Latest Period
Q1 2026
Security Snapshot
COMFORT SYSTEMS USA INC - COMMON STOCK (FIX) Institutional Ownership
CUSIP: 199908104
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
1,187
Shares (Excl. Options)
32,460,560
Price
$1378.99
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- Security type / class
- Equity / COMMON STOCK
- Symbol
- FIX on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 32,460,560
- Total 13F value
- $44,548,007,306
- Portfolio coverage rank
- 0.04%
- Share change
- -1,018,799
- Value change
- -$1,089,676,911
- Number of holders
- 1,187
- Shares outstanding
- 35,354,100
- SEC-reported price per share
- $2034.63
- Insider filing price
- $2034.63
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- FIX - COMFORT SYSTEMS USA INC - COMMON STOCK is tracked under CUSIP 199908104.
- 1187 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 1,034 to 1,187 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $31,075,332,284 to $44,548,007,306.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 1187 institutions filings for Q1 2026.
Security key
199908104
Latest holder period
Q1 2026
13F holders
1,187
13D/G owners
5
CIK / CUSIP context first
Open Q1 2026 holders
FIX full holder history
COMFORT SYSTEMS USA INC SEC filings
COMFORT SYSTEMS USA INC company facts
COMFORT SYSTEMS USA INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 199908104:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
FIX
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 8.3% | -23% | $2,722,408,972 | -$827,736,455 | 2,917,000 | -23% | BlackRock, Inc. | 31 Dec 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC | 7.5% | $3,633,102,750 | 2,634,611 | Vanguard Capital Management | 31 Mar 2026 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.4% | $2,607,913,170 | 1,891,176 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| Capital World Investors | 4.7% | -8% | $1,693,537,589 | -$163,908,117 | 1,640,532 | -8.8% | Capital World Investors | 31 Dec 2025 |
| FMR LLC | 4.1% | -26% | $2,054,242,542 | -$627,110,827 | 1,449,518 | -23% | FMR LLC | 31 Mar 2026 |
As of 31 Mar 2026, 1,187 institutional investors reported holding 32,460,560 shares of COMFORT SYSTEMS USA INC - COMMON STOCK (FIX). This represents 92% of the company’s total 35,354,100 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
57%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9.9% | 3,512,927 | +1.9% | 0.08% | $4,844,290,812 |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.5% | 2,285,949 | 0% | 0.08% | $3,152,300,811 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.3% | 1,881,184 | 0% | 0.14% | $2,594,133,924 |
| STATE STREET CORP | 4.2% | 1,471,879 | +3% | 0.07% | $2,029,706,422 |
| FMR LLC | 4.1% | 1,449,517 | -13% | 0.11% | $1,998,870,948 |
| GEODE CAPITAL MANAGEMENT, LLC | 3.5% | 1,238,619 | +4.4% | 0.11% | $1,711,752,025 |
| AQR CAPITAL MANAGEMENT LLC | 3.2% | 1,116,230 | +9.4% | 0.68% | $1,490,100,586 |
| JPMORGAN CHASE & CO | 2.5% | 889,891 | +26% | 0.08% | $1,132,992,940 |
| Capital World Investors | 2.4% | 865,780 | -47% | 0.16% | $1,193,901,962 |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 1.8% | 620,915 | -7.2% | 3.6% | $856,235,416 |
