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NYSE · FIXIndustrialsConstruction

Comfort Systems USA, Inc. (FIX)

$964.94−11.58%
Close Nov 5, 2026 · split-adjusted
Nov 4, 2026$1091.31▲ 14.16% in range
Nov 4, 2025Low $876.19 · High $2066.51Nov 4, 2026
What changed · written from our data
As of Nov 5, 2026

Comfort Systems USA closed at $964.94 on Nov 5, down 11.58%, 53.3% below its 52-week closing high. Volume of 1.7M shares was 2.66× its 20-day average (well above normal).

Split-adjusted performance: -44.6% over one month, -50.3% over six months, +0.9% over one year.

In the quarter ended Sep 30, 2026, revenue was $3.77B, up 53.7% from a year earlier, with a net margin of 13.0%.

Short interest was 757.6K shares at the Oct 15 settlement, down 10.9% from the prior report (2.2% of float, 2.0 days to cover).

Market cap$33.96B35.2M shares
Revenue · quarter$3.77B+53.7% YoY
Diluted EPS$13.91+68.6% YoY
P/E · TTM20.8×P/S 2.7×
Net margin13.0%Gross 24.8%
Dividend yield0.37%$0.9 last paid
52-week range876.19 – 2066.51−53.3% from high
Volume1.7M2.66× 20-day avg
Volatility · 60d71.1%Annualised
Short % of float2.2%2.0 days to cover
Net cash$2.11BCash $2.16B
Next earnings—Not scheduled
Split-adjusted performance
1W −27.2%1M −44.6%3M −43.1%6M −50.3%YTD +3.4%1Y +0.9%3Y +430.6%5Y +983.0%

Earnings reactions

History →

No reported quarters with price history yet.

Rank within Construction

Percentile among 54 companies (100 = best)

6-month momentum28
Revenue growth94
Net margin92
Value (low P/E)34
Size96

Industry medians: 6-month return −27.0%, revenue growth +10.2%, net margin 4.1%, P/E 16.8×.

Short interest

Details →
Shares short757.6K−10.9% vs prior
Days to cover2.0Settled Oct 15
% of float2.2%
Short vol. 10d48.1%of daily volume

Closest peers by size in Construction

CompanyPriceToday6MRev. growthNet marginP/EMkt cap
FIXComfort Systems USA$964.94−11.58%−50.3%+53.7%13.0%20.8$33.96B
DHID.R. Horton$157.63+0.41%+8.0%0.0%9.8%14.0$42.79BCompare
EMEEMCOR Group$595.32−6.87%−35.6%+28.8%7.2%16.9$26.06BCompare
PHMPultegroup$135.15−0.60%+15.7%−9.8%12.0%14.3$25.74BCompare
LENLennar$91.59−0.65%+4.4%−8.7%3.5%16.8$21.79BCompare
LEN.BLennar$89.33−0.94%+5.5%−8.7%3.5%16.4$21.25BCompare
JJacobs Solutions$147.54−7.85%+20.2%+34.5%3.3%50.7$17.27BCompare
NVRNVR$6,414.18+0.59%+6.7%−7.9%10.3%16.3$17.09BCompare
PWRQuanta Services$509.06−12.30%−32.2%+57.4%5.8%45.6$76.70BCompare

News about Comfort Systems USA

All news →
The Zacks Analyst Blog Highlights Comfort Systems, Quanta Services and Sterling InfrastructureZacks Investment Research · 20h ago▲ Positive3 Top-Ranked Lord Abbett Mutual Funds With Stellar Track RecordsZacks Investment Research · 1d agoNeutralComfort Systems and PulteGroup have been highlighted as Zacks Bull and Bear of the DayZacks Investment Research · 2d ago▲ PositiveBull of the Day: Comfort Systems USA (FIX)Zacks Investment Research · 2d ago▲ PositiveFIX Q3 Earnings Call Highlights Backlog Growth and 2027 OutlookZacks Investment Research · Oct 26, 2026▲ Positive

Quick answers

What does Comfort Systems USA do?
Comfort Systems is a mechanical, electrical, and plumbing contractor with significant exposure to the AI infrastructure buildout, with data centers and semiconductor projects accounting for over half of its sales today. It reports in two segments, mechanical (HVAC, plumbing, and piping services) and electrical (electrical installation and power distribution), and operates in 150 cities, with a strong presence in Texas.
What is FIX's market cap?
$33.96B, based on the Nov 5 close of $964.94.
What is FIX's P/E ratio?
20.8× trailing-twelve-month earnings of $1.63B.
Does Comfort Systems USA pay a dividend?
Yes. The latest regular dividend was $0.9 per share (ex-date Aug 13), an annualised yield of 0.37%.
How much of FIX is sold short?
757.6K shares, 2.2% of float, as of Oct 15, 2026.
What sector is FIX in?
Industrials, in the Construction industry.

About Comfort Systems USA

Comfort Systems is a mechanical, electrical, and plumbing contractor with significant exposure to the AI infrastructure buildout, with data centers and semiconductor projects accounting for over half of its sales today. It reports in two segments, mechanical (HVAC, plumbing, and piping services) and electrical (electrical installation and power distribution), and operates in 150 cities, with a strong presence in Texas.

HQ: Houston, TX22,700 employeesListed Jun 27, 1997comfortsystemsusa.com

Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology