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Comfort Systems USA Inc

FIX
Exchange
NYSE
Industry
Electrical Work
SEC CIK
0001035983

In the last 90 days, Comfort Systems USA Inc insiders filed 0 open-market purchases and 3 sales; 1,357 institutions reported holding it in 13F filings for Q2 2026, worth $64.6B in total; superinvestors Coatue Management and Markel Group hold it.

13F holders, Q4 2025

Institutional positions in Comfort Systems USA Inc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
1,043
+178 vs. Q3 2025
Shares held
33.3M
+67.2K (+0.2%) vs. Q3 2025
Total value
$31.1B
+$3.72B (+13.6%) vs. Q3 2025
New holders
260
353 more added
Sold out
82
338 more reduced

23 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting FIX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2025: 1,043 institutions
Q1 2021: 252 institutionsQ2 2021: 282 institutionsQ3 2021: 269 institutionsQ4 2021: 291 institutionsQ1 2022: 280 institutionsQ2 2022: 277 institutionsQ3 2022: 299 institutionsQ4 2022: 337 institutionsQ1 2023: 348 institutionsQ2 2023: 378 institutionsQ3 2023: 400 institutionsQ4 2023: 447 institutionsQ1 2024: 505 institutionsQ2 2024: 555 institutionsQ3 2024: 591 institutionsQ4 2024: 665 institutionsQ1 2025: 632 institutionsQ2 2025: 755 institutionsQ3 2025: 888 institutionsQ4 2025: 1,043 institutionsQ1 2026: 1,206 institutionsQ2 2026: 1,357 institutions
Value heldQ4 2025: $31.1B
Q1 2021: $2.57BQ2 2021: $2.67BQ3 2021: $2.43BQ4 2021: $3.41BQ1 2022: $3.11BQ2 2022: $2.88BQ3 2022: $3.35BQ4 2022: $3.92BQ1 2023: $5.03BQ2 2023: $5.62BQ3 2023: $5.97BQ4 2023: $7.16BQ1 2024: $11.0BQ2 2024: $10.5BQ3 2024: $13.1BQ4 2024: $14.4BQ1 2025: $10.9BQ2 2025: $18.1BQ3 2025: $27.5BQ4 2025: $31.1BQ1 2026: $44.6BQ2 2026: $64.6B
Institutions holding FIX and their total value by quarter
QuarterHoldersValue
Q2 20261,357$64.6B
Q1 20261,206$44.6B
Q4 20251,043$31.1B
Q3 2025888$27.5B
Q2 2025755$18.1B
Q1 2025632$10.9B
Q4 2024665$14.4B
Q3 2024591$13.1B
Q2 2024555$10.5B
Q1 2024505$11.0B
Q4 2023447$7.16B
Q3 2023400$5.97B
Q2 2023378$5.62B
Q1 2023348$5.03B
Q4 2022337$3.92B
Q3 2022299$3.35B
Q2 2022277$2.88B
Q1 2022280$3.11B
Q4 2021291$3.41B
Q3 2021269$2.43B
Q2 2021282$2.67B
Q1 2021252$2.57B

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Comfort Systems USA Inc; share changes are against Q3 2025.

