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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 10,681,351 | $462.8M | 0.01% | +233,117+2.2% | Added |
| Vanguard Group Inc | 7,346,457 | $318.3M | 0.00% | +34,155+0.5% | Added |
| T. Rowe Price Investment Management, Inc. | 3,337,205 | $144.6M | 0.09% | +36,296+1.1% | Added |
| State Street Corp | 3,029,950 | $131.3M | 0.00% | −71,051−2.3% | Reduced |
| Amundi | 2,738,993 | $118.6M | 0.03% | +462,394+20.3% | Added |
| Nuance Investments, LLC | 1,825,390 | $79.1M | 8.71% | +60,931+3.5% | Added |
| FMR LLC | 1,796,148 | $77.8M | 0.00% | +393,016+28.0% | Added |
| Geode Capital Management, LLC | 1,420,950 | $61.6M | 0.00% | +4,613+0.3% | Added |
| First Trust Advisors LP | 1,367,978 | $59.3M | 0.04% | −36,342−2.6% | Reduced |
| Dimensional Fund Advisors LP | 1,153,931 | $50.0M | 0.01% | +4,913+0.4% | Added |
| Invesco Ltd. | 954,234 | $41.3M | 0.00% | +57,170+6.4% | Added |
| Morgan Stanley | 767,034 | $33.2M | 0.00% | −35,091−4.4% | Reduced |
| Legal & General Group Plc | 763,847 | $33.1M | 0.01% | +3,586+0.5% | Added |
| Cbre Clarion Securities LLC | 722,345 | $31.3M | 0.46% | −7,918−1.1% | Reduced |
| Charles Schwab Investment Management Inc | 710,668 | $30.8M | 0.00% | −7,887−1.1% | Reduced |
| Northern Trust Corp | 611,552 | $26.5M | 0.00% | −43,702−6.7% | Reduced |
| Bank of New York Mellon Corp | 504,836 | $21.9M | 0.00% | −63,967−11.2% | Reduced |
| KBC Group NV | 446,627 | $19.4M | 0.04% | 00.0% | Unchanged |
| Nuveen, LLC | 440,074 | $19.1M | 0.00% | +48,772+12.5% | Added |
| Triodos Investment Management BV | 414,000 | $18.0M | 1.30% | −79,000−16.0% | Reduced |
| Beck Bode, LLC | 388,418 | $16.8M | 2.80% | −13,843−3.4% | Reduced |
| Victory Capital Management Inc | 315,465 | $13.7M | 0.01% | +47,365+17.7% | Added |
| Principal Financial Group Inc | 284,023 | $12.3M | 0.01% | −3,682−1.3% | Reduced |
| Raymond James Financial Inc | 281,888 | $12.2M | 0.00% | −16,394−5.5% | Reduced |
| ExodusPoint Capital Management, LP | 238,840 | $10.3M | 0.12% | +238,840 | New |
| UBS Asset Management Americas Inc | 234,643 | $10.2M | 0.00% | −7,134−3.0% | Reduced |
| Goldman Sachs Group Inc | 226,290 | $9.81M | 0.00% | −33,702−13.0% | Reduced |
| JPMorgan Chase & Co | 225,886 | $9.79M | 0.00% | −51,359−18.5% | Reduced |
| UBS Group AG | 214,279 | $9.28M | 0.00% | −25,833−10.8% | Reduced |
| Public Sector Pension Investment Board | 206,197 | $8.93M | 0.03% | −26,235−11.3% | Reduced |
| Aptus Capital Advisors, LLC | 179,202 | $7.76M | 0.07% | +715+0.4% | Added |
| Rhumbline Advisers | 173,665 | $7.52M | 0.01% | −16,030−8.5% | Reduced |
| Citadel Advisors LLC | 172,730 | $7.48M | 0.01% | +158,843+1,143.8% | Added |
| ProShare Advisors LLC | 150,627 | $6.53M | 0.01% | +985+0.7% | Added |
| Ameriprise Financial Inc | 147,110 | $6.37M | 0.00% | −9,334−6.0% | Reduced |
| Trexquant Investment LP | 135,592 | $5.88M | 0.05% | +68,683+102.7% | Added |
| American Century Companies Inc | 128,016 | $5.55M | 0.00% | −99,806−43.8% | Reduced |
| Barclays PLC | 122,521 | $5.31M | 0.00% | +12,636+11.5% | Added |
| Federated Hermes, Inc. | 122,020 | $5.29M | 0.01% | +21,495+21.4% | Added |
| Swiss National Bank | 117,500 | $5.09M | 0.00% | +2,100+1.8% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 112,152 | $4.86M | 0.02% | −421−0.4% | Reduced |
| Renaissance Technologies LLC | 111,900 | $4.85M | 0.01% | −189,216−62.8% | Reduced |
| Bank of America Corp | 99,074 | $4.29M | 0.00% | −50,432−33.7% | Reduced |
| Wells Fargo & Company | 98,602 | $4.27M | 0.00% | +19,129+24.1% | Added |
| Great West Life Assurance Co | 97,181 | $4.21M | 0.01% | −36,443−27.3% | Reduced |
| Crawford Investment Counsel Inc | 91,989 | $3.99M | 0.07% | +2,000+2.2% | Added |
| Millennium Management LLC | 90,157 | $3.91M | 0.00% | −277,917−75.5% | Reduced |
| Mariner, LLC | 87,097 | $3.77M | 0.00% | −8,650−9.0% | Reduced |
| Deutsche Bank AG | 86,990 | $3.77M | 0.00% | +3,010+3.6% | Added |
| Meiji Yasuda Asset Management Co Ltd. | 84,799 | $3.67M | 0.18% | −7,272−7.9% | Reduced |
