Stock Ownership/FIX

COMFORT SYS USA INC (FIX): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in FIX · Industrials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
46
13F filers
Aggregate Value
$4.7B
Across holders
Last Price
$1609.69
2026-08-24
Sector
Industrials
GICS
Quarterly fund activity22 increased22 reduced2 exited
Full exits: VOLORIDGE INVESTMENT MANAGEMENT, LLC, MARSHALL WACE, LLP
Institutional Holders of FIX
↗
46 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund1.06M$2.1B44.5%0.7%Reduced+$2.1BQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund222K$439.4M9.4%0.2%Reduced$-62.0MQ2 2026
BAILLIE GIFFORD & CO
CIK 0001088875
Institutional Manager213K$421.5M9.0%0.4%Reduced+$232.7MQ2 2026
Point72 Asset Management, L.P.
CIK 0001603466
Hedge Fund180K$356.2M7.6%0.4%Reduced+$302.3MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund76K$150.9M3.2%0.2%Added+$38.6MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund67K$133.0M2.8%0.1%Reduced+$85.1MQ2 2026
Clearbridge Investments, LLC
CIK 0001348883
Hedge Fund65K$129.6M2.8%0.1%Reduced$-187.5MQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund54K$106.9M2.3%0.2%Reduced+$38.8MQ2 2026
Bridgewater Associates, LP
CIK 0001350694
Hedge Fund49K$96.1M2.1%0.4%Reduced$-75.2MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund47K$92.9M2.0%0.0%Added+$3.2MQ2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$2.1B· 44.5% of total· 0.7% port· 1.06M sh· +$2.1B QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPReduced
Hedge Fund
$439.4M· 9.4% of total· 0.2% port· 222K sh· $-62.0M QoQ· Q2 2026
BAILLIE GIFFORD & COReduced
Institutional Manager
$421.5M· 9.0% of total· 0.4% port· 213K sh· +$232.7M QoQ· Q2 2026
Point72 Asset Management, L.P.Reduced
Hedge Fund
$356.2M· 7.6% of total· 0.4% port· 180K sh· +$302.3M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCAdded
Hedge Fund
$150.9M· 3.2% of total· 0.2% port· 76K sh· +$38.6M QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$133.0M· 2.8% of total· 0.1% port· 67K sh· +$85.1M QoQ· Q2 2026
Clearbridge Investments, LLCReduced
Hedge Fund
$129.6M· 2.8% of total· 0.1% port· 65K sh· $-187.5M QoQ· Q2 2026
Man Group plcReduced
Hedge Fund
$106.9M· 2.3% of total· 0.2% port· 54K sh· +$38.8M QoQ· Q2 2026
Bridgewater Associates, LPReduced
Hedge Fund
$96.1M· 2.1% of total· 0.4% port· 49K sh· $-75.2M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$92.9M· 2.0% of total· 0.0% port· 47K sh· +$3.2M QoQ· Q2 2026
Gotham Asset Management, LLCReduced
Hedge Fund
$91.4M· 2.0% of total· 0.2% port· 46K sh· $-5.4M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$80.8M· 1.7% of total· 0.1% port· 41K sh· +$80.8M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$72.2M· 1.5% of total· 0.0% port· 36K sh· +$59.1M QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Added
Hedge Fund
$62.0M· 1.3% of total· 0.1% port· 31K sh· +$5.4M QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$58.2M· 1.2% of total· 0.1% port· 29K sh· +$54.2M QoQ· Q2 2026
FRED ALGER MANAGEMENT, LLCReduced
Hedge Fund
$38.2M· 0.8% of total· 0.1% port· 19K sh· +$37.2M QoQ· Q2 2026
COATUE MANAGEMENT LLCAdded
Hedge Fund
