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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
Mitsubishi UFJ Trust & Banking Corp26,103$24.4M0.06%+12,566+92.8%Added
Korea Investment CORP26,156$24.4M0.05%+26,156New
Manufacturers Life Insurance Company, The26,222$24.5M0.02%+450+1.7%Added
Citigroup Inc26,248$24.5M0.02%+12,174+86.5%Added
Creative Planning26,386$24.6M0.02%+4,872+22.6%Added
Fred Alger Management, LLC27,228$25.4M0.10%−6,878−20.2%Reduced
Advisor Group Holdings, Inc.27,391$25.6M0.04%+26+0.1%Added
Universal- Beteiligungs- und Servicegesellschaft mbH27,601$25.8M0.04%−1,222−4.2%Reduced
Candriam Luxembourg S.C.A.28,286$26.4M0.13%+27,764+5,318.8%Added
Moran Wealth Management, LLC28,357$26.5M0.81%+7,192+34.0%Added
Cetera Investment Advisers28,456$26.6M0.03%+119+0.4%Added
Aviva PLC28,773$26.9M0.05%+28,134+4,402.8%Added
Jefferies Financial Group Inc.29,124$27.2M0.22%+22,452+336.5%Added
Ensign Peak Advisors, Inc29,579$27.6M0.05%+21,410+262.1%Added
Danske Bank A/S29,801$27.8M0.06%+5,266+21.5%Added
New York State Teachers Retirement System29,865$27.9M0.05%−2,476−7.7%Reduced
Bessemer Group Inc29,958$28.0M0.04%+299+1.0%Added
Waratah Capital Advisors Ltd.30,161$28.1M2.14%+3,309+12.3%Added
CWM, LLC30,320$28.3M0.08%+4,789+18.8%Added
Schonfeld Strategic Advisors LLC31,217$29.1M0.15%+10,742+52.5%Added
Mariner, LLC32,016$29.9M0.04%+14,345+81.2%Added
Robeco Schweiz AG32,675$30.5M0.68%−36,525−52.8%Reduced
Credit Agricole S A33,116$30.9M0.09%+4,243+14.7%Added
Man Group plc33,324$31.1M0.06%+14,485+76.9%Added
BWCP, LP33,610$31.4M5.20%−6,160−15.5%Reduced
New York State Common Retirement Fund33,694$31.4M0.04%−248−0.7%Reduced
State Board of Administration of Florida Retirement System34,043$31.8M0.06%+728+2.2%Added
Panagora Asset Management Inc35,315$33.0M0.12%+2,892+8.9%Added
Macquarie Group Ltd35,685$33.3M0.15%−7,254−16.9%Reduced
Bank of Montreal36,017$33.6M0.01%+21,116+141.7%Added
CIBC World Markets Inc.36,089$33.7M0.06%+6,589+22.3%Added
Asset Management One Co.,Ltd.35,880$34.0M0.09%+22,269+163.6%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.37,369$34.9M0.04%+37,005+10,166.2%Added
Renaissance Group LLC38,796$36.2M1.45%−13,908−26.4%Reduced
Driehaus Capital Management LLC40,482$37.8M0.26%−10,112−20.0%Reduced
Kayne Anderson Rudnick Investment Management LLC40,823$38.1M0.10%−9,594−19.0%Reduced
Cerity Partners LLC41,391$38.6M0.06%+8,377+25.4%Added
Teacher Retirement System of Texas43,563$40.7M0.14%+34,336+372.1%Added
Nomura Asset Management International Inc.45,060$42.1M0.06%+45,060New
Merewether Investment Management, LP46,349$43.3M0.99%+42,180+1,011.8%Added
National Pension Service47,044$43.9M0.03%+47,044New
E. Ohman J:or Asset Management AB48,559$45.3M1.06%+210.0%Added
Systematic Financial Management LP49,050$45.8M1.08%−15,434−23.9%Reduced
TimesSquare Capital Management, LLC51,220$47.8M0.72%+49,575+3,013.7%Added
Temasek Holdings (Private) Ltd52,557$49.1M0.16%+52,557New
Neuberger Berman Group LLC52,726$49.2M0.04%−12,070−18.6%Reduced
Artemis Investment Management LLP53,195$49.6M0.60%−40,136−43.0%Reduced
LPL Financial LLC53,554$50.0M0.01%−1,112−2.0%Reduced
Renaissance Technologies LLC53,980$50.4M0.08%+3,580+7.1%Added
SEI Investments Co54,154$50.5M0.05%+7,745+16.7%Added
Gotham Asset Management, LLC54,395$50.8M0.19%+16,301+42.8%Added