| Alliancebernstein L.P. | 83,254 | $3.61M | 0.00% | −57,927−41.0% | Reduced |
| Northstar Asset Management Inc | 82,861 | $3.59M | 0.93% | −23,192−21.9% | Reduced |
| Martingale Asset Management L P | 81,447 | $3.53M | 0.09% | −1,150−1.4% | Reduced |
| Jacobs Levy Equity Management, Inc | 80,919 | $3.51M | 0.01% | −3,289−3.9% | Reduced |
| Price T Rowe Associates Inc | 74,380 | $3.22M | 0.00% | −77,021−50.9% | Reduced |
| Prudential Financial Inc | 69,833 | $3.04M | 0.00% | −13,507−16.2% | Reduced |
| D. E. Shaw & Co., Inc. | 66,191 | $2.87M | 0.00% | +29,833+82.1% | Added |
| Maryland State Retirement & Pension System | 64,497 | $2.79M | 0.06% | +702+1.1% | Added |
| New York State Teachers Retirement System | 63,002 | $2.73M | 0.01% | +400+0.6% | Added |
| AQR Capital Management LLC | 61,139 | $2.65M | 0.00% | −53,015−46.4% | Reduced |
| TD Asset Management Inc | 58,038 | $2.51M | 0.00% | +6,150+11.9% | Added |
| Storebrand Asset Management AS | 57,549 | $2.49M | 0.01% | 00.0% | Unchanged |
| California State Teachers Retirement System | 56,718 | $2.46M | 0.00% | −43−0.1% | Reduced |
| Midwest Trust Co | 54,428 | $2.36M | 0.03% | −783−1.4% | Reduced |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 54,407 | $2.36M | 0.08% | +54,407 | New |
| Allianz Asset Management GmbH | 53,544 | $2.32M | 0.00% | +3,116+6.2% | Added |
| Rodgers Brothers Inc. | 52,175 | $2.26M | 0.27% | −5,600−9.7% | Reduced |
| Citigroup Inc | 52,051 | $2.26M | 0.00% | +4,139+8.6% | Added |
| Exchange Traded Concepts, LLC | 51,375 | $2.23M | 0.02% | −618−1.2% | Reduced |
| Franklin Resources Inc | 50,393 | $2.18M | 0.00% | +3,963+8.5% | Added |
| Arrowstreet Capital, Limited Partnership | 49,909 | $2.16M | 0.00% | −7,264−12.7% | Reduced |
| Clear Harbor Asset Management, LLC | 49,660 | $2.15M | 0.15% | −1,325−2.6% | Reduced |
| Magellan Asset Management Ltd | 48,734 | $2.11M | 0.03% | +2,700+5.9% | Added |
| State of New Jersey Common Pension Fund D | 47,930 | $2.08M | 0.01% | +2,451+5.4% | Added |
| Jane Street Group, LLC | 43,384 | $1.88M | 0.00% | −67,941−61.0% | Reduced |
| Gabelli Funds LLC | 43,200 | $1.87M | 0.01% | 00.0% | Unchanged |
| Quest Partners LLC | 43,190 | $1.87M | 0.10% | +11,233+35.2% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 43,130 | $1.87M | 0.00% | +1,335+3.2% | Added |
| Thrivent Financial for Lutherans | 42,607 | $1.85M | 0.00% | −2,037−4.6% | Reduced |
| Point72 Asset Management, L.P. | 40,192 | $1.74M | 0.00% | +40,192 | New |
| SG Americas Securities, LLC | 39,820 | $1.73M | 0.00% | −5,051−11.3% | Reduced |
| Bridge City Capital, LLC | 38,576 | $1.67M | 0.49% | −6,302−14.0% | Reduced |
| Zimmer Partners, LP | 38,500 | $1.67M | 0.04% | +38,500 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 37,324 | $1.62M | 0.00% | +1,914+5.4% | Added |
| Nia Impact Advisors, LLC | 37,216 | $1.61M | 0.54% | −395−1.1% | Reduced |
| XTX Topco Ltd | 36,819 | $1.60M | 0.04% | +36,819 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 35,631 | $1.55M | 0.00% | +23,100+184.3% | Added |
| CenterBook Partners LP | 34,261 | $1.48M | 0.07% | +13,678+66.5% | Added |
| HRT Financial LP | 34,201 | $1.48M | 0.00% | +13,210+62.9% | Added |
| State of Wisconsin Investment Board | 33,894 | $1.47M | 0.00% | −2,268−6.3% | Reduced |
| Illinois Municipal Retirement Fund | 33,835 | $1.47M | 0.02% | +2,329+7.4% | Added |
| Macquarie Group Ltd | 33,632 | $1.46M | 0.01% | −145−0.4% | Reduced |
| Vontobel Holding Ltd. | 33,616 | $1.46M | 0.00% | +5,873+21.2% | Added |
| MetLife Investment Management | 33,337 | $1.44M | 0.01% | −1,085−3.2% | Reduced |
| Canada Pension Plan Investment Board | 32,700 | $1.42M | 0.00% | +6,900+26.7% | Added |
| State of Alaska, Department of Revenue | 32,163 | $1.39M | 0.01% | +376+1.2% | Added |
| CoreCommodity Management, LLC | 31,684 | $1.37M | 0.29% | +6,104+23.9% | Added |
| BNP Paribas Arbitrage, SA | 31,601 | $1.37M | 0.00% | −22,034−41.1% | Reduced |
| New York State Common Retirement Fund | 30,544 | $1.32M | 0.00% | 00.0% | Unchanged |
| South Dakota Investment Council | 29,915 | $1.30M | 0.02% | +14,000+88.0% | Added |