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, Q4 2025
Institutional positions in California Water Service Group as of Dec 31, 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
- 329
- −1 vs. Q3 2025
- Shares held
- 50.1M
- +185.2K (+0.4%) vs. Q3 2025
- Total value
- $2.17B
- −$119.4M (−5.2%) vs. Q3 2025
- New holders
- 38
- 97 more added
- Sold out
- 39
- 130 more reduced
7 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding California Water Service Group; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Alps Advisors Inc | 18,909 | $819.3K | 0.00% | −1,264−6.3% | Reduced |
| Wulff, Hansen & Co. | 19,625 | $850.4K | 0.71% | −1,600−7.5% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 19,956 | $864.7K | 0.02% | +19,956 | New |
| Teton Advisors, LLC | 20,060 | $869.2K | 0.60% | 00.0% | Unchanged |
| Engineers Gate Manager LP | 20,821 | $902.2K | 0.01% | +6,265+43.0% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 21,687 | $939.7K | 0.00% | −11,113−33.9% | Reduced |
| Bank of Montreal | 21,739 | $942.0K | 0.00% | −3,400−13.5% | Reduced |
| LPL Financial LLC | 21,979 | $952.3K | 0.00% | +1,804+8.9% | Added |
| Norges Bank | 22,114 | $958.2K | 0.00% | +22,114 | New |
| Handelsbanken Fonder AB | 22,716 | $984.0K | 0.00% | +1,801+8.6% | Added |
| Two Sigma Investments, LP | 23,076 | $999.9K | 0.00% | +2,700+13.3% | Added |
| Canvas Wealth Advisors, LLC | 23,084 | $1.00M | 0.17% | +2,431+11.8% | Added |
| SEI Investments Co | 23,086 | $1.00M | 0.00% | +15,339+198.0% | Added |
| Van Eck Associates Corp | 23,105 | $1.00M | 0.00% | +1,405+6.5% | Added |
| Davy Global Fund Management Ltd | 23,290 | $1.01M | 0.07% | −22,694−49.4% | Reduced |
| Voya Investment Management LLC | 23,704 | $1.03M | 0.00% | +12,507+111.7% | Added |
| Intech Investment Management LLC | 23,894 | $1.04M | 0.01% | 00.0% | Unchanged |
| Capital Fund Management S.A. | 24,277 | $1.05M | 0.01% | +9,713+66.7% | Added |
| HighTower Advisors, LLC | 25,300 | $1.10M | 0.00% | −1,074−4.1% | Reduced |
| Janus Henderson Group PLC | 25,873 | $1.12M | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 25,938 | $1.12M | 0.00% | +13,326+105.7% | Added |
| Colony Group, LLC | 26,362 | $1.14M | 0.00% | −464−1.7% | Reduced |
| Balyasny Asset Management LLC | 26,758 | $1.16M | 0.00% | +133+0.5% | Added |
| Dark Forest Capital Management LP | 27,119 | $1.18M | 0.05% | −70,877−72.3% | Reduced |
| Louisiana State Employees Retirement System | 27,300 | $1.18M | 0.02% | −100−0.4% | Reduced |
| Manufacturers Life Insurance Company, The | 27,307 | $1.18M | 0.00% | −1,711−5.9% | Reduced |
| Maven Securities LTD | 27,611 | $1.20M | 0.15% | +499+1.8% | Added |
| Arjuna Capital | 28,052 | $1.22M | 0.30% | −719−2.5% | Reduced |
| Kennedy Capital Management, Inc. | 28,915 | $1.25M | 0.03% | −28,659−49.8% | Reduced |
| South Dakota Investment Council | 29,915 | $1.30M | 0.02% | +14,000+88.0% | Added |
| New York State Common Retirement Fund | 30,544 | $1.32M | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 31,601 | $1.37M | 0.00% | −22,034−41.1% | Reduced |
| CoreCommodity Management, LLC | 31,684 | $1.37M | 0.29% | +6,104+23.9% | Added |
| State of Alaska, Department of Revenue | 32,163 | $1.39M | 0.01% | +376+1.2% | Added |
| Canada Pension Plan Investment Board | 32,700 | $1.42M | 0.00% | +6,900+26.7% | Added |
| MetLife Investment Management | 33,337 | $1.44M | 0.01% | −1,085−3.2% | Reduced |
| Vontobel Holding Ltd. | 33,616 | $1.46M | 0.00% | +5,873+21.2% | Added |
| Macquarie Group Ltd | 33,632 | $1.46M | 0.01% | −145−0.4% | Reduced |
| Illinois Municipal Retirement Fund | 33,835 | $1.47M | 0.02% | +2,329+7.4% | Added |
| State of Wisconsin Investment Board | 33,894 | $1.47M | 0.00% | −2,268−6.3% | Reduced |
| HRT Financial LP | 34,201 | $1.48M | 0.00% | +13,210+62.9% | Added |
| CenterBook Partners LP | 34,261 | $1.48M | 0.07% | +13,678+66.5% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 35,631 | $1.55M | 0.00% | +23,100+184.3% | Added |
| XTX Topco Ltd | 36,819 | $1.60M | 0.04% | +36,819 | New |
| Nia Impact Advisors, LLC | 37,216 | $1.61M | 0.54% | −395−1.1% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 37,324 | $1.62M | 0.00% | +1,914+5.4% | Added |
| Zimmer Partners, LP | 38,500 | $1.67M | 0.04% | +38,500 | New |
