Marvell Technology Inc. will join the S&P 500 index before the market opens on June 22, 2026. The chipmaker replaces PoolCorp in the benchmark index. This inclusion follows the company achieving key profitability milestones.
Surging demand for artificial intelligence technologies and custom chips drove the company's growth. The announcement occurred after markets closed on Friday, June 5.
Marvell shares surged nearly 6% in after-hours trading following the news. The stock had previously fallen nearly 17% during regular trading hours. A broader semiconductor sector sell-off caused the initial intraday decline.