fills a critical gap in Marvell's portfolio, allowing the company to fold its electronic and optical expertise into a more complete optical engine offering.

The combined stack would bring together:

• Marvell's advanced CMOS chip design, high-speed switching chips, electro-optical interconnects, silicon photonics, and custom XPU capabilities
• Lumentum's high-performance InP lasers, optical transceiver modules, and optical circuit switching (OCS) technologies

That would enable integrated solutions spanning chips, optical engines, laser sources, and modules. Coordinated design and pre-validation could help customers streamline development and speed adoption of next-generation optical interconnect technologies. The deal also expands Marvell's total addressable market to $550 billion.

Why is China's review the hard part?

The acquisition must secure regulatory approval in both the United States and China. TrendForce highlights that Chinese optical module makers are among the world's leading suppliers of 800G and 1.6T optical transceivers — and they rely heavily on Marvell's DSPs and on EML/CW laser sources from suppliers such as Lumentum.

Lumentum's ownership of optical module maker Cloud Light sharpens the concern. If the merged company restricted competitors' access to critical laser sources, bundled DSPs with laser products, or prioritized shipments to its own subsidiaries, Chinese optical module makers could face a substantial competitive disadvantage.

TrendForce therefore expects the merger's impact on the competitive position and long-term viability of Chinese optical module suppliers to be a central consideration in China's regulatory review. The verdict sentences write themselves: Washington will weigh NVIDIA's sourcing options, Beijing will weigh its module industry's survival, and neither question has an obvious answer.

The timing is not incidental. NVIDIA has announced a strategic partnership with Lumentum to develop data-center optics, and the AI interconnect market is consolidating around a handful of vertically integrated suppliers. If the deal clears both regulators, Broadcom faces its first credible challenger across the full optical-plus-electronic stack; if it stalls in Beijing, Marvell will keep a $115 billion strategy on paper.