| Bridge City Capital, LLC | 38,576 | $1.67M | 0.49% | −6,302−14.0% | Reduced |
| SG Americas Securities, LLC | 39,820 | $1.73M | 0.00% | −5,051−11.3% | Reduced |
| Point72 Asset Management, L.P. | 40,192 | $1.74M | 0.00% | +40,192 | New |
| Thrivent Financial for Lutherans | 42,607 | $1.85M | 0.00% | −2,037−4.6% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 43,130 | $1.87M | 0.00% | +1,335+3.2% | Added |
| Quest Partners LLC | 43,190 | $1.87M | 0.10% | +11,233+35.2% | Added |
| Gabelli Funds LLC | 43,200 | $1.87M | 0.01% | 00.0% | Unchanged |
| Jane Street Group, LLC | 43,384 | $1.88M | 0.00% | −67,941−61.0% | Reduced |
| State of New Jersey Common Pension Fund D | 47,930 | $2.08M | 0.01% | +2,451+5.4% | Added |
| Magellan Asset Management Ltd | 48,734 | $2.11M | 0.03% | +2,700+5.9% | Added |
| Clear Harbor Asset Management, LLC | 49,660 | $2.15M | 0.15% | −1,325−2.6% | Reduced |
| Arrowstreet Capital, Limited Partnership | 49,909 | $2.16M | 0.00% | −7,264−12.7% | Reduced |
| Franklin Resources Inc | 50,393 | $2.18M | 0.00% | +3,963+8.5% | Added |
| Exchange Traded Concepts, LLC | 51,375 | $2.23M | 0.02% | −618−1.2% | Reduced |
| Citigroup Inc | 52,051 | $2.26M | 0.00% | +4,139+8.6% | Added |
| Rodgers Brothers Inc. | 52,175 | $2.26M | 0.27% | −5,600−9.7% | Reduced |
| Allianz Asset Management GmbH | 53,544 | $2.32M | 0.00% | +3,116+6.2% | Added |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 54,407 | $2.36M | 0.08% | +54,407 | New |
| Midwest Trust Co | 54,428 | $2.36M | 0.03% | −783−1.4% | Reduced |
| California State Teachers Retirement System | 56,718 | $2.46M | 0.00% | −43−0.1% | Reduced |
| Storebrand Asset Management AS | 57,549 | $2.49M | 0.01% | 00.0% | Unchanged |
| TD Asset Management Inc | 58,038 | $2.51M | 0.00% | +6,150+11.9% | Added |
| AQR Capital Management LLC | 61,139 | $2.65M | 0.00% | −53,015−46.4% | Reduced |
| New York State Teachers Retirement System | 63,002 | $2.73M | 0.01% | +400+0.6% | Added |
| Maryland State Retirement & Pension System | 64,497 | $2.79M | 0.06% | +702+1.1% | Added |
| D. E. Shaw & Co., Inc. | 66,191 | $2.87M | 0.00% | +29,833+82.1% | Added |
| Prudential Financial Inc | 69,833 | $3.04M | 0.00% | −13,507−16.2% | Reduced |
| Price T Rowe Associates Inc | 74,380 | $3.22M | 0.00% | −77,021−50.9% | Reduced |
| Jacobs Levy Equity Management, Inc | 80,919 | $3.51M | 0.01% | −3,289−3.9% | Reduced |
| Martingale Asset Management L P | 81,447 | $3.53M | 0.09% | −1,150−1.4% | Reduced |
| Northstar Asset Management Inc | 82,861 | $3.59M | 0.93% | −23,192−21.9% | Reduced |
| Alliancebernstein L.P. | 83,254 | $3.61M | 0.00% | −57,927−41.0% | Reduced |
| Meiji Yasuda Asset Management Co Ltd. | 84,799 | $3.67M | 0.18% | −7,272−7.9% | Reduced |
| Deutsche Bank AG | 86,990 | $3.77M | 0.00% | +3,010+3.6% | Added |
| Mariner, LLC | 87,097 | $3.77M | 0.00% | −8,650−9.0% | Reduced |
| Millennium Management LLC | 90,157 | $3.91M | 0.00% | −277,917−75.5% | Reduced |
| Crawford Investment Counsel Inc | 91,989 | $3.99M | 0.07% | +2,000+2.2% | Added |
| Great West Life Assurance Co | 97,181 | $4.21M | 0.01% | −36,443−27.3% | Reduced |
| Wells Fargo & Company | 98,602 | $4.27M | 0.00% | +19,129+24.1% | Added |
| Bank of America Corp | 99,074 | $4.29M | 0.00% | −50,432−33.7% | Reduced |
| Renaissance Technologies LLC | 111,900 | $4.85M | 0.01% | −189,216−62.8% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 112,152 | $4.86M | 0.02% | −421−0.4% | Reduced |
| Swiss National Bank | 117,500 | $5.09M | 0.00% | +2,100+1.8% | Added |
| Federated Hermes, Inc. | 122,020 | $5.29M | 0.01% | +21,495+21.4% | Added |
| Barclays PLC | 122,521 | $5.31M | 0.00% | +12,636+11.5% | Added |
| American Century Companies Inc | 128,016 | $5.55M | 0.00% | −99,806−43.8% | Reduced |
| Trexquant Investment LP | 135,592 | $5.88M | 0.05% | +68,683+102.7% | Added |
| Ameriprise Financial Inc | 147,110 | $6.37M | 0.00% | −9,334−6.0% | Reduced |
| ProShare Advisors LLC | 150,627 | $6.53M | 0.01% | +985+0.7% | Added |
| Citadel Advisors LLC | 172,730 | $7.48M | 0.01% | +158,843+1,143.8% | Added |
| Rhumbline Advisers | 173,665 | $7.52M | 0.01% | −16,030−8.5% | Reduced |
| Aptus Capital Advisors, LLC | 179,202 | $7.76M | 0.07% | +715+0.4% | Added |
| Public Sector Pension Investment Board | 206,197 | $8.93M | 0.03% | −26,235−11.3% | Reduced |