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What Makes Comfort Systems USA (FIX) an Investment Bet?

Core Insights - Renaissance Investment Management's Q3 2025 "Large Cap Growth Strategy" investor letter indicates that stock prices continued to rise, with the S&P 500 reaching all-time highs in September, while the strategy underperformed its benchmarks [1] Company Performance - Comfort Systems USA, Inc. (NYSE:FIX) reported a one-month return of 18.33% and a 52-week gain of 146.48%, closing at $976.45 per share with a market capitalization of $34.441 billion on October 27, 2025 [2] - The company achieved a revenue of $2.5 billion in Q3 2025, reflecting a $639 million increase or 35% year-over-year growth [4] Growth Potential - Comfort Systems USA, Inc. demonstrated strong operating results with accelerating organic revenue growth and highlighted incremental margin opportunities, supported by a growing business pipeline from new data center constructions for AI applications [3] - The company is positioned to provide ongoing service and maintenance for the cooling needs of both existing and new data centers, indicating sustainable growth prospects [3]