COMFORT SYS USA INC (FIX)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
Institutions report 32,708,869 shares against 35,194,329 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $6.7B | 3,397,683 | 0.10% | 8q | -3.3%-$228.4M |
| VANGUARD CAPITAL MANAGEMENT LLC | $4.6B | 2,297,509 | 0.10% | 2q | +0.5%+$22.9M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $3.7B | 1,866,170 | 0.17% | 2q | -0.8%-$29.8M |
| FMR LLC | $3.3B | 1,659,799 | 0.14% | 31q | +14.5%+$416.8M |
| STATE STREET CORP | $3.0B | 1,537,139 | 0.09% | 31q | +4.4%+$129.3M |
| GEODE CAPITAL MANAGEMENT, LLC | $2.3B | 1,151,350 | 0.12% | 31q | -7.0%-$173.2M |
| AQR CAPITAL MANAGEMENT LLC | $2.1B | 1,059,017 | 0.73% | 31q | -5.1%-$112.6M |
| JPMORGAN CHASE & CO | $1.6B | 838,417 | 0.09% | 31q | -5.8%-$100.3M |
| Capital World Investors | $1.4B | 720,244 | 0.17% | 22q | -16.8%-$288.4M |
| Invesco Ltd. | $1.3B | 658,314 | 0.10% | 31q | +8.5%+$102.5M |
| NORGES BANK | $934.6M | 471,564 | 0.09% | 32q | -6.3%-$62.6M |
| MORGAN STANLEY | $852.4M | 430,085 | 0.05% | 35q | -6.5%-$59.6M |
| FIRST TRUST ADVISORS LP | $743.4M | 375,090 | 0.44% | 31q | -9.8%-$80.9M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $709.0M incl. $652.9M options CALL+PUT | 28,310 | 0.06% | 31q | +215.5%+$484.3M |
| WESTFIELD CAPITAL MANAGEMENT CO LP | $704.5M | 355,433 | 2.30% | 11q | -42.8%-$526.2M |
| FEDERATED HERMES, INC. | $676.8M | 341,485 | 0.97% | 31q | +27.9%+$147.6M |
| NORTHERN TRUST CORP | $675.8M | 340,992 | 0.08% | 31q | +3.6%+$23.6M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $643.5M | 324,671 | 0.06% | 31q | +101.4%+$324.1M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $590.3M | 297,845 | 0.08% | 31q | +3.5%+$20.0M |
| Amundi | $580.5M | 292,904 | 0.14% | 9q | +114.1%+$309.3M |
| DIMENSIONAL FUND ADVISORS LP | $565.7M | 285,445 | 0.10% | 31q | +2.0%+$10.9M |
| GOLDMAN SACHS GROUP INC | $531.6M | 268,240 | 0.05% | 31q | +9.9%+$47.9M |
| CITADEL ADVISORS LLC | $531.5M incl. $438.6M options CALL+PUT | 46,859 | 0.06% | 31q | +92.9%+$255.9M |
| Value Aligned Research Advisors, LLC | $482.8M | 243,607 | 1.20% | 4q | +14.0%+$59.4M |
| JANE STREET GROUP, LLC | $481.7M incl. $475.5M options CALL+PUT | 3,136 | 0.04% | 17q | -9.4%-$50.2M |
| DEUTSCHE BANK AG\ | $443.8M | 223,896 | 0.13% | 34q | -7.0%-$33.5M |
| FRANKLIN RESOURCES INC | $441.9M | 222,969 | 0.10% | 13q | +9.6%+$38.8M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $440.0M | 220,776 | 0.14% | 2q | +96731.6%+$439.6M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $439.4M | 221,703 | 0.19% | 10q | -12.4%-$62.0M |
| BAILLIE GIFFORD & CO | $421.5M | 212,655 | 0.38% | 12q | -5.5%-$24.7M |
| LORD, ABBETT & CO. LLC | $414.8M | 209,302 | 1.19% | 28q | -11.9%-$56.2M |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | $412.2M | 207,953 | 0.32% | 9q | +144.7%+$243.7M |
| Artisan Partners Limited Partnership | $400.6M | 202,113 | 0.64% | 5q | -2.9%-$12.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $400.2M | 201,945 | 0.07% | 31q | +38.3%+$110.9M |
| VANGUARD FIDUCIARY TRUST CO | $400.2M | 201,937 | 0.09% | 2q | -0.5%-$2.0M |
| Legal & General Group Plc | $400.1M | 201,870 | 0.08% | 31q | +31.3%+$95.3M |
| Allianz Asset Management GmbH | $387.6M incl. $15.1M options CALL+PUT | 187,971 | 0.31% | 14q | +57.4%+$141.3M |
| UBS Group AG | $381.1M | 192,295 | 0.05% | 31q | +0.9%+$3.5M |
| Point72 Asset Management, L.P. | $373.3M incl. $17.0M options CALL+PUT | 179,727 | 0.41% | 4q | -18.0%-$82.0M |
| Bank of New York Mellon Corp | $370.5M | 186,926 | 0.06% | 31q | -14.3%-$62.0M |
| ROYAL BANK OF CANADA | $339.3M | 171,195 | 0.05% | 31q | +17.1%+$49.5M |
| AMERICAN CENTURY COMPANIES INC | $322.8M | 162,875 | 0.14% | 24q | +218.6%+$221.5M |
| IMC-Chicago, LLC | $321.4M incl. $302.8M options CALL+PUT | 9,346 | 0.08% | 4q | HELD |
| Nuveen, LLC | $314.9M | 158,900 | 0.08% | 6q | -15.7%-$58.6M |
| JACOBS LEVY EQUITY MANAGEMENT, INC | $287.0M | 144,823 | 1.03% | 7q | +50.5%+$96.3M |
| WCM INVESTMENT MANAGEMENT, LLC | $282.4M | 144,923 | 0.51% | 9q | +24.2%+$55.0M |
| Capital International Investors | $280.2M | 141,392 | 0.06% | 14q | -63.9%-$496.4M |
| ROYAL LONDON ASSET MANAGEMENT LTD | $279.5M | 141,047 | 0.52% | 14q | +2.0%+$5.5M |
| VOYA INVESTMENT MANAGEMENT LLC | $273.4M | 138,257 | 0.24% | 31q | +13.7%+$32.9M |
| FULLER & THALER ASSET MANAGEMENT, INC. | $259.3M | 130,833 | 0.71% | 31q | -46.0%-$220.7M |
| RAYMOND JAMES FINANCIAL INC | $249.4M | 125,815 | 0.07% | 7q | -6.8%-$18.2M |
| Temasek Holdings (Private) Ltd | $246.6M | 124,436 | 0.66% | 3q | +31.9%+$59.6M |
| Caisse de depot et placement du Quebec | $243.8M | 123,032 | 0.35% | 8q | +54.0%+$85.5M |
| Evercore Wealth Management, LLC | $222.8M | 112,392 | 3.15% | 6q | -16.3%-$43.4M |
| AMERIPRISE FINANCIAL INC | $221.0M | 111,534 | 0.04% | 31q | -24.3%-$70.9M |
| D. E. Shaw & Co., Inc. | $218.9M incl. $85.8M options CALL+PUT | 67,126 | 0.10% | 31q | -1.0%-$2.1M |
| AMF Tjanstepension AB | $217.2M | 109,590 | 1.29% | 4q | HELD |
| WELLINGTON MANAGEMENT GROUP LLP | $208.1M | 104,995 | 0.04% | 16q | +447.6%+$170.1M |
| WELLS FARGO & COMPANY/MN | $204.3M | 103,077 | 0.03% | 31q | +75.7%+$88.0M |
| Swiss National Bank | $196.7M | 99,250 | 0.10% | 31q | -4.1%-$8.4M |
| Castle Hook Partners LP | $195.2M | 98,482 | 0.89% | 4q | -52.9%-$218.9M |
| BANK OF AMERICA CORP /DE/ | $194.2M | 97,968 | 0.01% | 31q | -24.1%-$61.6M |
| Capital Research Global Investors | $190.2M | 95,976 | 0.03% | 21q | -37.5%-$114.3M |
| Russell Investments Group, Ltd. | $189.6M | 95,718 | 0.17% | 31q | -4.2%-$8.3M |
| Jupiter Topco LLC | $186.1M | 93,950 | 0.08% | new | FIRST |
| Arax Advisory Partners | $181.7M | 91,674 | 1.20% | 9q | +16659.4%+$180.6M |
| Zurcher Kantonalbank (Zurich Cantonalbank) | $172.2M | 86,899 | 0.33% | 31q | -23.9%-$54.2M |
| Mitsubishi UFJ Asset Management Co., Ltd. | $170.9M | 86,222 | 0.09% | 12q | +8.3%+$13.2M |
| AustralianSuper Pty Ltd | $170.8M | 86,175 | 0.74% | 3q | +81.5%+$76.7M |
| Sumitomo Mitsui Trust Group, Inc. | $168.5M | 85,034 | 0.10% | 8q | +3.5%+$5.7M |