$35.3M· 0.8% of total· 0.1% port· 18K sh· — QoQ· Q2 2026
TCW GROUP INCAdded
Hedge Fund
$30.1M· 0.6% of total· 0.2% port· 15K sh· +$29.0M QoQ· Q2 2026
MARKEL CORP (MKL)Unchanged
Hedge Fund
$25.8M· 0.6% of total· 0.2% port· 13K sh· +$0 QoQ· Q2 2026
MOORE CAPITAL MANAGEMENT, LPAdded
Hedge Fund
$17.9M· 0.4% of total· 0.3% port· 9K sh· +$6.2M QoQ· Q2 2026
Schonfeld Strategic Advisors LLCReduced
Hedge Fund
$16.4M· 0.3% of total· 0.1% port· 8K sh· $-16.5M QoQ· Q2 2026
Verition Fund Management LLCReduced
Hedge Fund
$16.3M· 0.3% of total· 0.1% port· 8K sh· $-2.7M QoQ· Q2 2026
Woodline Partners LPAdded
Hedge Fund
$15.2M· 0.3% of total· 0.0% port· 8K sh· +$1.5M QoQ· Q2 2026
Walleye Capital LLCReduced
Hedge Fund
$14.7M· 0.3% of total· 0.1% port· 7K sh· +$13.7M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$14.1M· 0.3% of total· 0.0% port· 7K sh· +$10.5M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$13.4M· 0.3% of total· 0.0% port· 7K sh· +$9.4M QoQ· Q2 2026
Holocene Advisors, LPReduced
Hedge Fund
$13.0M· 0.3% of total· 0.0% port· 7K sh· $-39.9M QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$7.8M· 0.2% of total· 0.0% port· 4K sh· $-16.3M QoQ· Q2 2026
JUPITER ASSET MANAGEMENT LTDAdded
Hedge Fund
$7.3M· 0.2% of total· 0.0% port· 4K sh· — QoQ· Q2 2026
Hudson Bay Capital Management LPAdded
Hedge Fund
$6.9M· 0.1% of total· 0.0% port· 3K sh· — QoQ· Q2 2026
Lighthouse Investment Partners, LLCReduced
Hedge Fund
$5.9M· 0.1% of total· 0.2% port· 3K sh· $-9.1M QoQ· Q2 2026
Squarepoint Ops LLCReduced
Hedge Fund
$5.0M· 0.1% of total· 0.0% port· 3K sh· $-11.4M QoQ· Q2 2026
Engle Capital Management, L.P.Reduced
Hedge Fund
$4.8M· 0.1% of total· 1.3% port· 2K sh· $-11.9M QoQ· Q2 2026
CAXTON ASSOCIATES LLPAdded
Hedge Fund
$3.1M· 0.1% of total· 0.1% port· 2K sh· +$2.8M QoQ· Q2 2026
CAPSTONE INVESTMENT ADVISORS, LLCAdded
Hedge Fund
$2.6M· 0.1% of total· 0.0% port· 1K sh· +$1.8M QoQ· Q2 2026
Fulcrum Asset Management LLPAdded
Hedge Fund
$2.5M· 0.1% of total· 0.2% port· 1K sh· — QoQ· Q2 2026
AXIOM INVESTORS LLC /DEAdded
Hedge Fund
$2.4M· 0.1% of total· 0.0% port· 1K sh· — QoQ· Q2 2026
MARINER INVESTMENT GROUP LLCAdded
Hedge Fund
$1.5M· 0.0% of total· 0.3% port· 750 sh· — QoQ· Q2 2026
Grantham, Mayo, Van Otterloo & Co. LLCAdded
Institutional Manager
$1.5M· 0.0% of total· 0.0% port· 743 sh· — QoQ· Q2 2026
Parallax Volatility Advisers, L.P.Added
Hedge Fund
$1.2M· 0.0% of total· 0.0% port· 610 sh· — QoQ· Q2 2026
Fisher Asset Management, LLCAdded
Institutional Manager
$617K· 0.0% of total· 0.0% port· 311 sh· +$4K QoQ· Q2 2026
PineBridge Investments, L.P.Reduced
Hedge Fund
$451K· 0.0% of total· 0.0% port· 547 sh· $-10.3M QoQ· Q3 2025
Brevan Howard Capital Management LPReduced
Hedge Fund
$307K· 0.0% of total· 0.0% port· 155 sh· $-3.0M QoQ· Q2 2026
Bridgewater Advisors Inc.Added
Hedge Fund
$206K· 0.0% of total· 0.0% port· 128 sh· +$3K QoQ· Q2 2026
Ancora Advisors, LLCUnchanged
Hedge Fund
$24K· 0.0% of total· 0.0% port· 12 sh· +$0 QoQ· Q2 2026
Alphadyne Asset Management LPReduced
Hedge Fund
$10K· 0.0% of total· 0.0% port· 5 sh· $-783K QoQ· Q2 2026
1–10 of 46
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