Comfort Systems beat on everything; five banks cut targets anyway, and the street mean sits 49% higher

The AI data center contractor beat on revenue, earnings and a record $17.81 billion backlog, and five banks cut their price targets over margins within days, while the street's own mean target still sits 49% above the price.

Vincent JiangVincent Jiang · 3 min read
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Cooling towers and fans on the roof of a data center in Mesa, Arizona
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The cooling plant on a data center roof in Mesa, Arizona. Comfort Systems USA's crews install the mechanical and electrical systems inside AI data centers; the work behind the record $17.81 billion backlog.

On October 22, Comfort Systems USA−7.02% — Comfort Systems USA, down 7.02 percent today, the Houston contractor whose crews install the mechanical and electrical systems inside AI data centers, reported third-quarter revenue of $3.77 billion, ahead of the $3.40 billion FactSet+2.98% — FactSet, up 2.98 percent today estimate and up from $2.45 billion a year earlier 1. Net income reached $489.0 million, or $13.91 a diluted share, against a $12.85 estimate 1. The print was clean. The week that followed was not.

A $17.81 billion backlog, and technology customers are paying for it

Backlog stood at $17.81 billion at September 30, up from $14.06 billion at June 30 and $9.38 billion a year earlier, an eighth consecutive quarter of growth 12. Technology-related work made up 59% of revenue for the first nine months of 2026, up from 42% 2. Clients have contracted the work; shareholders fund the 22,700-person payroll that delivers it 23.

Quarterly revenue has almost tripled since the end of 2023, still accelerating

$1B$2B$3B$4BQ1 '24Q3 '24Q1 '25Q3 '25Q1 '26Q3 '26$3.77B
Data
Revenue
Q4 '23$1.36B
Q1 '24$1.54B
Q2 '24$1.81B
Q3 '24$1.81B
Q4 '24$1.87B
Q1 '25$1.83B
Q2 '25$2.17B
Q3 '25$2.45B
Q4 '25$2.65B
Q1 '26$2.87B
Q2 '26$3.27B
Q3 '26$3.77B
Quarterly revenue in US dollars, Q4 2023 through Q3 2026. Source 9.9

Management expects mid-40% same-store revenue growth for 2026 and mid-20% for 2027, with modular production space past 4 million square feet by year-end and toward 6 million by the end of 2027 2.

Five banks cut targets in two days

Across October 26 and 27, five banks lowered their price targets: DA Davidson to $1,850 from $2,100, Oppenheimer to $2,000 from $2,400 while keeping its Outperform rating 34, UBS to $1,900 from $2,225 3, KeyBanc to $1,979 from $2,125 on a margin miss 5, Stifel−2.44% — Stifel, down 2.44 percent today to $1,808 from $1,910 on margin pressure 6. The shares still fell 7.06% to $1,232.66 on October 29 7.

Five cuts in two days, yet every new target tops the $1,233 price

  • Previous target
  • New target
$0$500$1,000$1,500$2,000$2,500Oppenheimer$2,000$2,400-17%UBS$1,900$2,225-15%DA Davidson$1,850$2,100-12%KeyBanc$1,979$2,125-6.9%Stifel$1,808$1,910-5.3%
Data
Previous targetNew targetChange
Oppenheimer$2,400$2,000-16.7%
UBS$2,225$1,900-14.6%
DA Davidson$2,100$1,850-11.9%
KeyBanc$2,125$1,979-6.9%
Stifel$1,910$1,808-5.3%
Twelve-month price targets in US dollars, before and after the cuts of October 26 to 27, 2026. Sources 3, 4, 5 and 6.3,4,5,6

The filing shows margins the cuts do not

The published numbers complicate the bear case. Gross margin ran at 24.8% of revenue, exactly its year-ago level, and operating margin improved to 16.6% from 15.5% 2. The squeeze the banks flagged is mix, not collapse: chief financial officer Bill George pointed to more equipment and materials in the cost of large projects, purchase-accounting charges from acquisitions and the early stage of big jobs, and said gross profit per hour worked keeps improving 2.

Gross margin slipped two straight quarters from its Q1 2026 peak, still at its year-ago level

20%22%24%26%28%Q3 '24Q1 '25Q3 '25Q1 '26Q3 '2624.8%
Data
Gross margin
Q2 '2420.1%
Q3 '2421.1%
Q4 '2423.2%
Q1 '2522%
Q2 '2523.5%
Q3 '2524.8%
Q4 '2525.5%
Q1 '2626.3%
Q2 '2625.9%
Q3 '2624.8%
Quarterly gross margin, percent of revenue, from Comfort Systems USA SEC filings, Q2 2024 through Q3 2026. Source 9.9

The Street argues with its own average

Within seven days of the print, the consensus estimate for 2026 earnings per share rose to $49.72 from $48.35, and the 2027 figure climbed to $65.30 8. The mean analyst target of $1,916.88 sits 48.76% above the last close of $1,288.61 3. The street that cut five times in two days still prices the stock about half higher.

The doubling's finance chief leaves at the peak

Bill George, chief financial officer for 30 years, retires once the 2026 annual report is filed, and Julie Shaeff, the company's chief accounting officer, takes the seat 1. The ex-dividend date is November 12 3. Management expects 2027 gross margins to stay within recent ranges 2, so the open question runs into next year: whether the margin give is a phase of mix, or the price of scaling to $17.81 billion of contracted work.

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