Institutions holding FIX in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
O'Shaughnessy Asset Management, LLC11,601$10.8M0.06%+64+0.6%Added
Ci Investments Inc.11,400$10.6M0.05%+2,151+23.3%Added
Consolidated Planning Corp11,055$10.3M1.04%+4,746+75.2%Added
Mirae Asset Global Investments Co., Ltd.11,036$10.3M0.03%+6,607+149.2%Added
Dividend Assets Capital, LLC10,834$10.1M1.93%+331+3.2%Added
Quantinno Capital Management LP10,773$10.1M0.02%+4,599+74.5%Added
Resona Asset Management Co.,Ltd.10,738$10.1M0.05%+10,738New
Natixis Advisors, L.P.10,748$10.0M0.01%−4,450−29.3%Reduced
Kornitzer Capital Management Inc10,600$9.89M0.21%00.0%Unchanged
South Dakota Investment Council10,577$9.87M0.19%−2,231−17.4%Reduced
CBOE Vest Financial, LLC10,565$9.86M0.13%−197−1.8%Reduced
BI Asset Management Fondsmaeglerselskab A/S10,504$9.80M0.09%+7,303+228.1%Added
Mackenzie Financial Corp10,122$9.57M0.01%+3,018+42.5%Added
PensionDanmark Pensionsforsikringsaktieselskab10,116$9.44M0.09%+10,116New
MetLife Investment Management10,110$9.44M0.05%−9,625−48.8%Reduced
DnB Asset Management AS10,096$9.42M0.03%+7,143+241.9%Added
Assenagon Asset Management S.A.10,043$9.37M0.01%−23,408−70.0%Reduced
Quadrature Capital Ltd10,032$9.36M0.10%+10,032New
State of Michigan Retirement System10,000$9.33M0.05%+1,600+19.0%Added
Retirement Systems of Alabama9,912$9.25M0.03%−67,457−87.2%Reduced
Arizona State Retirement System9,667$9.02M0.05%−772−7.4%Reduced
Dai-Ichi Life Insurance Company, Ltd9,524$8.89M0.23%+9,524New
Los Angeles Capital Management LLC9,169$8.83M0.03%+92+1.0%Added
JGP Wealth Management, LLC9,370$8.74M0.91%+113+1.2%Added
Transamerica Financial Advisors, Inc.9,286$8.67M0.72%+8,620+1,294.3%Added
Thames Capital Management LLC9,273$8.65M1.26%00.0%Unchanged
Czech National Bank9,258$8.64M0.06%+9,258New
Citadel Advisors LLC9,139$8.53M0.01%−60,065−86.8%Reduced
CIBC Private Wealth Group, LLC9,049$8.44M0.01%−82−0.9%Reduced
California First Leasing Corp8,720$8.14M2.64%00.0%Unchanged
Xponance, Inc.8,598$8.02M0.06%+1,203+16.3%Added
Van Eck Associates Corp8,549$7.98M0.01%−25,865−75.2%Reduced
Dorsey Wright & Associates8,485$7.92M1.71%+539+6.8%Added
Acadian Asset Management LLC8,465$7.89M0.01%+6,082+255.2%Added
Eventide Asset Management, LLC8,343$7.80M0.12%+8,343New
CIBC Asset Management Inc8,314$7.76M0.02%+7,196+643.6%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys8,186$7.64M0.04%−849−9.4%Reduced
Natixis8,106$7.57M0.03%+8,106New
Pathstone Holdings, LLC8,099$7.56M0.03%−489−5.7%Reduced
AdvisorShares Investments LLC8,083$7.54M1.26%+7,768+2,466.0%Added
Cim, LLC7,974$7.44M0.98%−396−4.7%Reduced
New Millennium Group LLC7,970$7.44M3.22%+667+9.1%Added
Balyasny Asset Management LLC7,969$7.44M0.01%+7,969New
Forsta Ap-Fonden7,920$7.39M0.04%+7,920New
Amalgamated Bank7,883$7.36M0.05%−9,668−55.1%Reduced
Kennedy Capital Management, Inc.7,811$7.29M0.15%−2,905−27.1%Reduced
Advisors Asset Management, Inc.7,803$7.28M0.12%+2,128+37.5%Added
Andra AP-fonden7,800$7.28M0.09%+7,800New
Private Advisor Group, LLC7,752$7.23M0.03%−29−0.4%Reduced
