DOSSIER · 13F Holders · Q1 2026Utilities · Water Supply
CWT

CALIFORNIA WTR SVC GROUP

358 institutions still hold CALIFORNIA WTR SVC GROUP as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 130788102·Water Supply·358 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$1.8B
visible holders
Holders
358
filers reporting
Concentration
25.35%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

358 institutions reported CWT in Q1 2026. BlackRock, Inc. leads at 25.4% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$467M10.3M0.01%Q1 2026
02
Vanguard Portfolio Management
CIK 0002100121· Index
$194M4.3M0.01%Q1 2026
03
Amundi
CIK 0001330387
$157M3.5M0.04%Q1 2026
04
T. Rowe Price Investment Management, Inc.
CIK 0001897612
$155M3.4M0.11%Q1 2026
05
STATE STREET CORP
CIK 0000093751
$141M3.1M0.00%Q1 2026
06
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$121M2.7M0.00%Q1 2026
07
NUANCE INVESTMENTS, LLC
CIK 0001473182
$73M1.6M10.14%Q1 2026
08
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$67M1.5M0.00%Q1 2026
09
FMR LLC
CIK 0000315066
$63M1.4M0.00%Q1 2026
10
FIRST TRUST ADVISORS LP
CIK 0001125816· Index
$61M1.4M0.04%Q1 2026
11
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$53M1.2M0.01%Q1 2026
12
MORGAN STANLEY
CIK 0000895421
$51M1.1M0.00%Q1 2026
13
Invesco Ltd.
CIK 0000914208
$45M1.0M0.00%Q1 2026
14
Legal & General Group Plc
CIK 0000764068
$35M778K0.01%Q1 2026
15
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$33M728K0.01%Q1 2026
16
CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC
CIK 0001033984
$29M648K0.44%Q1 2026
17
NORTHERN TRUST CORP
CIK 0000073124· Index
$29M637K0.00%Q1 2026
18
KBC Group NV
CIK 0001411133
$26M577K0.07%Q1 2026
19
Bank of New York Mellon Corp
CIK 0001390777
$23M507K0.00%Q1 2026
20
Nuveen, LLC
CIK 0001871926
$19M425K0.01%Q1 2026
Page 1 of 18
338 more holders available. Log in →
Insiders at CALIFORNIA WTR SVC GROUP
Mortensen Michelle ROuyang Elissa YPeters Todd KennethScanlon Thomas AJenkins Kenneth GKropelnicki Martin ALuu Michael BLynch James Patrick