California Water Service Group
CWT- Exchange
- NYSE
- Industry
- Water Supply
- SEC CIK
- 0001035201
In the last 90 days, California Water Service Group insiders filed 0 open-market purchases and 2 sales; 346 institutions reported holding it in 13F filings for Q2 2026, worth $2.69B in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in California Water Service Group as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 337
- +6 vs. Q2 2025
- Shares held
- 50.1M
- +431.8K (+0.9%) vs. Q2 2025
- Total value
- $2.30B
- +$38.0M (+1.7%) vs. Q2 2025
- New holders
- 36
- 122 more added
- Sold out
- 30
- 110 more reduced
7 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting CWT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 346 | $2.69B |
| Q1 2026 | 339 | $2.32B |
| Q4 2025 | 329 | $2.17B |
| Q3 2025 | 337 | $2.30B |
| Q2 2025 | 338 | $2.29B |
| Q1 2025 | 330 | $2.45B |
| Q4 2024 | 323 | $2.23B |
| Q3 2024 | 324 | $2.63B |
| Q2 2024 | 299 | $2.34B |
| Q1 2024 | 275 | $2.27B |
| Q4 2023 | 285 | $2.47B |
| Q3 2023 | 273 | $2.26B |
| Q2 2023 | 286 | $2.44B |
| Q1 2023 | 299 | $2.61B |
| Q4 2022 | 295 | $2.73B |
| Q3 2022 | 281 | $2.31B |
| Q2 2022 | 281 | $2.44B |
| Q1 2022 | 312 | $2.51B |
| Q4 2021 | 307 | $2.96B |
| Q3 2021 | 268 | $2.40B |
| Q2 2021 | 251 | $2.20B |
| Q1 2021 | 259 | $2.18B |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding California Water Service Group; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 10,448,234 | $479.5M | 0.01% | +79,016+0.8% | Added |
| Vanguard Group Inc | 7,312,302 | $335.6M | 0.01% | −64,217−0.9% | Reduced |
| T. Rowe Price Investment Management, Inc. | 3,300,909 | $151.5M | 0.09% | +24,493+0.7% | Added |
| State Street Corp | 3,101,001 | $142.3M | 0.00% | −82,336−2.6% | Reduced |
| Amundi | 2,276,599 | $104.3M | 0.03% | +369,430+19.4% | Added |
| Nuance Investments, LLC | 1,764,459 | $81.0M | 8.24% | +35,844+2.1% | Added |
| Geode Capital Management, LLC | 1,416,337 | $65.0M | 0.00% | −797−0.1% | Reduced |
| First Trust Advisors LP | 1,404,320 | $64.4M | 0.05% | +59,404+4.4% | Added |
| FMR LLC | 1,403,132 | $64.4M | 0.00% | +350,535+33.3% | Added |
| Dimensional Fund Advisors LP | 1,149,018 | $52.7M | 0.01% | −8,991−0.8% | Reduced |
| Invesco Ltd. | 897,064 | $41.2M | 0.01% | −23,651−2.6% | Reduced |
| Morgan Stanley | 802,125 | $36.8M | 0.00% | −57,371−6.7% | Reduced |
| Legal & General Group Plc | 760,261 | $34.9M | 0.01% | +53,895+7.6% | Added |
| Cbre Clarion Securities LLC | 730,263 | $33.5M | 0.48% | −21,724−2.9% | Reduced |
| Charles Schwab Investment Management Inc | 718,555 | $33.0M | 0.01% | −8,761−1.2% | Reduced |
| Northern Trust Corp | 655,254 | $30.1M | 0.00% | −58,128−8.1% | Reduced |
| Bank of New York Mellon Corp | 568,803 | $26.1M | 0.00% | −29,004−4.9% | Reduced |
| Triodos Investment Management BV | 493,000 | $22.6M | 1.64% | 00.0% | Unchanged |
| KBC Group NV | 446,627 | $20.5M | 0.05% | −116,707−20.7% | Reduced |
| Beck Bode, LLC | 402,261 | $18.5M | 2.98% | +5,863+1.5% | Added |
| Nuveen, LLC | 391,302 | $18.0M | 0.00% | −18,739−4.6% | Reduced |
| Millennium Management LLC | 368,074 | $16.9M | 0.01% | +361,339+5,365.1% | Added |
