Nike is set to drop out of the S&P 100 before U.S. markets open on September 21, 2026, marking one of the more notable index shakeups of the year for a company that has long been a fixture among America’s largest publicly traded names. This Nike S&P 100 exit comes from S&P Dow Jones Indices as part of its regular quarterly rebalance, and it puts the sportswear giant in the same boat as three other well-known corporations losing their spot in the benchmark.