COMFORT SYS USA INC FIX
COM · Common Stock · CUSIP 199908104 · ISIN US1999081045
American HVAC company
- SectorIndustrials
- IndustryElectrical Work
- HeadquartersHouston, TX
- Founded1997
- Websitecomfortsystemsusa.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($2.6m this quarter). Holder counts are more reliable. Shares outstanding: 35.8m as of 2023-07-21, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $163.28. Options: 8 managers hold calls ($15.7m notional), 6 hold puts ($2.7m).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 299 |
| Q4 2022 | 337 |
| Q1 2023 | 350 |
| Q2 2023 | 379 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 164 | 149 |
| Q1 2023 | 176 | 170 |
| Q2 2023 | 176 | 187 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $3.4m | $1.0m | 0.31 |
| Q4 2022 | $3.5m | $1.5m | 0.44 |
| Q1 2023 | $5.9m | $1.1m | 0.18 |
| Q2 2023 | $15.7m | $2.7m | 0.17 |
Biggest buyers
| Invesco Ltd. | Added | +449.1k |
| FULLER & THALER ASSET MANAGEMENT, INC. | Added | +227.3k |
| BlackRock Inc. | Added | +203.6k |
| Capital International Investors | Added | +178.6k |
| Artemis Investment Management LLP | New | +166.5k |
| GOLDMAN SACHS GROUP INC | Added | +114.9k |
| Balyasny Asset Management L.P. | New | +97.1k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +78.8k |
| VANGUARD GROUP INC | Added | +73.2k |
| FEDERATED HERMES, INC. | Added | +69.0k |
Biggest sellers
| FMR LLC | Reduced | -490.0k |
| Capital World Investors | Reduced | -351.0k |
| CITADEL ADVISORS LLC | Reduced | -250.5k |
| ENVESTNET ASSET MANAGEMENT INC | Reduced | -218.7k |
| River Road Asset Management, LLC | Reduced | -197.1k |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -143.4k |
| Handelsbanken Fonder AB | Reduced | -130.0k |
| NORGES BANK | Reduced | -108.5k |
| LORD, ABBETT & CO. LLC | Reduced | -89.7k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -77.2k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $5.1m31.3k shares |
| CITADEL ADVISORS LLC | Added | $4.1m24.9k shares |
| PEAK6 Investments LLC | Added | $3.4m20.7k shares |
| JANE STREET GROUP, LLC | New | $2.0m12.2k shares |
| Cubist Systematic Strategies, LLC | New | $722.5k4.4k shares |
| WOLVERINE TRADING, LLC | Reduced | $216.2k1.3k shares |
| SIMPLEX TRADING, LLC | Added | $131.0k800 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| PEAK6 Investments LLC | Added | $1.1m6.8k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $706.1k4.3k shares |
| CITADEL ADVISORS LLC | Added | $476.2k2.9k shares |
| Cubist Systematic Strategies, LLC | New | $229.9k1.4k shares |
| SIMPLEX TRADING, LLC | Unchanged | $131.0k800 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution -2.5 pts · filed 2026-01-21 | 8.3% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 7.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.4% |
Fell to 5% or below in the last year: FMR LLC (4.1%, 2026-05-06), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC), Capital World Investors (4.7%, 2026-02-13)
Insider purchases and sales in Q2 2023
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 0 | — | 6 | $14.0m | — |
| Q1 2022 | 0 | — | 1 | $267.2k | — |
| Q2 2022 | 0 | — | 3 | $1.9m | — |
| Q3 2022 | 0 | — | 7 | $7.8m | — |
| Q4 2022 | 1 | $571 | 7 | $7.3m | — |
| Q1 2023 | 0 | — | 2 | $796.6k | — |
| Q2 2023 | 0 | — | 1 | $479.8k | $479.8k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2023-06-12 | Skidmore Constance Ellen Director | Sold plan | $479.8k3.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| BlackRock Inc. 0.03% of their portfolio | 6.2m $1.0bn | Added +203.6k |
| VANGUARD GROUP INC 0.02% of their portfolio | 4.3m $700.8m | Added +73.2k |
| Capital World Investors 0.06% of their portfolio | 1.8m $303.4m | Reduced -351.0k |
| Invesco Ltd. 0.05% of their portfolio | 1.3m $208.1m | Added +449.1k |
| STATE STREET CORP 0.01% of their portfolio | 1.2m $203.8m | Added +18.3k |
| DIMENSIONAL FUND ADVISORS LP 0.06% of their portfolio | 1.1m $173.3m | Reduced -143.4k |