| Renaissance Technologies LLC | 301,116 | $13.8M | 0.02% | +20,116+7.2% | Added |
| Raymond James Financial Inc | 298,282 | $13.7M | 0.00% | −34,680−10.4% | Reduced |
| Principal Financial Group Inc | 287,705 | $13.2M | 0.01% | −7,680−2.6% | Reduced |
| JPMorgan Chase & Co | 277,245 | $12.7M | 0.00% | +35,627+14.7% | Added |
| Victory Capital Management Inc | 268,100 | $12.3M | 0.01% | −2,538−0.9% | Reduced |
| Goldman Sachs Group Inc | 259,992 | $11.9M | 0.00% | +32,802+14.4% | Added |
| UBS Asset Management Americas Inc | 241,777 | $11.1M | 0.00% | −109,371−31.1% | Reduced |
| UBS Group AG | 240,112 | $11.0M | 0.00% | +68,923+40.3% | Added |
| Public Sector Pension Investment Board | 232,432 | $10.7M | 0.04% | +29,306+14.4% | Added |
| American Century Companies Inc | 227,822 | $10.5M | 0.01% | +113,193+98.7% | Added |
| Rhumbline Advisers | 189,695 | $8.71M | 0.01% | +795+0.4% | Added |
| Aptus Capital Advisors, LLC | 178,487 | $8.19M | 0.07% | +23,622+15.3% | Added |
| Ameriprise Financial Inc | 156,444 | $7.18M | 0.00% | −20,052−11.4% | Reduced |
| Price T Rowe Associates Inc | 151,401 | $6.95M | 0.00% | +3,247+2.2% | Added |
| ProShare Advisors LLC | 149,642 | $6.87M | 0.01% | +672+0.5% | Added |
| Bank of America Corp | 149,506 | $6.86M | 0.00% | −13,122−8.1% | Reduced |
| Alliancebernstein L.P. | 141,181 | $6.48M | 0.00% | +31,976+29.3% | Added |
| Great West Life Assurance Co | 133,624 | $6.06M | 0.01% | +5,567+4.3% | Added |
| Swiss National Bank | 115,400 | $5.30M | 0.00% | +1,800+1.6% | Added |
| AQR Capital Management LLC | 114,154 | $5.24M | 0.00% | +40,562+55.1% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 112,573 | $5.17M | 0.03% | −2,204−1.9% | Reduced |
| Jane Street Group, LLC | 111,325 | $5.11M | 0.01% | −28,664−20.5% | Reduced |
| Barclays PLC | 109,885 | $5.04M | 0.00% | −27,626−20.1% | Reduced |
| Northstar Asset Management Inc | 106,053 | $4.87M | 1.27% | +3,815+3.7% | Added |
| Federated Hermes, Inc. | 100,525 | $4.61M | 0.01% | +3,355+3.5% | Added |
| Thematics Asset Management | 100,470 | $4.61M | 0.21% | −54,000−35.0% | Reduced |
| New Age Alpha Advisors, LLC | 99,477 | $4.56M | 0.19% | −4,941−4.7% | Reduced |
| Dark Forest Capital Management LP | 97,996 | $4.50M | 0.17% | +13,983+16.6% | Added |
| Mariner, LLC | 95,747 | $4.39M | 0.01% | +27,306+39.9% | Added |
| Meiji Yasuda Asset Management Co Ltd. | 92,071 | $4.23M | 0.20% | +2,040+2.3% | Added |
| Crawford Investment Counsel Inc | 89,989 | $4.13M | 0.07% | +4,440+5.2% | Added |
| Jacobs Levy Equity Management, Inc | 84,208 | $3.86M | 0.02% | +4,120+5.1% | Added |
| Deutsche Bank AG | 83,980 | $3.85M | 0.00% | +7,057+9.2% | Added |
| Prudential Financial Inc | 83,340 | $3.82M | 0.00% | −7,280−8.0% | Reduced |
| Martingale Asset Management L P | 82,597 | $3.79M | 0.10% | +519+0.6% | Added |
| Wells Fargo & Company | 79,473 | $3.65M | 0.00% | +7,660+10.7% | Added |
| Trexquant Investment LP | 66,909 | $3.07M | 0.03% | −15,898−19.2% | Reduced |
| Maryland State Retirement & Pension System | 63,795 | $2.93M | 0.06% | −7,308−10.3% | Reduced |
| New York State Teachers Retirement System | 62,602 | $2.87M | 0.01% | 00.0% | Unchanged |
