Shares of HVAC and electrical contractor Comfort Systems (NYSE:FIX) fell 3.5% in the afternoon session after geopolitical tensions in the Middle East sent crude oil prices soaring, stoking fears of resurgent inflation.

The price for Brent crude, the international benchmark, leaped over 6% to $82.57 a barrel amid an escalating war with Iran, which has threatened to block the Strait of Hormuz. This critical waterway handles about 20% of global oil flow. A sustained increase in energy prices could translate to higher inflation, potentially impacting consumer spending and corporate earnings. This scenario also complicates the Federal Reserve's path forward, as persistent inflation could delay anticipated interest rate cuts that investors have been counting on to support the economy.

The stock market overreacts to news, and big price drops can present good opportunities to buy high-quality stocks. Is now the time to buy Comfort Systems? Access our full analysis report here, it’s free.

Comfort Systems’s shares are very volatile and have had 27 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.

The previous big move we wrote about was 11 days ago when the stock gained 4.2% on the news that the company reported very good fourth-quarter 2025 results that significantly surpassed expectations, driven by strong earnings and a near-doubling of its project backlog.

For the quarter, revenue climbed 41.7% year-over-year to $2.65 billion, while earnings per share of $9.37 more than doubled from the prior year. Both figures easily beat analysts' consensus estimates. The company's backlog, a key indicator of future business, also surged by 99.3% year-over-year to reach $11.94 billion. Furthermore, Comfort Systems demonstrated improved profitability, with its operating margin expanding to 16.1% from 12.1% in the same quarter last year, reflecting greater operational efficiency.

Comfort Systems is up 38.8% since the beginning of the year, and at $1,393 per share, it is trading close to its 52-week high of $1,469 from February 2026. Investors who bought $1,000 worth of Comfort Systems’s shares 5 years ago would now be looking at an investment worth $20,415.

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