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Marvell Stock Is Surging. It’s About More Than the Chip Rebound.
Updated June 08, 2026, 1:59 pm EDT / Original June 08, 2026, 6:30 am EDT
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Marvell Technology and Flex will join the S&P 500 on June 22, causing their shares to rise on Monday.
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Inclusion in the S&P 500 typically boosts a stock’s value as passive index funds are required to purchase its shares.
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Despite recent dips, Marvell’s stock was up 210% for the year and Flex’s shares had jumped 151% in 2026 through Friday.
MRVL\ \ +9.63% stock was rising Monday as investors reacted to the news that it is to join the S&P 500 later this month.
Shares in Marvell jumped 13.7% to $299.53 in early afternoon trading. The S&P 500
SPX\ \ +0.30% was 0.5% higher, and the iShares Semiconductor exchange-traded fund was up 6.4%.
S&P Dow Jones Indices said in a press release after Friday’s close that chip maker Marvell and electronics manufacturing company Flex would join the S&P 500 on June 22 as part of a quarterly rebalancing.
The announcement came the same day that Marvell slumped 17% as investors slammed the brakes on the artificial-intelligence rally following so-so revenue guidance from Broadcom
AVGO\ \ +2.82% and a stronger-than-expected May jobs report. The iShares Semiconductor ETF tumbled 10% on Friday.
Joining the S&P 500 tends to boost a stock because passive index funds that track the benchmark gauge are legally required to load up on members’ shares.
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Marvell stock was already up 210% for the year through Friday’s close, powered higher by the AI boom driving up demand for the company’s chips and networking products.
Flex shares, which gained 0.2% early Monday, have jumped 151% in 2026, boosted by the surge in construction of data centers.
The two stocks will replace canned foods maker Campbell’s and swimming pool supplier Pool in the S&P 500. Campbell’s slid 2.3% and Pool declined 1.6% on Monday.
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