Marvell is paying $115 billion in stock for Lumentum. The reason is a length of cable. Copper carries GPU traffic inside one rack and stops paying off past it, so every accelerator outside that boundary buys a transceiver.
- All-stock deal. Lumentum holders receive 4.500 Marvell shares per share, a 23.9 percent premium to the 28 October close, and 33 percent of the combined company.
- Lumentum brings lasers, transceivers, optical circuit switching and compound semiconductor manufacturing. Marvell brings the electrical side, the switching and custom silicon.
- The pair claims a $550 billion addressable market and more than $1 billion in annual run-rate cost savings.
- Optical circuit switching is the part that changes operations. A fabric you can repatch makes cluster shape a runtime decision, and placement and gang scheduling assume a fixed shape today.
- Marvell revenue went from $3 billion in fiscal 2021 to $8.2 billion in fiscal 2026.
- Both stocks fell between the first reports and the signature, Lumentum about 8 percent and Marvell about 22.
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