Robinhood, AppLovin, and Emcor Stocks Trade Higher on News of S&P 500 Inclusion
1. AppLovin added to S&P 500 effective Sept. 22, boosting visibility. 2. Robinhood and Emcor Group also included in the index. 3. S&P 500 inclusion typically correlates with increased share price. 4. Stocks showed significant premarket gains prior to the announcement. 5. Quarterly rebalancing prompts shift to S&P SmallCap 600 for others.