Stock Market News 30 December 2025

January 17, 2026, 8:52 AM EST. Comfort Systems USA Inc. (NYSE: FIX) has extended its rally, up 27% in the last 30 days and 122% year to date. The stock trades at a P/E of 47.1x, well above the US market's typical levels, prompting questions about its valuation. The high multiple is framed by stronger earnings momentum, with EPS rising about 80% last year and 276% over three years. Eight analysts see EPS growing around 25% next year, versus about 16% for the broader market. Investors appear to price in continued earnings strength, even as the elevated P/E attracts scrutiny. The takeaway: the stock's valuation rests on growth expectations, and a pullback would hinge on a disappointment in the forecast.