Palantir, Dell and Erie join the S&P 500 (September 2024)
S&P announced in early September 2024 that Palantir, Dell Technologies and Erie Indemnity would join the S&P 500. Shares of the new constituents rallied in the days before the effective date as index funds bought in.
Each stock rose on the announcement as funds positioned ahead of the change.
The episodes reinforced the pattern where index additions carry a built-in demand floor.
The same forced-buying mechanism is now hitting Freshworks ahead of its October 8 inclusion.
