Marvell Technology has agreed to acquire data-centre optics maker Lumentum in an all-stock transaction valued at about $115 billion including debt, making it one of the largest corporate bets on the artificial intelligence infrastructure boom. Under the terms announced Monday, Lumentum shareholders will receive 4.5 Marvell common shares for each share they own, implying roughly $1,132 per Lumentum share and a 24% premium to its October 28 closing price.
The acquisition combines Marvell’s custom AI chips, networking processors and data-centre connectivity technologies with Lumentum’s lasers, semiconductor components and optical interconnect hardware. Marvell said the deal would widen its total addressable market to $550 billion and strengthen its competitive position against larger rival Broadcom. Chief Executive Matt Murphy called the optical connectivity shift 'a once-in-a-generation opportunity.'
However, investors reacted negatively. Marvell shares fell more than 3% and Lumentum shares about 8% after Monday's open, and the declines deepened later: Lumentum closed down about 19% while Marvell dropped about 13%. Analysts downgraded both stocks, citing severe dilution from the all-stock structure, possible customer conflicts, execution risk and a lengthy regulatory path.
Bank of America downgraded Marvell to Neutral from Buy and cut its price target to $225 from $400, warning that planned cost savings of $1 billion appear insufficient to offset roughly 50% share-count dilution. TD Cowen also moved Marvell to Hold from Buy, lowering its target to $175 from $350 and estimating mid-single-digit earnings-per-share dilution in calendar 2028. On Lumentum, Stifel cut its rating to Hold and B. Riley to Neutral, while Raymond James upgraded Lumentum to Strong Buy, arguing its valuation is now tied to an undervalued Marvell and assigning a $1,328 value.
Nvidia is a strategic link between the two companies. It announced a multiyear purchase commitment and a $2 billion investment in Lumentum in early March, then invested another $2 billion in Marvell later that month. Marvell has also built custom AI processors for Amazon Web Services and expanded its commercial relationship with Google, an agreement that could generate up to $120 billion in sales through fiscal 2033.
Lumentum reported fiscal first-quarter adjusted earnings of $4.57 per share, above the $4.22 estimate, while revenue surged 136% year over year to $1.26 billion. It guided second-quarter revenue to $1.575 billion to $1.625 billion, well above consensus.
Regulatory approval remains a major obstacle. Both companies have significant China exposure, and analysts including Cantor Fitzgerald’s CJ Muse and Counterpoint Research’s Neil Shah said China’s SAMR review could delay or threaten the deal. The companies expect closing in the first half of 2028. Needham’s Ryan Koontz said Lumentum’s board still must convince shareholders, and questioned whether combining the businesses can realistically produce the targeted cost savings.
