Marvell Technology (NASDAQ:MRVL), a data infrastructure chipmaker for AI data centers, closed at $170.80, down 13%. The blockbuster announcement that the company was acquiring Lumentum sent shares lower, and investors are watching financing and integration risks next.
Trading volume reached 60.5 million shares, coming in about 171% above its three-month average of 22.3 million shares. Marvell Technology IPO'd in 2000 and has grown 1,111% since going public.
The S&P 500 (SNPINDEX:^GSPC) closed at 7,542, down 0.50%, while the Nasdaq Composite (NASDAQINDEX:^IXIC) finished at 25,164, down 1.07%. In the semiconductors for data infrastructure sector, Broadcom closed at $322.23, down 1.18%, while Lumentum finished at $684.40, down 18.59% after the deal headlines.
On Monday, Marvell Technology announced a $115 billion all-stock agreement to buy Lumentum, a manufacturer of critical optical communications components, network modules, and commercial lasers for efficient data transmission. The acquisition is intended to boost Marvell's data center offerings to capitalize on the artificial intelligence boom.
Last week, reports that Marvell was in advanced talks to buy Lumentum caused shares to slide as investors evaluated execution risk and capital allocation. Now that the deal has been announced, the market is weighing dilution, valuation, and financing risk.
Marvell CEO Matt Murphy explained the rationale for the acquisition, stating, "AI infrastructure is undergoing a fundamental architectural shift toward optical connectivity, creating an opportunity that comes along once in a generation."
Marvell was already on a path toward massive growth. During its Investor Day on Oct. 6, the company raised its revenue outlook for its 2028 fiscal year (FY), ended Jan. 31, 2028, to $20 billion, and set a FY2031 target of $70 billion to $90 billion in sales. Adding Lumentum could be a game changer, as tech giants spend billions of dollars to build data centers capable of rapid computational processing in support of increasingly complex AI systems.
Before you buy stock in Marvell Technology, consider this:
The Motley Fool Stock Advisor analyst team just identified what they believe are the 10 best stocks for investors to buy now… and Marvell Technology wasn’t one of them. The 10 stocks that made the cut could produce monster returns in the coming years.
Consider when Netflix made this list on December 17, 2004... if you invested $1,000 at the time of our recommendation, you’d have $334,793!* Or when Nvidia made this list on April 15, 2005... if you invested $1,000 at the time of our recommendation, you’d have $1,257,420!*
Now, it’s worth noting Stock Advisor’s total average return is 874% — a market-crushing outperformance compared to 209% for the S&P 500. Don't miss the latest top 10 list, available with Stock Advisor, and join an investing community built by individual investors for individual investors.
See the 10 stocks »
*Stock Advisor returns as of November 2, 2026.
Robert Izquierdo has positions in Broadcom and Marvell Technology. The Motley Fool has positions in and recommends Broadcom, Lumentum, and Marvell Technology. The Motley Fool has a disclosure policy.