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CWT

California Water Service Group
$50.23 +1.19 (+2.43%) At close · Jul 2
Market Cap
$3.01B
Shares
59,853,262

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 336
Total Value: $2,129,927,301
Total Shares: 46,976,725
Showing 1–100 of 336 holdings by value · page 1 of 4

Institutional Ownership Trend

26 quarters

Superinvestors Holding CWT

All superinvestors →
Ray Dalio $261,657

Holder Concentration

Across 336 13F filers
Top Holder
21.9%
Jun 2023 → Mar 2026 · range 20.6% – 22.7%
of institutional value
Top 5
48.9%
Jun 2023 → Mar 2026 · range 48.9% – 56.5%
of institutional value
Top 10
63.7%
Jun 2023 → Mar 2026 · range 63.7% – 70.0%
of institutional value
HHI
740
Jun 2023 → Mar 2026 · range 740 – 913
Broadly held
Showing 100 of 336
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $467,389,878 21.94% 10,308,555
Mega Amundi $157,375,001 7.39% 3,470,997
Mega T. Rowe Price Investment Management, Inc. $154,985,449 7.28% 3,418,294
Mega STATE STREET CORP $140,674,559 6.60% 3,102,659
Mega VANGUARD CAPITAL MANAGEMENT LLC $120,841,301 5.67% 2,665,225
Small NUANCE INVESTMENTS, LLC $72,713,934 3.41% 1,603,748
Mega GEODE CAPITAL MANAGEMENT, LLC $66,894,862 3.14% 1,475,405
Mega FMR LLC $63,023,233 2.96% 1,390,014
Mega FIRST TRUST ADVISORS LP $61,397,840 2.88% 1,354,165
Mega DIMENSIONAL FUND ADVISORS LP $52,519,993 2.47% 1,158,359
Mega MORGAN STANLEY $50,722,078 2.38% 1,118,705
Mega Invesco Ltd. $45,441,195 2.13% 1,002,232
Mega Legal & General Group Plc $35,253,752 1.66% 777,542
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $33,028,195 1.55% 728,456
Mid CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC $29,358,330 1.38% 647,515
Mega NORTHERN TRUST CORP Bank $28,895,315 1.36% 637,303
Large KBC Group NV $26,172,378 1.23% 577,247
Mega Bank of New York Mellon Corp Bank $22,973,865 1.08% 506,702
Mega Nuveen, LLC $19,274,668 0.90% 425,114
Mid Triodos Investment Management BV $18,770,760 0.88% 414,000
Small Beck Bode, LLC $18,667,112 0.88% 411,714
Mega VANGUARD FIDUCIARY TRUST CO Bank $17,519,920 0.82% 386,412
Mega VICTORY CAPITAL MANAGEMENT INC $14,568,422 0.68% 321,315
Mega RAYMOND JAMES FINANCIAL INC $13,353,445 0.63% 294,518
Mega PRINCIPAL FINANCIAL GROUP INC $13,131,505 0.62% 289,623
Mega GOLDMAN SACHS GROUP INC $12,875,471 0.60% 283,976
Mega AMERICAN CENTURY COMPANIES INC $11,845,437 0.56% 261,258
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $11,696,359 0.55% 257,970
Large MARSHALL WACE, LLP $11,641,815 0.55% 256,767
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $10,642,789 0.50% 234,733
Large Public Sector Pension Investment Board Pension $9,664,946 0.45% 213,166
Large Qube Research & Technologies Ltd $8,475,224 0.40% 186,926
Mega UBS Group AG $8,425,349 0.40% 185,826
Mega RHUMBLINE ADVISERS $7,907,159 0.37% 174,397
Mega AQR CAPITAL MANAGEMENT LLC $7,695,600 0.36% 169,731
Large ProShare Advisors LLC $6,893,947 0.32% 152,050
Mega JPMORGAN CHASE & CO $6,850,281 0.32% 151,087
Large Mariner, LLC $6,267,393 0.29% 138,231
Mega AMERIPRISE FINANCIAL INC $6,173,086 0.29% 136,151
Mid Meiji Yasuda Asset Management Co Ltd. $6,080,819 0.29% 134,116
Large FEDERATED HERMES, INC. $5,857,518 0.28% 129,191
Mega JANE STREET GROUP, LLC $5,589,423 0.26% 123,278
Mega BANK OF AMERICA CORP /DE/ Bank $5,526,898 0.26% 121,899
Mega Swiss National Bank Bank $5,327,450 0.25% 117,500
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS $4,804,226 0.23% 105,960
