Comfort Systems USA, Inc. (FIX) Institutional Ownership & Insider Trading

1,346 institutions reported holding Comfort Systems USA, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 30 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-09-30 · read by EquiReason

FIXComfort Systems USA, Inc.Follow FIX — free

Engineering & Construction · Industrials

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Market cap: 40.6B
P/E TTM: 25.1
Dividend yield: 0.3%
52-week: —
Next earnings: 17 Feb, in 116 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

1,346 institutions held 93.3% of the shares. Across filers that reported both quarters, shares held changed -1.0%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	1,346	33	-1.0%	460	203	450	63
Mar 26	1,185	32	-3.2%	412	197	367	46
Dec 25	1,015	33	-3.5%	322	187	308	60
Sep 25	864	34	+2.5%	251	171	280	56
Jun 25	744	34	+0.1%	244	154	201	40
Mar 25	617	33	-0.1%	246	78	177	110
Dec 24	651	34	+0.5%	201	91	210	43
Sep 24	579	33	-6.3%	183	87	192	55

Comfort Systems USA, Inc. — questions

Who owns Comfort Systems USA, Inc. stock?: 1,346 institutions reported Comfort Systems USA, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: BlackRock, Inc. (9.7%), VANGUARD CAPITAL MANAGEMENT LLC (6.6%), VANGUARD PORTFOLIO MANAGEMENT LLC (5.3%).
Are Comfort Systems USA, Inc. insiders buying or selling?: 30 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from Comfort Systems USA, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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