Companies › FIX
COMFORT SYS USA INC (FIX)
Institutional ownership, SEC filings and insider activity
Sector: Industry · SEC CIK 0001035983 · EDGAR filings · Updated 2026-07-23
COMFORT SYS USA INC (FIX) has reported institutional ownership of 92.2%, with 1,189 institutional managers holding positions valued at $44.5B per the latest 13F reporting period.
Filings this week (2)
- 2026-07-23 — Quarterly report (10-Q) filed
- 2026-07-23 — Current report (8-K) filed
Every filing links to the official SEC document. Real-time filing alerts for this company are available inside the app.
Latest updates
- 2026-07-09 — Initial insider ownership filed (Form 3)
- 2026-06-26 — Insider transaction reported (Form 4)
- 2026-06-22 — Current report (8-K) filed
- 2026-05-28 — Insider transaction reported (Form 4)
- 2026-05-22 — Insider transaction reported (Form 4)
- 2026-05-22 — Notice of proposed sale filed (Form 144)
- 2026-05-21 — Current report (8-K) filed
- 2026-05-19 — Insider transaction reported (Form 4)
Institutional ownership overview
According to SEC 13F filings tracked by Sightfile, COMFORT SYS USA INC has 1,189 institutional holders and institutional ownership of 92.2%.
| # | Institution | Reported value | % of tracked total |
|---|---|---|---|
| 1 | BlackRock, Inc. | $4.84B | 10.9% |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | $3.15B | 7.1% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $2.59B | 5.8% |
| 4 | STATE STREET CORP | $2.03B | 4.6% |
| 5 | FMR LLC | $2.00B | 4.5% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | $1.71B | 3.8% |
| 7 | AQR CAPITAL MANAGEMENT LLC | $1.49B | 3.3% |
| 8 | Capital World Investors | $1.19B | 2.7% |
| 9 | JPMORGAN CHASE & CO | $1.13B | 2.5% |
| 10 | WESTFIELD CAPITAL MANAGEMENT CO LP | $856.2M | 1.9% |
Full holder history and quarter-over-quarter changes are available inside the app.
Insider activity
Insiders reported 93 transactions (0 buys, 36 sells) across 17 reporting insiders, with a net reported value of −$127.0M.
Quarterly net insider value, as reported in Form 4 filings.
Related companies
UNITED PARCEL SVC INC CLASS B (UPS) · NORFOLK SOUTHN CORP (NSC) · CANADIAN PACIFIC KAN F (CP) · AMETEK INC NEW (AME) · KEYSIGHT TECHNOLOGIES INC (KEYS) · TERADYNE INC (TER)
See full history, cross-references and alerts on SightfileData sources: SEC EDGAR (filings, 13F, FTD), aggregated by Sightfile. Page updated 2026-07-23.