Comfort Systems USA (FIX) Stock After Hours Today (Dec. 22, 2025): S&P 500 Inclusion, Leadership Shift, and What to Watch Before Tuesday’s Open
Comfort Systems USA, Inc. (NYSE: FIX) is ending Monday’s session firmly in the spotlight—coming off a powerful 2025 run, completing its long-telegraphed move into the S&P 500, and heading into a data-heavy Tuesday morning for U.S. markets. After the closing