Marvell Technology’s shares have taken a hammering after reports that the chip designer is negotiating to acquire optical-components manufacturer Lumentum.
According to Reuters the company is reportedly in advanced discussions to purchase Lumentum, potentially announcing an agreement as early as next week, according to sources familiar with the negotiations.
The prospect sent Lumentum shares up roughly nine per cent in extended trading, while Marvell fell more than eight per cent as investors weighed the financial implications.
For those not in the know, Lumentum is a major supplier of optical technology used in telecommunications networks and data centres, where growing AI workloads are forcing operators to move increasingly enormous quantities of information.
Its optical transceivers and related components transfer data between computing systems using light, addressing the bandwidth, power, and distance limitations of conventional electrical connections.
For Marvell, the attraction is obvious. The company already supplies custom processors, high-speed interconnects and networking silicon to cloud operators building increasingly complex AI infrastructure. Buying Lumentum would extend its influence into the optical components connecting those systems, giving the company a broader presence in one of the fastest-growing areas of semiconductor infrastructure.
Marvell has already shown interest in the technology through its acquisition of Celestial AI, a specialist in optical interconnect systems designed to connect accelerators and memory across large computing installations. Lumentum would represent a substantially larger commitment, however, and investors appear concerned that Marvell might be attempting to swallow more than its balance sheet can comfortably digest.
Lumentum’s reported market capitalisation is about $83 billion, meaning any acquisition could require a massive mix of borrowed money, newly issued shares, or other financing arrangements. Marvell’s most recently reported cash reserves stood at about $3.92 billion, leaving a considerable gap between available cash and the potential purchase price.
Analysts at Bernstein have warned that an acquisition could require substantial additional financing and introduce integration risks, particularly given the scale and complexity of the businesses involved. Marvell has already raised its fiscal 2028 revenue forecast from $15 billion to $20 billion, citing strong demand for custom AI chips and data-centre networking equipment.
The company therefore has a rapidly expanding business, making shareholders understandably nervous about taking on a massive acquisition while that growth is still unfolding. Neither Marvell nor Lumentum has confirmed an agreement, and discussions could still collapse or produce different terms. For now, the market has delivered its preliminary verdict by rewarding the potential seller and punishing the prospective buyer.
