COMFORT SYSTEMS USA INC (FIX) Institutional Shareholders
COMFORT SYSTEMS USA INC (FIX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $43.60B in FIX holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of FIX tracked by InsiderSet, reporting ownership valued at approximately $4.84B in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $6.08B, representing an estimated gain of +25.43% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 47% of the total disclosed FIX value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in COMFORT SYSTEMS USA INC (FIX).
This page ranks the largest institutional FIX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
1,257
Total Reported Value
$43.60B
Largest Holder
Blackrock, Inc.
Largest Position
$4.84B
Insider Transactions (90d)
3
Latest Filing Quarter
Q2 2026
New Institutional Positions
76
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.08% | 3,512,927 | $4,844,290,812 | $6,076,274,703 | +$1,231,983,891 | +25.43% | |
| Vanguard Capital Management Llc | 0.08% | 2,285,949 | $3,152,300,811 | $3,953,983,126 | +$801,682,315 | +25.43% | |
| Vanguard Portfolio Management Llc | 0.14% | 1,881,184 | $2,594,133,924 | $3,253,865,153 | +$659,731,229 | +25.43% | |
| State Street Corp | 0.07% | 1,471,879 | $2,029,706,422 | $2,545,894,388 | +$516,187,966 | +25.43% | |
| Fmr Llc | 0.11% | 1,449,517 | $1,998,870,948 | $2,507,215,060 | +$508,344,112 | +25.43% | |
| Geode Capital Management, Llc | 0.11% | 1,238,619 | $1,711,752,025 | $2,142,426,898 | +$430,674,873 | +25.16% | |
| Aqr Capital Management Llc | 0.68% | 1,116,173 | $1,490,024,494 | $1,930,633,276 | +$440,608,782 | +29.57% | |
| Capital World Investors | 0.16% | 865,780 | $1,193,901,962 | $1,497,531,008 | +$303,629,046 | +25.43% | |
| Westfield Capital Management Co Lp | 3.59% | 620,915 | $856,235,416 | $1,073,990,466 | +$217,755,050 | +25.43% | |
| Invesco Ltd. | 0.13% | 606,580 | $836,467,080 | $1,049,195,360 | +$212,728,280 | +25.43% | |
| Morgan Stanley | 0.04% | 460,135 | $634,522,928 | $795,890,908 | +$161,367,980 | +25.43% | |
| First Trust Advisors Lp | 0.41% | 415,886 | $573,501,909 | $719,353,855 | +$145,851,946 | +25.43% | |
| Capital International Investors | 0.13% | 391,831 | $540,331,031 | $677,746,162 | +$137,415,131 | +25.43% | |
| Northern Trust Corp | 0.06% | 329,098 | $453,822,851 | $569,237,520 | +$115,414,669 | +25.43% | |
| Massachusetts Financial Services Co | 0.14% | 220,776 | $440,012,033 | $381,874,039 | -$58,137,994 | -13.21% | |
| Charles Schwab Investment Management Inc | 0.06% | 287,735 | $396,783,688 | $497,692,352 | +$100,908,664 | +25.43% | |
| Dimensional Fund Advisors Lp | 0.08% | 279,947 | $385,799,542 | $484,221,526 | +$98,421,984 | +25.51% | |
| Federated Hermes, Inc. | 0.60% | 267,030 | $368,231,700 | $461,879,121 | +$93,647,421 | +25.43% | |
| Arrowstreet Capital, Limited Partnership | 0.19% | 252,979 | $348,855,511 | $437,575,247 | +$88,719,736 | +25.43% | |
| Hood River Capital Management Llc | 3.45% | 249,385 | $343,899,421 | $431,358,741 | +$87,459,320 | +25.43% | |
| Goldman Sachs Group Inc | 0.04% | 244,047 | $336,538,976 | $422,125,655 | +$85,586,679 | +25.43% | |
| Fuller & Thaler Asset Management, Inc. | 1.12% | 242,196 | $333,986,407 | $418,923,999 | +$84,937,592 | +25.43% | |
