10 Mid-Cap Stocks That Are On Fire Right Now

7. Comfort Systems USA, Inc. (NYSE:FIX) 

Year-to-Date Performance: 86.02%

Market Capitalization: $65.62 Billion

Number of Hedge Fund Holders: 72

Comfort Systems USA, Inc. (NYSE:FIX) ranks among mid-cap stocks that are on fire right now. On April 24, Stifel reiterated its Buy rating on Comfort Systems USA, Inc. (NYSE:FIX) with a price target of $1,819 on the stock after the company reported its Q1 results.

The company posted revenue of $2.87 billion for the first quarter of 2026, beating market expectations of $2.40 billion. Total revenue rose 57% compared to the same period last year. This performance was supported by organic growth of 52% and acquisitions adding 500 basis points.

The technology end market saw strong growth, rising 139% year-over-year. It made up about 56% of sales during the quarter, with most of the demand coming from data center projects. Adjusted EBITDA reached $524 million, beating the $355 million market estimate, supported by better-than-expected gross margins.

Profitability in the first quarter was also supported by around $43 million of unusual closeout and change order benefits, which added nearly $1 per share to earnings. Comfort Systems USA, Inc. (NYSE:FIX) grew its total backlog by 81% year-over-year, with the Mechanical segment rising 84% and the Electrical segment increasing 70%.

New project awards increased 24% compared to the same period last year. Mechanical awards were up 37%, while Electrical awards declined by 7%. Stifel analyst Brian Brophy said that revenue exceeded expectations in both segments.

Comfort Systems USA, Inc. (NYSE: FIX) is a leading building and service provider for mechanical, electrical and plumbing building systems. The company offers commercial, industrial and institutional heating, ventilation, air conditioning, and electrical contracting services.