| PRINCIPAL FINANCIAL GROUP INC | $168.2M | 84,870 | 0.08% | 31q | -16.9%-$34.2M |
| BARCLAYS PLC | $164.6M | 83,056 | 0.03% | 31q | -19.3%-$39.5M |
| KBC Group NV | $161.6M | 81,518 | 0.35% | 31q | -3.4%-$5.7M |
| PANAGORA ASSET MANAGEMENT INC | $159.5M | 80,479 | 0.49% | 31q | +107.7%+$82.7M |
| Tidal Investments LLC | $154.7M incl. $79.3M options PUT | 38,036 | 0.27% | 14q | +2.2%+$3.4M |
| California Public Employees Retirement System | $152.4M | 76,914 | 0.09% | 14q | -1.5%-$2.4M |
| Vanguard Global Advisers, LLC | $151.7M | 76,547 | 0.07% | 2q | -1.7%-$2.6M |
| RENAISSANCE TECHNOLOGIES LLC | $150.9M | 76,160 | 0.21% | 11q | +34.4%+$38.6M |
| TimesSquare Capital Management, LLC | $146.3M | 73,834 | 2.15% | 11q | HELD |
| CITIGROUP INC | $146.2M | 73,764 | 0.05% | 31q | +147.6%+$87.2M |
| HSBC HOLDINGS PLC | $141.9M | 71,668 | 0.06% | 15q | +5.2%+$7.0M |
| IEQ CAPITAL, LLC | $140.8M | 71,032 | 0.65% | 8q | -21.0%-$37.3M |
| Jain Global LLC | $136.2M CALL+PUT | options only | 0.54% | 3q | OPTIONS |
| VANGUARD ASSET MANAGEMENT, Ltd | $135.4M | 68,307 | 0.09% | 2q | +13.5%+$16.1M |
| National Pension Service | $134.0M | 67,589 | 0.09% | 3q | -5.8%-$8.2M |
| BNP PARIBAS FINANCIAL MARKETS | $133.6M | 67,390 | 0.05% | 31q | +34.0%+$33.9M |
| RHUMBLINE ADVISERS | $130.7M | 65,942 | 0.10% | 31q | -1.0%-$1.3M |
| Clearbridge Investments, LLC | $129.6M | 65,366 | 0.11% | 7q | -59.1%-$187.5M |
| Allspring Global Investments Holdings, LLC | $126.9M | 68,056 | 0.19% | 3q | -45.6%-$106.2M |
| ENVESTNET ASSET MANAGEMENT INC | $126.6M | 63,900 | 0.03% | 31q | -18.4%-$28.6M |
| JENNISON ASSOCIATES LLC | $125.8M | 63,477 | 0.08% | 9q | +112.4%+$66.6M |
| Assenagon Asset Management S.A. | $122.9M | 62,026 | 0.08% | 15q | +309.2%+$92.9M |
| LAZARD ASSET MANAGEMENT LLC | $122.6M | 61,863 | 0.19% | 19q | -7.3%-$9.6M |
| VICTORY CAPITAL MANAGEMENT INC | $121.8M | 61,448 | 0.07% | 31q | -4.1%-$5.2M |
| PRUDENTIAL FINANCIAL INC | $119.9M | 60,477 | 0.13% | 34q | +77.8%+$52.4M |
| Man Group plc | $106.9M | 53,961 | 0.17% | 31q | -6.7%-$7.7M |
| Pictet Asset Management Holding SA | $106.9M | 53,954 | 0.10% | 12q | +85.2%+$49.2M |
| Polar Capital Holdings Plc | $105.6M | 53,295 | 0.25% | 3q | +14.6%+$13.5M |
| SCHRODER INVESTMENT MANAGEMENT GROUP | $105.3M | 53,119 | 0.07% | 7q | +15.9%+$14.4M |
| Bank Julius Baer & Co. Ltd, Zurich | $103.7M | 52,483 | 0.27% | 3q | +1001.0%+$94.3M |
Showing the largest 100 of 1,365 reported holders. The count of 1,364 above leaves out 1 position whose reported value failed our price check; it is listed here as filed.
Q2 2026 in brief
In Q2 2026, 1,364 managers that file Form 13F reported holding Comfort Sys Usa Inc (FIX), $67.2B in all, or about 92% of the shares outstanding. 247 managers opened a position and 94 sold out completely, against 1,211 holders the quarter before. Largest holders: Blackrock, Inc., Vanguard Capital Management Llc and Vanguard Portfolio Management Llc. Largest new positions: Coatue Management Llc ($35.3M), Zevenbergen Capital Investments Llc ($28.6M) and Rh Tailwind Management, Llc ($23.8M).
