Comfort Systems Stock Is Up Nearly 20% Today. Here's Why.

The heating, ventilation and air conditioning company's stock was recently zooming higher, jumping nearly 18% on Friday to extend 2025 and all-time highs; the shares, recently trading around $971, finished last year at $422.82. Today's jump marks the second big one-day move in the second half of this year alone. Some investors have seized on the stock as a beneficiary of AI-related growth and the belief that it can continue. Recent sources of demand, the company has said, have largely come from data center ...