| Invesco Ltd. | 1.7% | 606,580 | -7.1% | 0.13% | $836,467,080 |
| MORGAN STANLEY | 1.3% | 460,135 | +6.6% | 0.04% | $634,522,928 |
| FIRST TRUST ADVISORS LP | 1.2% | 415,886 | -14% | 0.41% | $573,501,909 |
| Capital International Investors | 1.1% | 391,831 | +245% | 0.13% | $540,331,031 |
| NORTHERN TRUST CORP | 0.93% | 329,098 | +3.2% | 0.06% | $453,822,851 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.81% | 287,735 | +0.44% | 0.06% | $396,783,688 |
| DIMENSIONAL FUND ADVISORS LP | 0.79% | 279,947 | +5.4% | 0.08% | $385,799,542 |
| FEDERATED HERMES, INC. | 0.76% | 267,030 | -16% | 0.6% | $368,231,700 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 0.72% | 252,979 | +13% | 0.19% | $348,855,511 |
| Hood River Capital Management LLC | 0.71% | 249,385 | +1.4% | 3.4% | $343,899,421 |
| GOLDMAN SACHS GROUP INC | 0.69% | 244,047 | +23% | 0.04% | $336,538,976 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 0.69% | 242,196 | -16% | 1.1% | $333,986,407 |
| DEUTSCHE BANK AG\ | 0.68% | 240,791 | -23% | 0.11% | $332,048,380 |
| LORD, ABBETT & CO. LLC | 0.67% | 237,647 | -12% | 1.1% | $327,713,000 |
| BAILLIE GIFFORD & CO | 0.64% | 225,118 | -18% | 0.32% | $310,435,471 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 32,460,560 | $44,548,007,306 | -$1,089,676,911 | $1378.99 | 1,187 |
| 2025 Q4 | 33,277,810 | $31,075,332,284 | +$16,437,341 | $933.29 | 1,034 |
| 2025 Q3 | 33,234,396 | $27,409,511,294 | -$274,288,848 | $825.18 | 880 |
| 2025 Q2 | 33,835,735 | $18,142,945,405 | +$370,208,176 | $536.21 | 747 |
| 2025 Q1 | 33,356,089 | $10,753,206,129 | -$315,763,077 | $322.33 | 623 |
| 2024 Q4 | 33,890,447 | $14,373,369,770 | +$136,178,061 | $424.06 | 664 |
| 2024 Q3 | 33,328,804 | $13,016,134,643 | -$457,859,245 | $390.35 | 586 |
| 2024 Q2 | 34,333,364 | $10,442,773,084 | -$56,142,939 | $304.12 | 551 |
| 2024 Q1 | 34,540,299 | $10,972,735,647 | +$63,750,708 | $317.71 | 496 |
| 2023 Q4 | 34,706,835 | $7,137,905,010 | -$35,628,060 | $205.67 | 441 |
| 2023 Q3 | 34,881,070 | $5,945,291,333 | +$130,702,181 | $170.41 | 397 |
| 2023 Q2 | 34,090,706 | $5,597,234,493 | -$30,152,115 | $164.20 | 374 |
| 2023 Q1 | 34,197,001 | $4,990,815,197 | +$64,279,280 | $145.96 | 343 |
| 2022 Q4 | 33,947,753 | $3,907,238,742 | -$22,085,083 | $115.08 | 332 |
| 2022 Q3 | 34,163,132 | $3,325,741,721 | -$22,365,377 | $97.33 | 283 |
| 2022 Q2 | 34,416,663 | $2,861,756,977 | -$10,608,021 | $83.15 | 262 |
| 2022 Q1 | 34,660,608 | $3,088,369,820 | +$39,714,108 | $89.01 | 267 |
| 2021 Q4 | 34,137,473 | $3,374,735,183 | +$42,008,370 | $98.94 | 279 |
| 2021 Q3 | 33,587,925 | $2,396,907,873 | +$3,049,751 | $71.32 | 258 |
| 2021 Q2 | 33,473,221 | $2,636,858,136 | -$41,974,808 | $78.79 | 275 |
| 2021 Q1 | 34,042,263 | $2,545,994,750 | -$2,632,366 | $74.77 | 245 |
| 2020 Q4 | 34,205,978 | $1,801,605,410 | +$20,115,237 | $52.66 | 242 |
| 2020 Q3 | 33,861,305 | $1,744,642,583 | -$41,304,613 | $51.51 | 226 |
| 2020 Q2 | 34,811,056 | $1,418,227,415 | +$21,609,649 | $40.75 | 210 |
| 2020 Q1 | 34,371,395 | $1,254,382,810 | -$5,779,454 | $36.55 | 213 |