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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
Hartford Investment Management Co2,032$1.90M0.06%+2,032New
Sterling Capital Management LLC2,045$1.91M0.03%+1,992+3,758.5%Added
Integrated Quantitative Investments LLC2,050$1.91M0.41%+891+76.9%Added
Linden Thomas Advisory Services, LLC2,055$1.92M0.19%+84+4.3%Added
Bosman Wealth Management, LLC2,074$1.94M1.59%−1,086−34.4%Reduced
Omers Administration Corp2,078$1.94M0.01%+2,078New
Evoke Wealth, LLC2,082$1.94M0.04%−222−9.6%Reduced
Sivia Capital Partners, LLC2,117$1.98M0.40%+851+67.2%Added
Jennison Associates LLC2,118$1.98M0.00%−61,443−96.7%Reduced
Manchester Financial Inc2,132$1.99M0.37%−39−1.8%Reduced
Evolve Private Wealth, LLC2,135$1.99M0.12%+2,135New
Centaurus Financial, Inc.2,151$2.01M0.09%+28+1.3%Added
Moors & Cabot, Inc.2,155$2.01M0.09%−57−2.6%Reduced
Thrivent Financial for Lutherans2,172$2.04M0.00%−6,708−75.5%Reduced
Plato Investment Management Ltd2,180$2.04M0.13%+2,180New
Virtus ETF Advisers LLC2,192$2.05M0.97%+228+11.6%Added
VGI Partners Ltd2,200$2.05M0.12%−20−0.9%Reduced
Standard Life Aberdeen plc2,214$2.07M0.00%+2,214New
New Age Alpha Advisors, LLC2,215$2.07M0.09%−4,546−67.2%Reduced
Vestcor Inc2,234$2.08M0.06%+714+47.0%Added
Saturna Capital CORP2,256$2.11M0.03%+10+0.4%Added
Level Four Advisory Services, LLC2,296$2.14M0.07%−542−19.1%Reduced
Silver Oak Securities, Inc2,290$2.17M0.15%+37+1.6%Added
Strategic Wealth Partners, Ltd.2,325$2.17M0.15%+4+0.2%Added
Simplex Trading, LLC2,338$2.18M0.06%+1,321+129.9%Added
CWM Advisors, LLC2,412$2.25M0.20%+2,412New
Investment Management Corp of Ontario2,414$2.25M0.03%+2,414New
Union Bancaire Privee, UBP SA3,010$2.25M0.04%−1,802−37.4%Reduced
Hilltop Holdings Inc.2,419$2.26M0.14%−390−13.9%Reduced
Warren Averett Asset Management, LLC2,460$2.30M0.02%+493+25.1%Added
Abn Amro Investment Solutions2,465$2.30M0.03%+2,465New
Shaker Investments LLC2,487$2.32M0.97%−38−1.5%Reduced
Landscape Capital Management, L.L.C.2,528$2.36M0.16%+1,747+223.7%Added
Thompson Davis & Co., Inc.2,529$2.36M1.41%−343−11.9%Reduced
Twinbeech Capital LP2,539$2.37M0.17%+2,539New
HB Wealth Management, LLC2,550$2.38M0.02%+290+12.8%Added
Steel Peak Wealth Management LLC2,559$2.39M0.08%−783−23.4%Reduced
Private Client Services, LLC2,570$2.40M0.75%−161−5.9%Reduced
Diversify Advisory Services, LLC2,142$2.40M0.08%+406+23.4%Added
Mizuho Securities USA LLC2,563$2.41M0.04%+2,563New
Allstate Corp2,636$2.46M0.03%+2,636New
Dedeker Financial LLC2,638$2.46M2.20%+2,638New
Assetmark, Inc2,653$2.48M0.01%−48−1.8%Reduced
Harbor Capital Advisors, Inc.2,689$2.51M0.19%−6,597−71.0%Reduced
Geneva Partners, LLC2,735$2.55M0.91%+978+55.7%Added
Venture Visionary Partners LLC2,746$2.56M0.08%−3,994−59.3%Reduced
Jane Street Group, LLC2,757$2.57M0.00%−83,744−96.8%Reduced
Jones Financial Companies LLLP2,772$2.59M0.00%+1,034+59.5%Added
Walleye Trading LLC2,780$2.59M0.04%−4,957−64.1%Reduced
CI Private Wealth, LLC2,782$2.60M0.00%+902+48.0%Added
ASR Vermogensbeheer N.V.2,800$2.61M0.03%+2,800New
