13F Insight
DOSSIER · 13F Holders · Q1 2026Industrials · Electrical WorkCheap mega-capRe-rated
FIX

COMFORT SYS USA INC

1,233 institutions still hold COMFORT SYS USA INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 199908104·Electrical Work·1,233 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 5.7%
vs prior quarter
13F value held
$26.0B
75.0% inst. owned
of float
Holders
1,233
-18 QoQ
filers reporting
Activity
+88 / −20
+891 added · −789 reduced
this quarter
Concentration
18.66%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

1,233 institutions reported FIX in Q1 2026. BlackRock, Inc. leads at 18.7% of the visible book. -18 net institutions QoQ — distribution reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$4.8B3.5M0.08%Q1 202602
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119
$3.2B2.3M0.08%Q1 202603
Vanguard Portfolio Management
CIK 0002100121
$2.6B1.9M0.14%Q1 202604
STATE STREET CORP
CIK 0000093751
$2.0B1.5M0.07%Q1 202605
FMR LLC
CIK 0000315066
$2.0B1.4M0.11%Q1 202606
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$1.7B1.2M0.11%Q1 202607
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$1.5B1.1M0.68%Q1 202608
Capital World Investors
CIK 0001422849
$1.2B866K0.16%Q1 202609
JPMORGAN CHASE & CO
CIK 0000019617
$1.1B890K0.07%Q1 202610
WESTFIELD CAPITAL MANAGEMENT CO LP
CIK 0001177719
$856M621K3.59%Q1 202611
Invesco Ltd.
CIK 0000914208
$836M607K0.13%Q1 202612
MORGAN STANLEY
CIK 0000895421
$635M460K0.04%Q1 202613
FIRST TRUST ADVISORS LP
CIK 0001125816· Index
$574M416K0.41%Q1 202614
Capital International Investors
CIK 0001562230
$540M392K0.13%Q1 202615
NORTHERN TRUST CORP
CIK 0000073124· Index
$454M329K0.06%Q1 202616
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$404M293K0.05%Q1 202617
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$397M288K0.06%Q1 202618
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$386M280K0.08%Q1 202619
FEDERATED HERMES, INC.
CIK 0001056288
$368M267K0.60%Q1 202620
Point72 Asset Management, L.P.
CIK 0001603466
$361M262K0.46%Q1 2026
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