| ALLIANCEBERNSTEIN L.P. 0.05% of their portfolio | 748.5k $122.9m | Reduced -58.1k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 685.3k $112.5m | Added +24.1k |
| LORD, ABBETT & CO. LLC 0.19% of their portfolio | 667.7k $109.6m | Reduced -89.7k |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.60% of their portfolio | 646.2k $106.1m | Added +227.3k |
| Nuveen Asset Management, LLC 0.03% of their portfolio | 578.4k $95.0m | Reduced -16.3k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 533.2k $87.5m | Reduced -14.5k |
| GW&K Investment Management, LLC 0.76% of their portfolio | 486.7k $79.9m | Reduced -7.3k |
| Hood River Capital Management LLC 2.31% of their portfolio | 472.8k $77.6m | Added +6.4k |
| FEDERATED HERMES, INC. 0.17% of their portfolio | 416.2k $68.3m | Added +69.0k |
| MORGAN STANLEY 0.01% of their portfolio | 404.1k $66.4m | Added +19.9k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 399.7k $65.6m | Added +3.3k |
| NEUMEIER POMA INVESTMENT COUNSEL LLC 5.98% of their portfolio | 397.8k $65.3m | Reduced -28.3k |
| WESTWOOD HOLDINGS GROUP INC 0.56% of their portfolio | 383.3k $62.9m | Reduced -42.7k |
| NORGES BANK 0.01% of their portfolio | 371.9k $61.1m | Reduced -108.5k |
| PRINCIPAL FINANCIAL GROUP INC 0.04% of their portfolio | 369.6k $60.7m | Reduced -26.4k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 364.6k $59.9m | Reduced -10.1k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 358.6k $58.9m | Reduced -13.3k |
| FMR LLC 0.00% of their portfolio | 354.6k $58.2m | Reduced -490.0k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 321.6k $52.8m | Reduced -28.3k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 1.58% of their portfolio | 305.3k $50.1m | Reduced -9.3k |
| Capital Research Global Investors 0.01% of their portfolio | 298.6k $49.0m | Unchanged |
| GFI Investment Counsel Ltd. 6.84% of their portfolio | 273.8k $45.0m | Added +5.5k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 272.6k $44.8m | Added +78.8k |
| Capital International Investors 0.01% of their portfolio | 270.1k $44.4m | Added +178.6k |
| JANUS HENDERSON GROUP PLC 0.03% of their portfolio | 267.0k $43.8m | Reduced -62.1k |
| Driehaus Capital Management LLC 0.53% of their portfolio | 255.9k $42.0m | Added +4.5k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 246.9k $40.5m | Added +114.9k |
| CONGRESS ASSET MANAGEMENT CO 0.32% of their portfolio | 224.5k $36.9m | Added +10.6k |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.15% of their portfolio | 195.8k $32.2m | Reduced -17.4k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 194.4k $31.9m | Added +22.0k |
| Boston Trust Walden Corp 0.25% of their portfolio | 188.5k $31.0m | Reduced -50.5k |
| COMERICA BANK 0.00% of their portfolio | 169.1k $3 | First filing |
| VICTORY CAPITAL MANAGEMENT INC 0.03% of their portfolio | 168.3k $27.6m | Reduced -45.5k |
| Artemis Investment Management LLP 0.35% of their portfolio | 166.5k $27.3m | New |
| PANAGORA ASSET MANAGEMENT INC 0.14% of their portfolio | 147.7k $24.3m | Reduced -9.4k |
| FIRST TRUST ADVISORS LP 0.03% of their portfolio | 146.3k $24.0m | Added +44.5k |
| PUTNAM INVESTMENTS LLC 0.03% of their portfolio | 143.3k $23.5m | Added +37.0k |
| Assenagon Asset Management S.A. 0.09% of their portfolio | 139.6k $22.9m | Reduced -19.9k |
| Robeco Schweiz AG 0.34% of their portfolio | 138.7k $22.8m | Reduced -64.2k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 134.2k $22.0m | Reduced -5.7k |
| NORDEA INVESTMENT MANAGEMENT AB 0.03% of their portfolio | 130.7k $21.7m | Added +4.9k |
| RK Capital Management, LLC 4.58% of their portfolio | 129.8k $21.3m | Added +28.3k |
| STOREBRAND ASSET MANAGEMENT AS 0.10% of their portfolio | 128.7k $21.1m | Reduced -12.6k |
| Tributary Capital Management, LLC 1.89% of their portfolio | 128.1k $21.0m | Reduced -71.8k |
| Legal & General Group Plc 0.01% of their portfolio | 113.2k $18.6m | Added +8.4k |
