Markets
Marvell's $115B Lumentum Deal Sank Both Stocks
Chipmaker Marvell agreed to buy Lumentum for 4.5 of its own shares each, an implied $115 billion. Marvell fell 12.7% and Lumentum 18.6%, leaving the target 12.7% below the offer.
The biggest chip deal of the year was announced before Monday's open and punished by the close. Marvell Technology agreed to buy Lumentum, the maker of the lasers and optical components that connect AI servers, in an all-stock transaction with an implied enterprise value of $115 billion. Each Lumentum share will be exchanged for 4.500 Marvell shares, a fixed ratio that the companies valued at about $1,132 per share, a 23.9% premium to both stocks' unaffected closing prices on October 28, the last trading day before speculation began. Marvell's holders would own about 67% of the combined company and Lumentum's about 33%.
By the close on November 2 Marvell had fallen 12.72% to $171.41 and Lumentum 18.59% to $684.40. A target falling on the day it is bought is rare, and the fixed ratio explains it: once the terms are set, Lumentum's price is tied to Marvell's, and Marvell's has collapsed since the reference date. It closed at $251.65 on October 28, so 4.5 shares were worth about $1,132 then and about $771 on Monday. Lumentum ended the day 12.7% below even that reduced value.
Marvell's own fall has two parts. One is dilution: handing a third of the enlarged company to Lumentum's holders is expensive if the market thinks the optical boom that lifted Lumentum's valuation is near its peak. The other is the sector. The Philadelphia Semiconductor Index fell 3.37% on Monday, after 7.20% on Friday, and closed below its 200-day moving average for the first time since June 2025. The companies promise more than $1 billion of annual cost savings and say the deal will add to Marvell's adjusted earnings per share in its first year; investors were in no mood to pay for promises.
The 12.7% gap measures what the market thinks could go wrong before closing, which the companies expect in the first half of 2028. The merger agreement filed with the SEC sets an outside date of November 1, 2027, extendable to August 1, 2028, a $5.8 billion fee payable by Marvell in some circumstances, $2.9 billion by Lumentum, and a $3.2 billion fee Marvell would pay if the deal fails on regulatory grounds. A fee that size says both sides expect a long antitrust review in several jurisdictions, and the time involved means the spread works out at roughly 8% a year if the deal closes on schedule.
For anyone following either stock, the ratio is now the main fact. Until closing, Lumentum will trade as a leveraged, discounted copy of Marvell, and news about the review, such as a second request from US regulators or a Chinese approval, will move the spread more than anything Lumentum itself reports. Marvell's reports, and the chip sector's mood, will move both.