Marvell Technology (MRVL) is poised to enter the S&P 500 index, a milestone that typically triggers forced buying from index-tracking funds. However, the semiconductor firm saw its shares plummet nearly 17% on Friday, caught in a broad selloff that swept across the chip sector. The drop came despite a more than 300% surge in the stock price year-to-date, fueled by robust demand for artificial intelligence-related chips.
According to S&P Dow Jones Indices, Marvell and Flex will replace Pool Corp. and The Campbell's Company in the benchmark index, effective before the open on June 22. The changes are part of the quarterly rebalance. Index adjustments often create a wave of passive buying as funds tracking the S&P 500 are required to purchase shares of newly added companies and sell those removed.
Marvell shares closed at $263.47 on Friday, down $52.81 from the prior session, after hitting a low of $255.76. Trading volume surged to approximately 94 million shares. The broader chip selloff was led by the PHLX Semiconductor Index, which tumbled 10.3%—its steepest single-day drop since March 2020. Major chip stocks including Micron (down 13.3%), Broadcom (down 7.9%), and Nvidia (down 6.2%) also suffered heavy losses as traders unwound crowded positions.
AI Tailwinds and Market Volatility
The week began with optimism following comments from Nvidia CEO Jensen Huang at the Computex conference in Taipei. Huang joined Marvell CEO Matt Murphy on stage and described Marvell as the “next trillion-dollar company,” according to Reuters. The remark sent Marvell shares surging more than 25% on Tuesday to a record high, though the company's market capitalization remains far below the trillion-dollar threshold.
Marvell's fundamentals have strengthened amid the AI boom. On May 27, the company reported first-quarter fiscal 2027 revenue of $2.418 billion, a 28% year-over-year increase and a record. Adjusted diluted earnings came in at 80 cents per share. CEO Matt Murphy highlighted “exceptional AI-related bookings” and guided second-quarter revenue to a midpoint of $2.7 billion.
Custom Chip Business and Strategic Partnerships
Investor enthusiasm has centered on Marvell's custom-chip unit, which competes with Broadcom in designing tailored processors for cloud customers seeking alternatives to Nvidia's expensive and often scarce AI accelerators. Marvell projects its custom-chip revenue could exceed $10 billion by fiscal 2029. In March, Nvidia announced a $2 billion investment in Marvell and a partnership on NVLink Fusion, a technology that enables custom AI chips to connect seamlessly with Nvidia systems. “Token generation demand is surging,” Huang said at the time.
Marvell also unveiled its Teralynx T100 switch chip on June 1, capable of handling 102.4 terabits per second for data traffic within large AI clusters. Alan Weckel, co-founder of 650 Group, noted that data-center infrastructure has become a “defining factor” in network performance.
Market Pressures and Risk Factors
The chip selloff occurred against a backdrop of stronger-than-expected U.S. jobs data, which reignited fears that the Federal Reserve may raise interest rates. Higher rates typically weigh on technology stocks by reducing the present value of future earnings. The S&P 500 fell 2.6% on Friday, while the Nasdaq Composite slid 4.2%.
Despite the index inclusion catalyst, Marvell faces significant risks. The company's most recent 10-Q filing reveals heavy reliance on a small number of large customers, with sales increasingly concentrated in the data center segment. Some of these clients may develop in-house chips or turn to rivals. The filing also cites potential demand forecasting errors and supply-chain constraints as threats to revenue and margins.
With no investor events scheduled in the near term, market attention now turns to Monday's trading session. The June 22 index reshuffle could provide a floor for the stock, but Friday's sharp decline raises questions about whether the AI-driven rally has peaked. Marvell is navigating two powerful narratives: the passive inflows from index inclusion and the volatile, high-stakes AI chip story. How the market reacts in the coming days will offer clues about the sustainability of its meteoric rise.
