Comfort Systems USA (FIX) is trading sharply higher today after releasing first-quarter 2026 earnings after the market close on April 23, 2026, with investors reacting to a large year-over-year surge in profit, revenue, and cash generation. The quarter also featured a new record backlog, signaling continued strength in project awards and giving the market more confidence in near-term revenue visibility.

For the quarter ended March 31, 2026, Comfort Systems reported net income of $370.4 million, or $10.51 per diluted share, compared with $169.3 million, or $4.75 per diluted share, a year earlier. Revenue rose to $2.87 billion from $1.83 billion, while operating cash flow flipped to an inflow of $388.8 million versus an $88.0 million outflow in the prior-year quarter.

Backlog at March 31, 2026 was $12.45 billion, up from $11.94 billion at December 31, 2025 and $6.89 billion at March 31, 2025, underscoring the scale of the step-up in project volume over the past year. The company indicated sequential backlog gains were driven by increased project bookings in the technology sector at operations in North Carolina and Virginia, aligning with sustained demand for large, multi-quarter builds.

Investors will focus on management’s commentary during the April 24, 2026 conference call for clarity on booking trends, execution capacity, and whether strong margins and cash conversion can persist as backlog burns at a faster rate. With the stock reacting positively, forward-looking updates on pipeline strength and the cadence of technology-related awards will likely be the main driver of whether today’s move holds.