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The best performing S&P 500 stock of the last five years is Comfort Systems (FIX). You'll never guess when a member of Congress bought and sold shares.
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As September historically brings market volatility, investors should focus on highly profitable companies with strong net income ratios and earnings growth. Three standout stocks meeting rigorous profitability criteria are NVIDIA (63.7% net margin, 93.3% earnings growth), BrightSpring Health Services (2.6% net margin, 82% earnings growth), and Comfort Systems USA (12.8% net margin, 60.7% earnings growth).
Comfort Systems USA (FIX) demonstrates exceptional financial flexibility with $1.85B in cash, minimal $54.1M debt, and strong free cash flow of $999M in Q2 2026. The company is aggressively expanding modular capacity to 5M square feet by late summer 2027, backed by customer commitments. FIX stock has surged 65.6% year-to-date and carries a Zacks Rank #1 (Strong Buy) rating, though it trades at a premium valuation with a forward P/E of 28.52.
DA Davidson analyst Kurt Yinger initiates coverage on Comfort Systems USA (NYSE:FIX) with a Buy rating and announces Price Target of $2100.