| Rodgers Brothers Inc. | 57,775 | $2.65M | 0.33% | −3,300−5.4% | Reduced |
| Kennedy Capital Management, Inc. | 57,574 | $2.64M | 0.06% | +210.0% | Added |
| Storebrand Asset Management AS | 57,549 | $2.64M | 0.01% | −2,041−3.4% | Reduced |
| Arrowstreet Capital, Limited Partnership | 57,173 | $2.62M | 0.00% | −21,009−26.9% | Reduced |
| California State Teachers Retirement System | 56,761 | $2.60M | 0.00% | +2,345+4.3% | Added |
| Midwest Trust Co | 55,211 | $2.53M | 0.03% | −120−0.2% | Reduced |
| Royal Bank of Canada | 53,841 | $2.47M | 0.00% | −74,683−58.1% | Reduced |
| BNP Paribas Arbitrage, SA | 53,635 | $2.46M | 0.00% | +16,635+45.0% | Added |
| Exchange Traded Concepts, LLC | 51,993 | $2.39M | 0.02% | +1,538+3.0% | Added |
| TD Asset Management Inc | 51,888 | $2.38M | 0.00% | 00.0% | Unchanged |
| Clear Harbor Asset Management, LLC | 50,985 | $2.34M | 0.17% | 00.0% | Unchanged |
| Allianz Asset Management GmbH | 50,428 | $2.31M | 0.00% | +4,003+8.6% | Added |
| Mercer Global Advisors Inc | 49,588 | $2.28M | 0.00% | +2,339+5.0% | Added |
| Citigroup Inc | 47,912 | $2.20M | 0.00% | −14,191−22.9% | Reduced |
| Verition Fund Management LLC | 47,047 | $2.16M | 0.01% | +17,987+61.9% | Added |
| Franklin Resources Inc | 46,430 | $2.13M | 0.00% | +21,763+88.2% | Added |
| Magellan Asset Management Ltd | 46,034 | $2.11M | 0.03% | +2,520+5.8% | Added |
| Davy Global Fund Management Ltd | 45,984 | $2.11M | 0.14% | −3,871−7.8% | Reduced |
| State of New Jersey Common Pension Fund D | 45,479 | $2.09M | 0.01% | +5,312+13.2% | Added |
| Bridge City Capital, LLC | 44,878 | $2.06M | 0.55% | −772−1.7% | Reduced |
| SG Americas Securities, LLC | 44,871 | $2.06M | 0.01% | +32,750+270.2% | Added |
| Thrivent Financial for Lutherans | 44,644 | $2.05M | 0.00% | −20,904−31.9% | Reduced |
| Gabelli Funds LLC | 43,200 | $1.98M | 0.01% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 41,795 | $1.92M | 0.00% | −3,836−8.4% | Reduced |
| Freestone Grove Partners LP | 40,995 | $1.88M | 0.01% | +13,464+48.9% | Added |
| Nia Impact Advisors, LLC | 37,611 | $1.73M | 0.56% | +619+1.7% | Added |
| Jackson Creek Investment Advisors LLC | 37,534 | $1.72M | 0.50% | +37,534 | New |
| D. E. Shaw & Co., Inc. | 36,358 | $1.67M | 0.00% | +30,212+491.6% | Added |
| State of Wisconsin Investment Board | 36,162 | $1.66M | 0.00% | −292−0.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 35,410 | $1.62M | 0.00% | −180−0.5% | Reduced |
| First National Corp | 36,140 | $1.61M | 0.31% | −2,226−5.8% | Reduced |
| MetLife Investment Management | 34,422 | $1.58M | 0.01% | −1,076−3.0% | Reduced |
| Macquarie Group Ltd | 33,777 | $1.55M | 0.00% | −7,386−17.9% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 32,800 | $1.51M | 0.00% | 00.0% | Unchanged |
| Quest Partners LLC | 31,957 | $1.47M | 0.10% | +31,956+3,195,600.0% | Added |
| State of Alaska, Department of Revenue | 31,787 | $1.46M | 0.01% | −3,666−10.3% | Reduced |
| Illinois Municipal Retirement Fund | 31,506 | $1.45M | 0.02% | −540−1.7% | Reduced |
| New York State Common Retirement Fund | 30,544 | $1.40M | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 29,018 | $1.33M | 0.00% | −1,870−6.1% | Reduced |