Nike is set to be removed from the S&P 100 on September 21, ending the sportswear company’s nearly 18-year run in the index of the largest U.S. companies. 

The change comes after a steep decline in Nike’s market value, with its shares having fallen sharply from their 2021 peak.

Nike will remain part of the broader S&P 500, so the removal from the S&P 100 does not mean the company is leaving the major U.S. stock market index entirely. 

Four technology companies—Dell Technologies, Palo Alto Networks, Arista Networks and SanDisk—will take the newly available positions in the S&P 100, Seeking Alpha has reported.

Nike is attempting to reverse its downturn by rebuilding wholesale relationships, improving product innovation and strengthening its performance-focused business as it faces weaker sales and increased competition from brands such as Hoka and On.