Stock Market Today, June 8: Chipmakers rebound as Marvell’s S&P 500 entry and AI optimism lift tech

U.S. equities snapped back on Monday, June 8, as investors rotated toward technology and semiconductor exposure after last week’s steep sell-off. The S&P 500 rose 0.30% to 7,405.73 and the Nasdaq Composite climbed 0.86% to 25,929.66, while the Dow Jones Industrial Average slipped 0.16% to 50,786.01. In a day defined by a calmer tone after Friday’s decline, chip bellwethers and AI-linked names helped pull broader market indexes higher.

Marvell Technology shares led the chip rebound, rising about 10% following news that it is set to join the S&P 500. S&P Dow Jones Indices said Marvell (MRVL) will be added effective prior to the open of trading on Monday, June 22, as part of the quarterly rebalance, replacing Pool Corp (POOL) in the index. The update matters because S&P 500 constituents are typically bought by index-tracking funds and other systematic strategies during rebalance windows, creating a predictable source of incremental demand.

Intel and Micron were among the day’s standout performers as investors refocused on AI hardware supply chains. Intel shares were up roughly 11% and Micron Technology rose about 9-10%, according to the market recap. The optimism was fueled by market reports that large technology companies are considering Intel’s chip manufacturing and that memory demand connected to AI accelerators could remain strong. In particular, The Motley Fool’s market explainer tied Intel’s rally to reports that Alphabet, Nvidia, and Tesla were considering Intel’s manufacturing services for future AI accelerator chips, including a reported order count associated with Alphabet. It also connected Micron’s jump to Nvidia-related memory developments discussed in that same report. Neither Intel, Alphabet, Nvidia, nor Micron disclosed the underlying customer plans in the cited recaps, so the details should be treated as unconfirmed at this stage.

The broader tech tape reflected a more selective approach to AI headlines. Apple, for example, fell almost 2% after it unveiled an update to Siri described as AI-related, while Eli Lilly rose on positive clinical trial data for its Foundayo weight-loss drug. Meanwhile, other AI and semiconductor names also participated in the rebound, reinforcing the idea that the day’s gains were not limited to one company or a single trade.

Macro indicates were mixed. The market recap pointed to WTI crude closing just over $91 a barrel, with concerns about a Middle East escalation fading compared with last week. At the same time, it highlighted data released by the New York Fed suggesting consumer sentiment pressures are building, noting that more households in the May consumer confidence survey said their financial situation was worse than a year earlier. The recap described consumer confidence as one of several so-called “bear market” red flags flagged by Bank of America, alongside concerns about excessive speculation and credit stress.

Behind the trading, semiconductors remain a central pathway for AI infrastructure spending. Intel’s Intel Foundry Services, a foundry business within Intel, is designed to support customers building custom silicon and advanced systems, including manufacturing and advanced packaging capabilities. Intel positions its foundry offering as a full-stack approach, spanning process and advanced packaging and test. Micron, for its part, sells memory products that are especially important for AI workloads, including high-bandwidth memory (HBM), which is built to deliver the data throughput that AI accelerators require. Marvell, meanwhile, supplies infrastructure components for data centers, including networking and storage-related systems positioned around AI-era demand.

Even with the rebound, Monday’s move still reflects a market that can react quickly to narrative shifts. The more specific claims driving Intel and Micron’s gains, including reports about advanced chip manufacturing and memory contracting, were not presented in the cited market recaps as company confirmations. Investors also still face uncertainty around how much of the AI-chips bounce is “dip buying” versus evidence that fundamentals have strengthened enough to sustain the recovery. Near-term, the confirmed S&P 500 schedule keeps Marvell’s index-entry date, June 22, as a key catalyst to watch, as systematic buying typically accelerates closer to the effective date. Additional market drivers highlighted in the same coverage include upcoming economic and earnings data later in the week, which could determine whether chip gains broaden beyond tech.