California State Teachers Retirement System55,384$51.7M0.05%+21,457+63.2%Added
Blue Grotto Capital, LLC55,601$51.9M5.33%−40,006−41.8%Reduced
Victory Capital Management Inc56,772$53.0M0.03%−29,098−33.9%Reduced
BNP Paribas Arbitrage, SA57,199$53.4M0.03%+39,888+230.4%Added
Lazard Asset Management LLC59,272$55.3M0.09%−86,199−59.3%Reduced
HSBC Holdings PLC59,321$55.5M0.03%+52,379+754.5%Added
Wells Fargo & Company59,670$55.7M0.01%+9,547+19.0%Added
Handelsbanken Fonder AB59,898$55.9M0.17%−54,560−47.7%Reduced
EULAV Asset Management60,708$56.7M1.51%−59,900−49.7%Reduced
Storebrand Asset Management AS60,946$56.9M0.15%+32,301+112.8%Added
Millennium Management LLC62,344$58.2M0.04%−296,341−82.6%Reduced
Smith Group Asset Management, LLC64,873$60.5M3.21%+2,213+3.5%Added
Freestone Grove Partners LP65,708$61.3M0.44%+13,404+25.6%Added
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main65,954$61.6M0.05%−100,568−60.4%Reduced
California Public Employees Retirement System66,284$61.9M0.04%−1,449−2.1%Reduced
Envestnet Asset Management Inc66,412$62.0M0.02%−19,418−22.6%Reduced
Squarepoint Ops LLC66,569$62.1M0.13%+63,199+1,875.3%Added
Schroder Investment Management Group66,663$62.2M0.05%+22,659+51.5%Added
Rhumbline Advisers67,179$62.7M0.05%−29,484−30.5%Reduced
Barclays PLC67,583$63.1M0.03%+2,879+4.4%Added
Bridgewater Associates, LP68,199$63.6M0.23%+16,116+30.9%Added
Allspring Global Investments Holdings, LLC65,366$65.6M0.11%+65,366New
Sumitomo Mitsui Trust Holdings, Inc.74,658$69.7M0.04%+74,357+24,703.3%Added
Fiera Capital Corp77,117$72.0M0.23%+18,985+32.7%Added
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.73,560$73.8M0.05%+73,491+106,508.7%Added
Congress Asset Management Co82,338$76.8M0.54%−13,539−14.1%Reduced
Ieq Capital, LLC82,925$77.4M0.23%+19,889+31.6%Added
Qube Research & Technologies Ltd83,184$77.6M0.11%−133,531−61.6%Reduced
D. E. Shaw & Co., Inc.84,501$78.9M0.06%−103,093−55.0%Reduced
Robeco Institutional Asset Management B.V.84,731$79.1M0.11%+82,295+3,378.3%Added
Raymond James Financial Inc86,390$80.6M0.03%−14,953−14.8%Reduced
Allianz Asset Management GmbH90,856$84.8M0.10%+13,183+17.0%Added
KBC Group NV91,729$85.6M0.20%+90,754+9,308.1%Added
WCM Investment Management, LLC93,706$88.7M0.18%+12,883+15.9%Added
Swiss National Bank96,680$90.2M0.05%+27,780+40.3%Added
Janus Henderson Group PLC98,927$92.3M0.04%+12,746+14.8%Added
Russell Investments Group, Ltd.101,295$94.5M0.10%−4,704−4.4%Reduced
Principal Financial Group Inc104,089$97.2M0.05%−56,609−35.2%Reduced
Third Point LLCSuperinvestorThird Point105,000$98.0M1.35%−95,000−47.5%Reduced
Caisse de Depot Et Placement du Quebec105,584$98.5M0.17%−15,349−12.7%Reduced
GW&K Investment Management, LLC111,647$104.2M0.90%−63,170−36.1%Reduced
Amundi112,626$105.1M0.03%+104,546+1,293.9%Added
Capital International Investors113,632$106.1M0.02%−26,796−19.1%Reduced
American Century Companies Inc114,070$106.5M0.05%+7,742+7.3%Added
Ameriprise Financial Inc115,980$108.2M0.02%−28,282−19.6%Reduced
Capital Research Global Investors116,587$108.8M0.02%−36,020−23.6%Reduced
Royal Bank of Canada117,366$109.5M0.02%+21,941+23.0%Added
Legal & General Group Plc121,860$113.7M0.03%+60,315+98.0%Added
SG Americas Securities, LLC122,465$114.3M0.15%+120,400+5,830.5%Added