Pacer Advisors, Inc.2,806$2.62M0.01%−1,926−40.7%Reduced
Hancock Whitney Corp2,843$2.65M0.05%+33+1.2%Added
Azzad Asset Management Inc2,858$2.67M0.26%−161−5.3%Reduced
Teachers Retirement System of the State of Kentucky2,878$2.69M0.02%−8,436−74.6%Reduced
NorthCrest Asset Manangement, LLC2,606$2.69M0.06%+1,021+64.4%Added
Oppenheimer Asset Management Inc.2,920$2.73M0.03%−781−21.1%Reduced
Bridgeway Capital Management, LLC2,930$2.73M0.06%+2,930New
STRS Ohio2,933$2.74M0.01%+2,101+252.5%Added
Meritage Portfolio Management2,965$2.77M0.18%−321−9.8%Reduced
VMS Asset Management Limited3,010$2.81M1.08%+3,010New
Engineers Gate Manager LP3,026$2.82M0.03%−352−10.4%Reduced
Lifestyle Asset Management, Inc.3,046$2.84M0.92%−325−9.6%Reduced
Worldquant Millennium Advisors LLC3,056$2.85M0.01%+3,056New
RFG Advisory, LLC3,082$2.88M0.05%−384−11.1%Reduced
Penserra Capital Management LLC3,108$2.90M0.03%−618−16.6%Reduced
Sequoia Financial Advisors, LLC3,117$2.91M0.02%+993+46.8%Added
Rafferty Asset Management, LLC3,133$2.92M0.01%+2,525+415.3%Added
Blackhawk Capital Partners LLC.3,210$3.00M1.13%+193+6.4%Added
Capital Insight Partners, LLC3,311$3.09M0.65%−2,115−39.0%Reduced
Advisory Services Network, LLC3,321$3.10M0.04%+23+0.7%Added
Algert Global LLC3,340$3.12M0.05%−40,242−92.3%Reduced
Evergreen Capital Management LLC3,341$3.12M0.07%+630+23.2%Added
Public Employees Retirement Association of Colorado3,345$3.12M0.01%−59,705−94.7%Reduced
Strategic Global Advisors, LLC3,377$3.15M0.49%−3,000−47.0%Reduced
Callan Family Office, LLC3,418$3.19M0.07%+1,321+63.0%Added
Hunter Associates Investment Management LLC3,464$3.23M0.43%−190−5.2%Reduced
Essential Partners LLC3,471$3.24M1.00%+240+7.4%Added
Yorktown Management & Research Co Inc3,500$3.27M2.61%00.0%Unchanged
State of Alaska, Department of Revenue3,526$3.29M0.03%−270−7.1%Reduced
Park Avenue Securities LLC3,529$3.29M0.03%−90−2.5%Reduced
Allworth Financial LP3,532$3.30M0.01%−8−0.2%Reduced
Katamaran Capital LLP3,548$3.31M2.51%+2,343+194.4%Added
Two Sigma Investments, LP3,579$3.34M0.00%−27−0.7%Reduced
UniSuper Management Pty Ltd3,590$3.35M0.02%+3,590New
Nordea Investment Management AB3,611$3.40M0.00%−47,682−93.0%Reduced
The PNC Financial Services Group, Inc.3,689$3.44M0.00%−1,395−27.4%Reduced
Quadrant Capital Group LLC3,703$3.46M0.10%−47−1.3%Reduced
Integrated Wealth Concepts LLC3,705$3.46M0.04%−740−16.6%Reduced
Marietta Investment Partners LLC3,749$3.50M0.69%+390+11.6%Added
Rockefeller Capital Management L.P.3,809$3.56M0.01%−1,882−33.1%Reduced
Farther Finance Advisors, LLC3,847$3.59M0.04%+1,922+99.8%Added
Quantbot Technologies LP3,939$3.68M0.12%+3,939New
Meeder Asset Management Inc3,940$3.68M0.20%+354+9.9%Added
Eurizon Capital SGR S.p.A.3,962$3.70M0.01%+3,962New
Oregon Public Employees Retirement Fund4,000$3.73M0.05%−3,081−43.5%Reduced
M&T Bank Corp4,085$3.81M0.01%−39−0.9%Reduced
Hennion & Walsh Asset Management, Inc.4,109$3.83M0.13%+475+13.1%Added
Triasima Portfolio Management inc.4,119$3.84M0.58%+1,220+42.1%Added
NEOS Investment Management LLC4,143$3.87M0.02%+4,143New