Mountain Pacific Investment Advisers Inc7,740$7.22M1.17%−2,212−22.2%Reduced
Engle Capital Management, L.P.7,500$7.00M2.70%+7,500New
Brinker Capital Investments, LLC7,456$6.96M0.05%−4,026−35.1%Reduced
VestGen Advisors, LLC7,451$6.95M0.30%+2,929+64.8%Added
Peregrine Asset Advisers, Inc.7,430$6.93M1.96%+7,430New
Prudential PLC7,417$6.92M0.06%+7,417New
HighTower Advisors, LLC7,411$6.92M0.01%−764−9.3%Reduced
Hedeker Wealth, LLC7,135$6.66M1.40%−346−4.6%Reduced
Freedom Day Solutions, LLC7,070$6.60M1.79%−611−8.0%Reduced
Holocene Advisors, LP7,012$6.54M0.01%+7,012New
Davidson Capital Management Inc.7,008$6.54M1.42%−497−6.6%Reduced
Banco Santander, S.A.6,893$6.43M0.05%+40+0.6%Added
Aventail Capital Group, LP6,873$6.41M0.37%+2,759+67.1%Added
Huntleigh Advisors, Inc.6,795$6.34M1.07%+709+11.6%Added
Two Sigma Advisers, LP6,740$6.29M0.01%−560−7.7%Reduced
Janney Montgomery Scott LLC6,711$6.26M0.01%+751+12.6%Added
Beacon Harbor Wealth Advisors, Inc.6,674$6.23M1.38%−3,081−31.6%Reduced
Brown Advisory Inc6,657$6.21M0.01%−3,335−33.4%Reduced
Vontobel Holding Ltd.6,656$6.21M0.02%+3,544+113.9%Added
Intech Investment Management LLC6,610$6.17M0.06%−5,977−47.5%Reduced
Schwartz Investment Counsel Inc6,600$6.16M0.22%00.0%Unchanged
Zacks Investment Management6,552$6.12M0.05%−6,459−49.6%Reduced
ProShare Advisors LLC6,510$6.08M0.01%+5,013+334.9%Added
Mawer Investment Management Ltd.6,497$6.06M0.03%+6,497New
Anderson Hoagland & Co6,452$6.02M0.52%−1,747−21.3%Reduced
Deroy & Devereaux Private Investment Counsel Inc6,415$5.99M0.29%−200−3.0%Reduced
Illinois Municipal Retirement Fund6,413$5.99M0.08%+13+0.2%Added
Monument Capital Management6,294$5.87M1.46%−224−3.4%Reduced
Prosperitas Financial LLC6,263$5.85M2.28%−107−1.7%Reduced
British Columbia Investment Management Corp6,260$5.84M0.03%+6,260New
Soros Capital Management LLC6,260$5.84M1.53%+6,260New
SIR Capital Management, L.P.6,237$5.82M0.64%+1,837+41.8%Added
Oak Harvest Investment Services6,199$5.79M0.63%+443+7.7%Added
Cambridge Investment Research Advisors, Inc.6,176$5.76M0.02%+49+0.8%Added
Penobscot Investment Management Company, Inc.6,155$5.74M0.43%−678−9.9%Reduced
Bridges Investment Management Inc6,149$5.74M0.07%+286+4.9%Added
Independent Advisor Alliance6,064$5.66M0.14%+91+1.5%Added
Aquatic Capital Management LLC6,035$5.63M0.16%+6,035New
Vident Advisory, LLC6,033$5.63M0.05%+913+17.8%Added
Woodline Partners LP6,006$5.61M0.02%+6,006New
Merit Financial Group, LLC5,946$5.55M0.04%+1,172+24.5%Added
Avanza Fonder AB5,913$5.52M0.14%+5,913New
Stansberry Asset Management, LLC5,886$5.49M0.56%−13,473−69.6%Reduced
Sanctuary Advisors, LLC5,791$5.40M0.03%+2,828+95.4%Added
Argent Capital Management LLC5,783$5.40M0.15%−4,134−41.7%Reduced
Utah Retirement Systems5,741$5.36M0.05%00.0%Unchanged
Crossmark Global Holdings, Inc.5,732$5.35M0.08%+2,880+101.0%Added
Kestra Advisory Services, LLC5,687$5.31M0.02%+358+6.7%Added
OP Asset Management Ltd5,665$5.29M0.06%+4,349+330.5%Added
Insight Wealth Strategies, LLC5,622$5.25M0.60%−2,166−27.8%Reduced
Bank Julius Baer & Co. Ltd, Zurich5,548$5.25M0.01%+5,548New