The S&P 500 index is one of the most widely followed stock market indices in the world, with trillions of dollars managed based on its makeup. When companies are added or removed from the index, it forces buying and selling in those companies’ shares by index funds that aim to track the performance of the index. Big tech stocks Dell and Palantir along with insurance company Erie Indemnity are the latest names to join the S&P 500 as part of the index’s quarterly rebalancing.

Here are all of the companies that have been added and removed from the S&P 500 in 2024 as of Sept. 23.

S&P 500 additions in 2024

S&P 500 removals in 2024

How are stocks added or removed from the S&P 500?

S&P Dow Jones Indices, which is a division of S&P Global, manages the S&P 500 index and sets the criteria for how companies are included or removed.

Here are some of the key criteria for inclusion in the S&P 500 as of August 2024.

• Must be a U.S.-based company.

• The company satisfies the periodic reporting obligations set forth in the U.S. Securities Exchange Act.

• Must be listed on a major U.S. stock exchange such as the NYSE, Nasdaq or Cboe.

• Must have a market capitalization of $18 billion or more.

• Stock should trade a minimum of 250,000 shares in each of the six months prior to being evaluated for index inclusion.

• The most recent quarter’s GAAP earnings as well as the sum of the previous four quarters’ GAAP earnings should be positive.

The S&P 500 index is weighted based on the market value of the companies in the index, which means the most valuable companies account for the largest percentage of the index. As of September 2024, Microsoft, Apple and Nvidia accounted for about 20 percent of the S&P 500.

Editorial Disclaimer: All investors are advised to conduct their own independent research into investment strategies before making an investment decision. In addition, investors are advised that past investment product performance is no guarantee of future price appreciation.