Mid MARTINGALE ASSET MANAGEMENT L P $4,714,453 0.22% 103,980
Mid CRAWFORD INVESTMENT COUNSEL INC $4,669,521 0.22% 102,989
Large RENAISSANCE TECHNOLOGIES LLC $4,552,136 0.21% 100,400
Mega DEUTSCHE BANK AG\ Bank $4,326,205 0.20% 95,417
Large CANADA LIFE ASSURANCE Co Insurance $4,287,214 0.20% 94,557
Large Trexquant Investment LP $3,926,398 0.18% 86,599
Mid DUFF & PHELPS INVESTMENT MANAGEMENT CO $3,859,114 0.18% 85,115
Mega PRICE T ROWE ASSOCIATES INC /MD/ $3,781,945 0.18% 83,413
Mega D. E. Shaw & Co., Inc. $3,753,789 0.18% 82,792
Mega TWO SIGMA INVESTMENTS, LP $3,490,091 0.16% 76,976
Mega FRANKLIN RESOURCES INC $3,063,757 0.14% 67,573
Large JACOBS LEVY EQUITY MANAGEMENT, INC $3,014,611 0.14% 66,489
Mega ALLIANCEBERNSTEIN L.P. $2,984,097 0.14% 65,816
Large NEW YORK STATE TEACHERS RETIREMENT SYSTEM Pension $2,857,598 0.13% 63,026
Mid Maryland State Retirement & Pension System Pension $2,801,105 0.13% 61,780
Large PRUDENTIAL FINANCIAL INC $2,790,813 0.13% 61,553
Mid Magellan Asset Management Ltd $2,784,601 0.13% 61,416
Mega MILLENNIUM MANAGEMENT LLC $2,778,480 0.13% 61,281
Large Thrivent Financial for Lutherans $2,736,721 0.13% 60,360
Large Universal- Beteiligungs- und Servicegesellschaft mbH $2,732,732 0.13% 60,272
Small NORTHSTAR ASSET MANAGEMENT INC $2,719,538 0.13% 59,981
Large Allianz Asset Management GmbH $2,668,802 0.13% 58,862
Mega TD Asset Management Inc $2,631,442 0.12% 58,038
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $2,551,417 0.12% 56,273
Mega VANGUARD ASSET MANAGEMENT, Ltd $2,526,480 0.12% 55,723
Large MACQUARIE GROUP LTD $2,423,196 0.11% 53,445
Large SEI INVESTMENTS CO $2,397,715 0.11% 52,883
Mid Midwest Trust Co Bank $2,395,448 0.11% 52,833
Mid EXCHANGE TRADED CONCEPTS, LLC $2,394,495 0.11% 52,812
Mega WELLS FARGO & COMPANY/MN $2,394,267 0.11% 52,807
Mid FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A. $2,348,884 0.11% 51,806
Small Rodgers Brothers Inc. $2,268,133 0.11% 50,025
Mega BARCLAYS PLC $2,247,638 0.11% 49,573
Mid Clear Harbor Asset Management, LLC $2,235,760 0.10% 49,311
Large STOREBRAND ASSET MANAGEMENT AS $2,229,141 0.10% 49,165
Large Squarepoint Ops LLC $2,222,385 0.10% 49,016
Large State of New Jersey Common Pension Fund D Pension $2,207,060 0.10% 48,678
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $2,138,551 0.10% 47,167
Large Zurcher Kantonalbank (Zurich Cantonalbank) Bank $2,130,254 0.10% 46,984
Mid WEDGE CAPITAL MANAGEMENT L L P/NC $2,020,577 0.09% 44,565
Large Vanguard Investments Australia, Ltd. $2,019,126 0.09% 44,533
Large SG Americas Securities, LLC Broker-Dealer $2,010,148 0.09% 44,335
Large HRT FINANCIAL LP $1,960,274 0.09% 43,235
Large GABELLI FUNDS LLC $1,958,688 0.09% 43,200
Mid KORNITZER CAPITAL MANAGEMENT INC /KS $1,926,950 0.09% 42,500
Large MACKENZIE FINANCIAL CORP $1,860,753 0.09% 41,040
Large Vontobel Holding Ltd. $1,820,174 0.09% 40,145
Small Bridge City Capital, LLC $1,736,159 0.08% 38,292
Large CAPITAL FUND MANAGEMENT S.A. $1,692,406 0.08% 37,327
Small NIA IMPACT ADVISORS, LLC $1,628,431 0.08% 35,916
Mid South Dakota Investment Council $1,573,978 0.07% 34,715
Mega CITADEL ADVISORS LLC $1,573,206 0.07% 34,698
Large VOYA INVESTMENT MANAGEMENT LLC $1,515,353 0.07% 33,422
Large MetLife Investment Management, LLC $1,499,620 0.07% 33,075
Mega CANADA PENSION PLAN INVESTMENT BOARD Pension $1,482,618 0.07% 32,700
Key facts CIK 1035201 CUSIP 130788102 13F (30d) 24 filings 4 filers Visit website Investor relations

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