Comfort Systems USA Inc

FIX

Exchange: NYSE
Industry: Electrical Work
SEC CIK: 0001035983

SEC filings (opens in a new tab)

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, Q3 2026

Institutional positions in Comfort Systems USA Inc as of Sep 30, 2026. 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

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Institutional holders: 10; +2 vs. Q2 2026
Shares held: 52.2K; +46.0K (+747.1%) vs. Q2 2026
Total value: $8.86M; −$3.35M (−27.4%) vs. Q2 2026
New holders: 2; 3 more added
Sold out: 0; 3 more reduced

1,349 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: 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 holders

Value held

Institutions holding FIX and their total value by quarter
Quarter	Holders	Value
Q2 2026	1,357	$64.6B
Q1 2026	1,206	$44.6B
Q4 2025	1,043	$31.1B
Q3 2025	888	$27.5B
Q2 2025	755	$18.1B
Q1 2025	632	$10.9B
Q4 2024	665	$14.4B
Q3 2024	591	$13.1B
Q2 2024	555	$10.5B
Q1 2024	505	$11.0B
Q4 2023	447	$7.16B
Q3 2023	400	$5.97B
Q2 2023	378	$5.62B
Q1 2023	348	$5.03B
Q4 2022	337	$3.92B
Q3 2022	299	$3.35B
Q2 2022	277	$2.88B
Q1 2022	280	$3.11B
Q4 2021	291	$3.41B
Q3 2021	269	$2.43B
Q2 2021	282	$2.67B
Q1 2021	252	$2.57B

Institutions, Q3 2026

Shares, value and share of portfolio for each institution holding Comfort Systems USA Inc; share changes are against Q2 2026.

