Marvell, Flex to Join S&P 500 in June Rebalance

S&P Global said Marvell Technology and Flex will be added to the S&P 500 effective June 22, 2026, as part of its routine quarterly rebalances. The two companies will replace Pool Corp and Campbell’s in the large-cap index.

Marvell Technology, based in Santa Clara, California, designs semiconductors used in artificial-intelligence infrastructure. The company has a market capitalization of about $230 billion. At a recent industry event, Nvidia CEO Jensen Huang described Marvell as “set to become the ‘next trillion-dollar company.'”

Flex, formerly known as Flextronics and headquartered in Austin, Texas, is an electronics manufacturer that provides design, manufacturing and supply-chain services to technology customers. Both Marvell and Flex will be added to the index on the announced effective date.

S&P Global completed rebalances of the S&P 500, S&P MidCap 400 and S&P SmallCap 600. The index changes reflect shifts in market capitalizations, corporate actions and the eligibility rules applied by the index provider. Pool Corp and Campbell’s will be removed from the S&P 500 when the changes take effect.

Index-tracking funds and exchange-traded funds that follow the S&P 500 will adjust holdings to match the updated membership on June 22. That rebalancing process typically prompts buying of newly added stocks and selling of those being removed, which can increase trading activity around the effective date.

Investors seeking exposure to the technology sector within the S&P 500 often use broad sector funds such as the State Street Technology Select Sector SPDR ETF (XLK). Investors looking for a non-cap-weighted approach may consider equal-weight S&P 500 funds such as the Invesco S&P 500 Equal Weight ETF (RSP). Fund managers and index trackers will implement trades in line with their fund structures ahead of the effective date.