Q2 2026 is the latest quarter whose 13F deadline has passed. A 13F shows long US stock positions at quarter end, filed up to 45 days later; an adviser and a sub-adviser can both report the same shares.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-22 | 2026-10-16 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-26 | Lane Brian E. | CHIEF EXECUTIVE OFF. | Sold | 16,024 | $25.8M |
| 2026-06-24 | MYERS FRANKLIN | Director | Sold | 6,700 | $13.1M |
| 2026-05-08 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Sold | 4,000 | $7.8M |
| 2026-08-11 | MYERS FRANKLIN | Director | Sold | 4,000 | $6.8M |
| 2026-08-10 | MYERS FRANKLIN | Director | Sold | 3,500 | $5.9M |
| 2026-08-17 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Sold | 2,554 | $4.7M |
| 2026-05-11 | Shaeff Julie | CHIEF ACCOUNTING OFFICER | Sold | 1,123 | $2.2M |
| 2026-05-11 | GEORGE WILLIAM III | CHIEF FINANCIAL OFFICER | Sold | 1,000 | $2.0M |
| 2026-05-27 | Hardy Rhoman J | Director | Sold | 342 | $649.8K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 412 | $2.5B | 1,449,497 | 38 | 136 | 164 | 4.5% |
| Q2 2026 | 1,364 | $67.2B | 32,708,869 | 237 | 492 | 480 | 3.8% |
| Q1 2026 | 1,211 | $46.2B | 32,525,748 | 231 | 437 | 385 | 3.4% |
| Q4 2025 | 1,048 | $32.0B | 33,673,515 | 215 | 347 | 330 | 1.8% |
| Q3 2025 | 892 | $28.6B | 34,259,049 | 207 | 272 | 299 | 1.3% |
| Q2 2025 | 759 | $18.3B | 33,913,513 | 175 | 255 | 221 | 0.8% |
| Q1 2025 | 637 | $11.1B | 34,076,297 | 97 | 266 | 191 | 1.0% |
| Q4 2024 | 670 | $14.5B | 33,966,642 | 100 | 215 | 227 | 0.8% |
| Q3 2024 | 595 | $13.2B | 33,544,685 | 103 | 196 | 207 | 1.1% |
| Q2 2024 | 556 | $10.7B | 35,029,793 | 103 | 165 | 203 | 0.8% |
| Q1 2024 | 509 | $11.7B | 36,324,155 | 101 | 120 | 218 | 1.2% |
| Q4 2023 | 448 | $7.5B | 36,247,427 | 78 | 126 | 177 | 0.3% |
| Q3 2023 | 401 | $6.0B | 35,334,479 | 46 | 126 | 167 | 0.4% |
| Q2 2023 | 378 | $5.7B | 34,610,913 | 58 | 114 | 145 | 0.3% |
| Q1 2023 | 349 | $5.2B | 35,484,692 | 53 | 120 | 128 | 0.1% |
| Q4 2022 | 338 | $4.0B | 34,665,798 | 57 | 96 | 134 | 0.1% |
| Q3 2022 | 286 | $11.2B | 114,557,802 | 38 | 89 | 109 | 0.0% |
| Q2 2022 | 268 | $9.5B | 114,504,399 | 29 | 71 | 112 | 0.1% |
| Q1 2022 | 272 | $9.6B | 107,223,477 | 26 | 94 | 91 | 0.0% |
| Q4 2021 | 286 | $5.5B | 55,536,628 | 37 | 76 | 97 | 0.2% |
| Q3 2021 | 265 | $4.0B | 55,533,378 | 23 | 82 | 88 | 0.1% |
| Q2 2021 | 278 | $4.4B | 56,059,428 | 47 | 80 | 105 | 0.1% |
| Q1 2021 | 245 | $5.1B | 67,645,404 | 36 | 61 | 99 | 0.1% |
| Q4 2020 | 243 | $3.1B | 58,009,664 | 36 | 66 | 94 | 0.1% |
| Q3 2020 | 228 | $3.1B | 60,831,040 | 42 | 60 | 91 | 0.1% |
| Q2 2020 | 211 | $2.4B | 59,882,760 | 29 | 71 | 78 | 0.0% |
| Q1 2020 | 215 | $2.2B | 61,446,000 | 30 | 74 | 65 | 0.1% |
| Q4 2019 | 231 | $2.6B | 52,190,778 | 37 | 65 | 88 | 0.1% |
| Q3 2019 | 214 | $2.3B | 51,430,433 | 24 | 70 | 79 | 0.1% |
| Q2 2019 | 237 | $2.6B | 51,374,278 | 24 | 79 | 84 | 0.1% |
| Q1 2019 | 254 | $3.0B | 57,493,027 | 33 | 79 | 95 | 0.1% |
| Q4 2018 | 245 | $2.5B | 57,439,408 | 6 | 3 | 5 | 0.2% |