Institutions holding FIX in Q3 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
Polar Capital Holdings Plc	–	–	–	–	Not filed
Schroder Investment Management Group	–	–	–	–	Not filed
Bank Julius Baer & Co. Ltd, Zurich	–	–	–	–	Not filed
Bank of Montreal	–	–	–	–	Not filed
California State Teachers Retirement System	–	–	–	–	Not filed
LPL Financial LLC	–	–	–	–	Not filed
Smith Group Asset Management, LLC	–	–	–	–	Not filed
Macquarie Group Ltd	–	–	–	–	Not filed
Nomura Asset Management International Inc.	–	–	–	–	Not filed
Neuberger Berman Group LLC	–	–	–	–	Not filed
Bridgewater Associates, LP	–	–	–	–	Not filed
Storebrand Asset Management AS	–	–	–	–	Not filed
Citadel Advisors LLC	–	–	–	–	Not filed
Acadian Asset Management LLC	–	–	–	–	Not filed
Korea Investment CORP	–	–	–	–	Not filed
Gotham Asset Management, LLC	–	–	–	–	Not filed
Kayne Anderson Rudnick Investment Management LLC	–	–	–	–	Not filed
Mariner, LLC	–	–	–	–	Not filed
Fiera Capital Corp	–	–	–	–	Not filed
GW&K Investment Management, LLC	–	–	–	–	Not filed
Nordea Investment Management AB	–	–	–	–	Not filed
Colony Group, LLC	–	–	–	–	Not filed
Balyasny Asset Management LLC	–	–	–	–	Not filed
Cerity Partners LLC	–	–	–	–	Not filed
Los Angeles Capital Management LLC	–	–	–	–	Not filed
Vontobel Holding Ltd.	–	–	–	–	Not filed
Toroso Investments, LLC	–	–	–	–	Not filed
SEI Investments Co	–	–	–	–	Not filed
CIBC World Markets Inc.	–	–	–	–	Not filed
Merewether Investment Management, LP	–	–	–	–	Not filed
Millennium Management LLC	–	–	–	–	Not filed
Robeco Institutional Asset Management B.V.	–	–	–	–	Not filed
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	–	–	–	–	Not filed
Universal- Beteiligungs- und Servicegesellschaft mbH	–	–	–	–	Not filed
Creative Planning	–	–	–	–	Not filed
HRT Financial LP	–	–	–	–	Not filed
FIL Ltd	–	–	–	–	Not filed
Virginia Retirement Systems Et Al	–	–	–	–	Not filed
BI Asset Management Fondsmaeglerselskab A/S	–	–	–	–	Not filed
Canada Pension Plan Investment Board	–	–	–	–	Not filed
New York State Common Retirement Fund	–	–	–	–	Not filed
State Board of Administration of Florida Retirement System	–	–	–	–	Not filed
Danske Bank A/S	–	–	–	–	Not filed
Aviva PLC	–	–	–	–	Not filed
Driehaus Capital Management LLC	–	–	–	–	Not filed
Adage Capital Partners GP, L.L.C.	–	–	–	–	Not filed
Assenagon Asset Management S.A.	–	–	–	–	Not filed
Munro Partners	–	–	–	–	Not filed
SG Americas Securities, LLC	–	–	–	–	Not filed
Qube Research & Technologies Ltd	–	–	–	–	Not filed
PFA Pension, Forsikringsaktieselskab	–	–	–	–	Not filed
New York State Teachers Retirement System	–	–	–	–	Not filed
Ensign Peak Advisors, Inc	–	–	–	–	Not filed
Empowered Funds, LLC	–	–	–	–	Not filed
Alliancebernstein L.P.	–	–	–	–	Not filed
Susquehanna International Group, LLP	–	–	–	–	Not filed
Cetera Investment Advisers	–	–	–	–	Not filed
EULAV Asset Management	–	–	–	–	Not filed
Mitsubishi UFJ Trust & Banking Corp	–	–	–	–	Not filed
Teacher Retirement System of Texas	–	–	–	–	Not filed
Congress Asset Management Co	–	–	–	–	Not filed
Vinva Investment Management Ltd	–	–	–	–	Not filed
TD Asset Management Inc	–	–	–	–	Not filed
National Bank of Canada	–	–	–	–	Not filed
Asset Management One Co.,Ltd.	–	–	–	–	Not filed
Worldquant Millennium Advisors LLC	–	–	–	–	Not filed
Manufacturers Life Insurance Company, The	–	–	–	–	Not filed
Candriam Luxembourg S.C.A.	–	–	–	–	Not filed
Aware Super Pty Ltd as trustee of Aware Super	–	–	–	–	Not filed
Stifel Financial Corp	–	–	–	–	Not filed
Handelsbanken Fonder AB	–	–	–	–	Not filed
Mercer Global Advisors Inc	–	–	–	–	Not filed
State of Wisconsin Investment Board	–	–	–	–	Not filed
SEB Asset Management AB	–	–	–	–	Not filed
Summit Partners Public Asset Management, LLC	–	–	–	–	Not filed
Goodlander Investment Management, LLC	–	–	–	–	Not filed
Wealth Enhancement Advisory Services, LLC	–	–	–	–	Not filed
Mackenzie Financial Corp	–	–	–	–	Not filed
Navellier & Associates Inc	–	–	–	–	Not filed
Renaissance Group LLC	–	–	–	–	Not filed
Zurich Insurance Group Ltd	–	–	–	–	Not filed
Artemis Investment Management LLP	–	–	–	–	Not filed
Fred Alger Management, LLC	–	–	–	–	Not filed
Bessemer Group Inc	–	–	–	–	Not filed
Captrust Financial Advisors	–	–	–	–	Not filed
Great West Life Assurance Co	–	–	–	–	Not filed
Wealth High Governance Asset Management Ltda.	–	–	–	–	Not filed
Vanguard Investments Australia, Ltd.	–	–	–	–	Not filed
Truist Financial Corp	–	–	–	–	Not filed
KLP Kapitalforvaltning AS	–	–	–	–	Not filed
Coatue Management LLCSuperinvestorCoatue Management	–	–	–	–	Not filed
Mirae Asset Global Investments Co., Ltd.	–	–	–	–	Not filed
Eventide Asset Management, LLC	–	–	–	–	Not filed
Chevy Chase Trust Holdings, Inc.	–	–	–	–	Not filed
Mediolanum International Funds Ltd	–	–	–	–	Not filed
Treasurer of the State of North Carolina	–	–	–	–	Not filed
Swiss Life Asset Management Ltd	–	–	–	–	Not filed
Peterson Wealth Services	–	–	–	–	Not filed
Credit Agricole S A	–	–	–	–	Not filed
STRS Ohio	–	–	–	–	Not filed