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 |
|---|---|---|---|---|---|
| State Board of Administration of Florida Retirement System | 16,459 | $755.3K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 16,548 | $759.4K | 0.01% | +3,090+23.0% | Added |
| Teachers Retirement System of the State of Kentucky | 16,551 | $760.0K | 0.01% | 00.0% | Unchanged |
| State of Tennessee, Treasury Department | 16,712 | $766.9K | 0.00% | −4,437−21.0% | Reduced |
| Amalgamated Bank | 17,260 | $792.0K | 0.01% | +306+1.8% | Added |
| Creative Planning | 17,335 | $795.5K | 0.00% | +2,033+13.3% | Added |
| Arizona State Retirement System | 17,627 | $808.9K | 0.00% | +266+1.5% | Added |
| Cetera Investment Advisers | 17,793 | $816.6K | 0.00% | +4,540+34.3% | Added |
| Gsa Capital Partners LLP | 17,924 | $823.0K | 0.07% | +17,924 | New |
| Quantinno Capital Management LP | 18,176 | $834.1K | 0.00% | +6,477+55.4% | Added |
| Yousif Capital Management, LLC | 18,410 | $844.8K | 0.01% | −3,735−16.9% | Reduced |
| Brevan Howard Capital Management LP | 18,795 | $862.5K | 0.01% | +18,795 | New |
| Comerica Bank | 19,047 | $874.0K | 0.00% | −3,575−15.8% | Reduced |
| Cerity Partners LLC | 19,850 | $910.9K | 0.00% | +3,530+21.6% | Added |
| Teton Advisors, LLC | 20,060 | $920.6K | 0.57% | +20,060 | New |
| Alps Advisors Inc | 20,173 | $925.7K | 0.01% | +571+2.9% | Added |
| LPL Financial LLC | 20,175 | $925.8K | 0.00% | −1,154−5.4% | Reduced |
| Two Sigma Investments, LP | 20,376 | $935.1K | 0.00% | +12,900+172.6% | Added |
| Canvas Wealth Advisors, LLC | 20,653 | $937.6K | 0.17% | +1,097+5.6% | Added |
| CenterBook Partners LP | 20,583 | $944.6K | 0.05% | −8,176−28.4% | Reduced |
| Handelsbanken Fonder AB | 20,915 | $960.0K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 20,991 | $963.0K | 0.00% | +13,947+198.0% | Added |
| Wulff, Hansen & Co. | 21,225 | $974.0K | 0.84% | −430−2.0% | Reduced |
| Van Eck Associates Corp | 21,700 | $996.0K | 0.00% | +1,378+6.8% | Added |
| Voloridge Investment Management, LLC | 22,318 | $1.02M | 0.00% | +22,318 | New |
| Intech Investment Management LLC | 23,894 | $1.10M | 0.01% | −2,090−8.0% | Reduced |
| Bank of Montreal | 25,139 | $1.15M | 0.00% | −7,738−23.5% | Reduced |
| CoreCommodity Management, LLC | 25,580 | $1.17M | 0.22% | −10,374−28.9% | Reduced |
| Canada Pension Plan Investment Board | 25,800 | $1.18M | 0.00% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 25,873 | $1.19M | 0.00% | +2,575+11.1% | Added |
| HighTower Advisors, LLC | 26,374 | $1.21M | 0.00% | −655−2.4% | Reduced |
| Balyasny Asset Management LLC | 26,625 | $1.22M | 0.00% | +26,625 | New |
| Colony Group, LLC | 26,826 | $1.23M | 0.00% | −356−1.3% | Reduced |
| Maven Securities LTD | 27,112 | $1.24M | 0.24% | +27,112 | New |
| Louisiana State Employees Retirement System | 27,400 | $1.26M | 0.02% | −400−1.4% | Reduced |
| Vontobel Holding Ltd. | 27,743 | $1.27M | 0.00% | −2,225−7.4% | Reduced |
| Arjuna Capital | 28,771 | $1.32M | 0.33% | −34,488−54.5% | Reduced |
| Manufacturers Life Insurance Company, The | 29,018 | $1.33M | 0.00% | −1,870−6.1% | Reduced |
| New York State Common Retirement Fund | 30,544 | $1.40M | 0.00% | 00.0% | Unchanged |
| Illinois Municipal Retirement Fund | 31,506 | $1.45M | 0.02% | −540−1.7% | Reduced |
| State of Alaska, Department of Revenue | 31,787 | $1.46M | 0.01% | −3,666−10.3% | Reduced |
| Quest Partners LLC | 31,957 | $1.47M | 0.10% | +31,956+3,195,600.0% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 32,800 | $1.51M | 0.00% | 00.0% | Unchanged |
| Macquarie Group Ltd | 33,777 | $1.55M | 0.00% | −7,386−17.9% | Reduced |
| MetLife Investment Management | 34,422 | $1.58M | 0.01% | −1,076−3.0% | Reduced |
| First National Corp | 36,140 | $1.61M | 0.31% | −2,226−5.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 35,410 | $1.62M | 0.00% | −180−0.5% | Reduced |
| State of Wisconsin Investment Board | 36,162 | $1.66M | 0.00% | −292−0.8% | Reduced |
| D. E. Shaw & Co., Inc. | 36,358 | $1.67M | 0.00% | +30,212+491.6% | Added |
| Jackson Creek Investment Advisors LLC | 37,534 | $1.72M | 0.50% | +37,534 | New |
