Marvell Technology (MRVL) climbed 4.9% on Thursday to close at $316.43, defying a broad semiconductor downturn as traders focused on the company's artificial intelligence networking story and potential addition to the S&P 500 index. The stock touched an intraday high of $321.50 before retreating to $305.18 in after-hours trading, according to Google Finance data. Trading volume hit approximately 86.2 million shares, more than twice the typical daily average.
Index Inclusion Hype Drives Action
Marvell's stock is now being driven more by index-related speculation than its underlying AI narrative. MarketWatch reported that the S&P 500 index committee is expected to announce its quarterly rebalancing on Friday. With a market capitalization significantly exceeding that of other eligible candidates, Marvell is widely viewed as a strong contender for inclusion. While an S&P 500 slot doesn't directly impact Marvell's factories, customers, or revenue, it can trigger significant passive fund flows, as index-tracking funds are required to purchase shares of new members, creating short-term demand.
Semiconductor Sector Weakness
The broader chip sector underperformed the market on Thursday. The Dow Jones Industrial Average closed at a record high, and the S&P 500 gained 0.4%, but the Nasdaq Composite ended lower. Broadcom's disappointing quarterly revenue sent its shares down, dragging other AI-chip names lower. Reuters noted that while Marvell gained 4.9%, Advanced Micro Devices (AMD), Micron Technology (MU), and Qualcomm (QCOM) fell between 2.6% and 7.7%.
Nvidia CEO Endorsement and Strategic Investment
Nvidia CEO Jensen Huang appeared with Marvell CEO Matt Murphy at the Computex trade show in Taiwan earlier this week. Huang described Marvell's networking equipment as "essential" for AI data centers and suggested the company could become "the next trillion-dollar company," according to Investopedia. Adding weight to that relationship, a Marvell filing revealed that Nvidia purchased $2 billion in Marvell Series A convertible preferred stock as of March 31. Those preferred shares can be converted into up to 21.778 million Marvell common shares.
Strong Financial Results and Product Launch
Marvell's first-quarter fiscal 2027 revenue reached a record $2.418 billion, and the company guided second-quarter revenue to $2.7 billion, plus or minus 5%. CEO Murphy stated that Marvell expects growth to accelerate through fiscal 2027, driven primarily by its data-center segment. On June 1, Marvell launched the Teralynx T100 switch chip, boasting 102.4 terabits per second capacity. The chip is designed for AI and cloud data centers, with samples shipping to customers this quarter. "With AI workloads getting bigger and more complex, hyperscalers need network setups that lower latency, cut power, and scale well," said Rishi Chugh, a vice president and general manager at Marvell's data-center switch group. Alan Weckel of 650 Group called the T100 a significant step forward in latency, power efficiency, and total cost of ownership as data centers expand.
Valuation and Risks
AI chip stocks face high expectations. Broadcom's slide illustrated just how unforgiving the market can be. Matt Britzman of Hargreaves Lansdown described the move as "a classic case of very high expectations meeting a market that wanted perfection." Bernstein's Stacy Rasgon suggested Broadcom could "take a pause" over the next few quarters. Reuters reported that Marvell trades at 61.7 times forward earnings, compared to the S&P 500's 27.94 multiple. Key risks include AI orders not converting to revenue as quickly as anticipated, potential customer spending slowdowns, and the possibility that the S&P 500 committee again passes over Marvell. The after-hours decline suggests sellers remain active.
All eyes are now on Friday's S&P 500 reshuffle. Beyond that, investors will be watching whether the Nvidia partnership, the Teralynx T100 launch, and Marvell's data-center pipeline can deliver the growth already priced into the stock.