| River Road Asset Management, LLC 0.23% of their portfolio | 103.4k $17.0m | Reduced -197.1k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 103.3k $17.0m | Reduced -106 |
| Swedbank AB 0.03% of their portfolio | 100.0k $16.4m | Reduced -42.5k |
| Ziegler Capital Management, LLC 0.63% of their portfolio | 99.6k $16.4m | Reduced -12.0k |
| Balyasny Asset Management L.P. 0.04% of their portfolio | 97.1k $15.9m | New |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 92.0k $15.1m | Reduced -218.7k |
| TRUIST FINANCIAL CORP 0.02% of their portfolio | 87.5k $14.4m | Added +373 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 81.1k $13.3m | Added +9.9k |
| Swiss National Bank 0.01% of their portfolio | 77.8k $12.8m | Added +600 |
| SEGALL BRYANT & HAMILL, LLC 0.13% of their portfolio | 77.1k $12.7m | Added +357 |
| Squarepoint Ops LLC 0.06% of their portfolio | 69.5k $11.4m | Added +43.1k |
| Man Group plc 0.03% of their portfolio | 67.7k $11.1m | New |
| BESSEMER GROUP INC 0.02% of their portfolio | 66.5k $10.9m | Added +3.1k |
| RAYMOND JAMES & ASSOCIATES 0.01% of their portfolio | 64.6k $10.6m | Reduced -13.8k |
| Public Sector Pension Investment Board 0.07% of their portfolio | 63.5k $10.4m | Added +594 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 62.6k $10.3m | Added +8.9k |
| CW Advisors, LLC 0.23% of their portfolio | 61.1k $10.0m | Added +2.3k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 59.8k $9.8m | Reduced -413 |
| Lisanti Capital Growth, LLC 1.34% of their portfolio | 58.9k $9.7m | Reduced -11.4k |
| ProShare Advisors LLC 0.03% of their portfolio | 56.9k $9.3m | Added +51.7k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 56.0k $9.2m | Added +3.4k |
| Homestead Advisers Corp 0.24% of their portfolio | 55.7k $9.1m | Reduced -6.2k |
| ROYCE & ASSOCIATES LP 0.08% of their portfolio | 50.9k $8.4m | Reduced -10.8k |
| Moran Wealth Management, LLC 0.31% of their portfolio | 49.7k $8.2m | Reduced -987 |
| PRUDENTIAL FINANCIAL INC 0.01% of their portfolio | 49.7k $4.3m | Reduced -19.4k |
| Premier Fund Managers Ltd 0.33% of their portfolio | 49.3k $8.2m | Reduced -10.0k |
| LAZARD ASSET MANAGEMENT LLC 0.01% of their portfolio | 48.4k $7.9m | Added +456 |
| CREDIT SUISSE AG/ 0.01% of their portfolio | 46.9k $7.7m | Added +3.9k |
| STANSBERRY ASSET MANAGEMENT, LLC 1.38% of their portfolio | 46.0k $7.6m | Reduced -4 |
| NICHOLAS COMPANY, INC. 0.14% of their portfolio | 43.7k $7.2m | Reduced -11.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 43.2k $7.1m | Reduced -1.4k |
| Zurich Insurance Group Ltd/FI 0.07% of their portfolio | 43.0k $7.1m | New |
| TUDOR INVESTMENT CORP ET AL 0.11% of their portfolio | 41.9k $6.9m | Added +32.5k |
| Allspring Global Investments Holdings, LLC 0.01% of their portfolio | 41.8k $6.9m | Reduced -4.8k |
| MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC 0.45% of their portfolio | 41.0k $6.7m | Added +26.0k |
| Divisar Capital Management LLC 1.40% of their portfolio | 40.5k $6.6m | Reduced -5.0k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.05% of their portfolio | 40.4k $6.6m | Added +2.6k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 40.2k $6.6m | Added +5.5k |
| California Public Employees Retirement System 0.01% of their portfolio | 39.5k $6.5m | Added +8.5k |
| Walleye Capital LLC 0.11% of their portfolio | 39.1k $6.4m | New |
| KENNEDY CAPITAL MANAGEMENT LLC 0.14% of their portfolio | 37.3k $6.1m | New |
| Bridge City Capital, LLC 2.89% of their portfolio | 37.2k $6.1m | Reduced -2.2k |
| Global IMC LLC 1.77% of their portfolio | 36.7k $6.0m | Reduced -9 |
| CASTLEARK MANAGEMENT LLC 0.27% of their portfolio | 36.5k $6.0m | Reduced -310 |
| AXA S.A. 0.02% of their portfolio | 36.1k $5.9m | Reduced -1.7k |
| EULAV Asset Management 0.22% of their portfolio | 35.6k $5.8m | Added +4.2k |
| ACADIAN ASSET MANAGEMENT LLC 0.02% of their portfolio | 34.4k $5.6m | Reduced -58.8k |
| Thrivent Financial for Lutherans 0.01% of their portfolio | 34.2k $5.6m | Reduced -1.2k |
| HighTower Advisors, LLC 0.01% of their portfolio | 33.4k $5.4m | Reduced -656 |