| Nia Impact Advisors, LLC | 37,611 | $1.73M | 0.56% | +619+1.7% | Added |
| Freestone Grove Partners LP | 40,995 | $1.88M | 0.01% | +13,464+48.9% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 41,795 | $1.92M | 0.00% | −3,836−8.4% | Reduced |
| Gabelli Funds LLC | 43,200 | $1.98M | 0.01% | 00.0% | Unchanged |
| Thrivent Financial for Lutherans | 44,644 | $2.05M | 0.00% | −20,904−31.9% | Reduced |
| SG Americas Securities, LLC | 44,871 | $2.06M | 0.01% | +32,750+270.2% | Added |
| Bridge City Capital, LLC | 44,878 | $2.06M | 0.55% | −772−1.7% | Reduced |
| State of New Jersey Common Pension Fund D | 45,479 | $2.09M | 0.01% | +5,312+13.2% | Added |
| Davy Global Fund Management Ltd | 45,984 | $2.11M | 0.14% | −3,871−7.8% | Reduced |
| Magellan Asset Management Ltd | 46,034 | $2.11M | 0.03% | +2,520+5.8% | Added |
| Franklin Resources Inc | 46,430 | $2.13M | 0.00% | +21,763+88.2% | Added |
| Verition Fund Management LLC | 47,047 | $2.16M | 0.01% | +17,987+61.9% | Added |
| Citigroup Inc | 47,912 | $2.20M | 0.00% | −14,191−22.9% | Reduced |
| Mercer Global Advisors Inc | 49,588 | $2.28M | 0.00% | +2,339+5.0% | Added |
| Allianz Asset Management GmbH | 50,428 | $2.31M | 0.00% | +4,003+8.6% | Added |
| Clear Harbor Asset Management, LLC | 50,985 | $2.34M | 0.17% | 00.0% | Unchanged |
| TD Asset Management Inc | 51,888 | $2.38M | 0.00% | 00.0% | Unchanged |
| Exchange Traded Concepts, LLC | 51,993 | $2.39M | 0.02% | +1,538+3.0% | Added |
| BNP Paribas Arbitrage, SA | 53,635 | $2.46M | 0.00% | +16,635+45.0% | Added |
| Royal Bank of Canada | 53,841 | $2.47M | 0.00% | −74,683−58.1% | Reduced |
| Midwest Trust Co | 55,211 | $2.53M | 0.03% | −120−0.2% | Reduced |
| California State Teachers Retirement System | 56,761 | $2.60M | 0.00% | +2,345+4.3% | Added |
| Arrowstreet Capital, Limited Partnership | 57,173 | $2.62M | 0.00% | −21,009−26.9% | Reduced |
| Storebrand Asset Management AS | 57,549 | $2.64M | 0.01% | −2,041−3.4% | Reduced |
| Kennedy Capital Management, Inc. | 57,574 | $2.64M | 0.06% | +210.0% | Added |
| Rodgers Brothers Inc. | 57,775 | $2.65M | 0.33% | −3,300−5.4% | Reduced |
| New York State Teachers Retirement System | 62,602 | $2.87M | 0.01% | 00.0% | Unchanged |
| Maryland State Retirement & Pension System | 63,795 | $2.93M | 0.06% | −7,308−10.3% | Reduced |
| Trexquant Investment LP | 66,909 | $3.07M | 0.03% | −15,898−19.2% | Reduced |
| Wells Fargo & Company | 79,473 | $3.65M | 0.00% | +7,660+10.7% | Added |
| Martingale Asset Management L P | 82,597 | $3.79M | 0.10% | +519+0.6% | Added |
| Prudential Financial Inc | 83,340 | $3.82M | 0.00% | −7,280−8.0% | Reduced |
| Deutsche Bank AG | 83,980 | $3.85M | 0.00% | +7,057+9.2% | Added |
| Jacobs Levy Equity Management, Inc | 84,208 | $3.86M | 0.02% | +4,120+5.1% | Added |
| Crawford Investment Counsel Inc | 89,989 | $4.13M | 0.07% | +4,440+5.2% | Added |
| Meiji Yasuda Asset Management Co Ltd. | 92,071 | $4.23M | 0.20% | +2,040+2.3% | Added |
| Mariner, LLC | 95,747 | $4.39M | 0.01% | +27,306+39.9% | Added |
| Dark Forest Capital Management LP | 97,996 | $4.50M | 0.17% | +13,983+16.6% | Added |
| New Age Alpha Advisors, LLC | 99,477 | $4.56M | 0.19% | −4,941−4.7% | Reduced |
| Thematics Asset Management | 100,470 | $4.61M | 0.21% | −54,000−35.0% | Reduced |
| Federated Hermes, Inc. | 100,525 | $4.61M | 0.01% | +3,355+3.5% | Added |
| Northstar Asset Management Inc | 106,053 | $4.87M | 1.27% | +3,815+3.7% | Added |
| Barclays PLC | 109,885 | $5.04M | 0.00% | −27,626−20.1% | Reduced |
| Jane Street Group, LLC | 111,325 | $5.11M | 0.01% | −28,664−20.5% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 112,573 | $5.17M | 0.03% | −2,204−1.9% | Reduced |
| AQR Capital Management LLC | 114,154 | $5.24M | 0.00% | +40,562+55.1% | Added |
| Swiss National Bank | 115,400 | $5.30M | 0.00% | +1,800+1.6% | Added |
| Great West Life Assurance Co | 133,624 | $6.06M | 0.01% | +5,567+4.3% | Added |
| Alliancebernstein L.P. | 141,181 | $6.48M | 0.00% | +31,976+29.3% | Added |
| Bank of America Corp | 149,506 | $6.86M | 0.00% | −13,122−8.1% | Reduced |