| Deutsche Bank Ag\ | 0.11% | 240,791 | $332,048,380 | $416,493,785 | +$84,445,405 | +25.43% | |
| Baillie Gifford & Co | 0.32% | 225,118 | $310,435,471 | $389,384,353 | +$78,948,882 | +25.43% | |
| Storebrand Asset Management As | 0.10% | 3,399,662 | $303,075,038 | $5,880,361,365 | +$5,577,286,327 | +1840.23% | |
| Point72 Asset Management, L.P. | 0.53% | 219,232 | $302,318,736 | $379,203,398 | +$76,884,662 | +25.43% | |
| Bank Of New York Mellon Corp | 0.06% | 218,195 | $300,888,951 | $377,409,710 | +$76,520,759 | +25.43% | |
| Value Aligned Research Advisors, Llc | 3.49% | 213,637 | $294,603,287 | $369,525,783 | +$74,922,496 | +25.43% | |
| Castle Hook Partners Lp | 5.82% | 208,906 | $288,079,285 | $361,342,619 | +$73,263,334 | +25.43% | |
| Artisan Partners Limited Partnership | 0.47% | 208,177 | $287,074,473 | $360,081,675 | +$73,007,202 | +25.43% | |
| Franklin Resources Inc | 0.07% | 203,388 | $280,470,018 | $351,798,190 | +$71,328,172 | +25.43% | |
| Vanguard Fiduciary Trust Co | 0.07% | 202,952 | $279,868,779 | $351,044,045 | +$71,175,266 | +25.43% | |
| Ubs Group Ag | 0.05% | 190,544 | $262,758,271 | $329,582,051 | +$66,823,780 | +25.43% | |
| Nuveen, Llc | 0.07% | 188,471 | $259,899,625 | $325,996,404 | +$66,096,779 | +25.43% | |
| Clearbridge Investments, Llc | 0.19% | 159,961 | $220,584,619 | $276,682,942 | +$56,098,323 | +25.43% | |
| Legal & General Group Plc | 0.05% | 153,779 | $212,059,710 | $265,989,999 | +$53,930,289 | +25.43% | |
| Capital Research Global Investors | 0.03% | 153,639 | $211,866,645 | $265,747,842 | +$53,881,197 | +25.43% | |
| Ameriprise Financial Inc | 0.05% | 147,298 | $203,121,619 | $254,779,878 | +$51,658,259 | +25.43% | |
| Royal Bank Of Canada | 0.04% | 146,195 | $201,601,000 | $252,872,030 | +$51,271,030 | +25.43% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.04% | 146,007 | $201,342,193 | $252,546,848 | +$51,204,655 | +25.43% | |
| Royal London Asset Management Ltd | 0.40% | 138,256 | $190,653,641 | $239,140,021 | +$48,486,380 | +25.43% | |
| Amundi | 0.05% | 136,835 | $188,694,097 | $236,682,131 | +$47,988,034 | +25.43% | |
| Evercore Wealth Management, Llc | 2.91% | 134,308 | $185,209,389 | $232,311,205 | +$47,101,816 | +25.43% | |
| Raymond James Financial Inc | 0.06% | 135,009 | $181,267,976 | $233,523,717 | +$52,255,741 | +28.83% | |
| Allspring Global Investments Holdings, Llc | 0.30% | 124,989 | $178,549,287 | $216,192,223 | +$37,642,936 | +21.08% | |
| Bank Of America Corp | 0.01% | 129,056 | $177,966,458 | $223,226,873 | +$45,260,415 | +25.43% | |
| Sumitomo Mitsui Trust Group, Inc. | 0.10% | 85,034 | $168,533,136 | $147,082,459 | -$21,450,677 | -12.73% | |
| Voya Investment Management Llc | 0.17% | 121,608 | $167,223,340 | $210,344,142 | +$43,120,802 | +25.79% | |
| Allianz Asset Management Gmbh | 0.19% | 119,449 | $164,718,975 | $206,609,741 | +$41,890,766 | +25.43% | |
| Janus Henderson Group Plc | 0.08% | 115,378 | $159,079,239 | $199,568,173 | +$40,488,934 | +25.45% |
Frequently asked questions about FIX
Who owns the most FIX stock?
The largest holders of FIX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for COMFORT SYSTEMS USA INC (FIX).
Is FIX widely held by superinvestors?
Many widely followed stocks like FIX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly FIX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.