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 |
|---|---|---|---|---|---|
| Arjuna Capital | 28,771 | $1.32M | 0.33% | −34,488−54.5% | Reduced |
| Vontobel Holding Ltd. | 27,743 | $1.27M | 0.00% | −2,225−7.4% | Reduced |
| Louisiana State Employees Retirement System | 27,400 | $1.26M | 0.02% | −400−1.4% | Reduced |
| Maven Securities LTD | 27,112 | $1.24M | 0.24% | +27,112 | New |
| Colony Group, LLC | 26,826 | $1.23M | 0.00% | −356−1.3% | Reduced |
| Balyasny Asset Management LLC | 26,625 | $1.22M | 0.00% | +26,625 | New |
| HighTower Advisors, LLC | 26,374 | $1.21M | 0.00% | −655−2.4% | Reduced |
| Janus Henderson Group PLC | 25,873 | $1.19M | 0.00% | +2,575+11.1% | Added |
| Canada Pension Plan Investment Board | 25,800 | $1.18M | 0.00% | 00.0% | Unchanged |
| CoreCommodity Management, LLC | 25,580 | $1.17M | 0.22% | −10,374−28.9% | Reduced |
| Bank of Montreal | 25,139 | $1.15M | 0.00% | −7,738−23.5% | Reduced |
| Intech Investment Management LLC | 23,894 | $1.10M | 0.01% | −2,090−8.0% | Reduced |
| Voloridge Investment Management, LLC | 22,318 | $1.02M | 0.00% | +22,318 | New |
| Van Eck Associates Corp | 21,700 | $996.0K | 0.00% | +1,378+6.8% | Added |
| Wulff, Hansen & Co. | 21,225 | $974.0K | 0.84% | −430−2.0% | Reduced |
| HRT Financial LP | 20,991 | $963.0K | 0.00% | +13,947+198.0% | Added |
| Handelsbanken Fonder AB | 20,915 | $960.0K | 0.00% | 00.0% | Unchanged |
| CenterBook Partners LP | 20,583 | $944.6K | 0.05% | −8,176−28.4% | Reduced |
| Canvas Wealth Advisors, LLC | 20,653 | $937.6K | 0.17% | +1,097+5.6% | Added |
| Two Sigma Investments, LP | 20,376 | $935.1K | 0.00% | +12,900+172.6% | Added |
| LPL Financial LLC | 20,175 | $925.8K | 0.00% | −1,154−5.4% | Reduced |
| Alps Advisors Inc | 20,173 | $925.7K | 0.01% | +571+2.9% | Added |
| Teton Advisors, LLC | 20,060 | $920.6K | 0.57% | +20,060 | New |
| Cerity Partners LLC | 19,850 | $910.9K | 0.00% | +3,530+21.6% | Added |
| Comerica Bank | 19,047 | $874.0K | 0.00% | −3,575−15.8% | Reduced |
| Brevan Howard Capital Management LP | 18,795 | $862.5K | 0.01% | +18,795 | New |
| Yousif Capital Management, LLC | 18,410 | $844.8K | 0.01% | −3,735−16.9% | Reduced |
| Quantinno Capital Management LP | 18,176 | $834.1K | 0.00% | +6,477+55.4% | Added |
| Gsa Capital Partners LLP | 17,924 | $823.0K | 0.07% | +17,924 | New |
| Cetera Investment Advisers | 17,793 | $816.6K | 0.00% | +4,540+34.3% | Added |
| Arizona State Retirement System | 17,627 | $808.9K | 0.00% | +266+1.5% | Added |
| Creative Planning | 17,335 | $795.5K | 0.00% | +2,033+13.3% | Added |
| Amalgamated Bank | 17,260 | $792.0K | 0.01% | +306+1.8% | Added |
| State of Tennessee, Treasury Department | 16,712 | $766.9K | 0.00% | −4,437−21.0% | Reduced |
| Teachers Retirement System of the State of Kentucky | 16,551 | $760.0K | 0.01% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 16,548 | $759.4K | 0.01% | +3,090+23.0% | Added |
| State Board of Administration of Florida Retirement System | 16,459 | $755.3K | 0.00% | 00.0% | Unchanged |
| Private Advisor Group, LLC | 15,933 | $731.2K | 0.00% | −90−0.6% | Reduced |
| South Dakota Investment Council | 15,915 | $730.0K | 0.01% | −3,600−18.4% | Reduced |
| Allspring Global Investments Holdings, LLC | 15,839 | $726.9K | 0.00% | −157−1.0% | Reduced |
| Mackenzie Financial Corp | 15,004 | $688.5K | 0.00% | +646+4.5% | Added |
| Penn Mutual Asset Management, LLC | 14,950 | $686.1K | 1.33% | 00.0% | Unchanged |
| Manchester Capital Management LLC | 14,881 | $682.9K | 0.09% | 00.0% | Unchanged |
| Capital Fund Management S.A. | 14,564 | $668.3K | 0.01% | −10,796−42.6% | Reduced |
| Engineers Gate Manager LP | 14,556 | $668.0K | 0.01% | +8,750+150.7% | Added |
| Nisa Investment Advisors, LLC | 14,292 | $655.9K | 0.00% | +501+3.6% | Added |
| KLP Kapitalforvaltning AS | 14,200 | $651.6K | 0.00% | 00.0% | Unchanged |
| Elo Mutual Pension Insurance Co | 14,007 | $642.8K | 0.01% | −127−0.9% | Reduced |
| Citadel Advisors LLC | 13,887 | $637.3K | 0.00% | −48,076−77.6% | Reduced |
| Farmers & Merchants Trust Co of Long Beach | 13,500 | $619.5K | 0.13% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 13,414 | $615.6K | 0.01% | −200−1.5% | Reduced |
| Atria Investments LLC | 13,251 | $608.1K | 0.01% | +6,676+101.5% | Added |
| Toroso Investments, LLC | 13,216 | $606.5K | 0.00% | −409−3.0% | Reduced |
| Commonwealth Equity Services, LLC | 13,161 | $604.0K | 0.00% | +268+2.1% | Added |
| Allworth Financial LP | 12,612 | $578.8K | 0.00% | +178+1.4% | Added |
| Wealth Enhancement Advisory Services, LLC | 12,432 | $576.2K | 0.00% | +1,115+9.9% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 12,531 | $575.0K | 0.00% | +4,475+55.5% | Added |
| Cullen Capital Management LLC | 12,487 | $573.0K | 0.01% | 00.0% | Unchanged |
| Stifel Financial Corp | 12,320 | $565.4K | 0.00% | −378−3.0% | Reduced |
| Pictet Asset Management Holding SA | 12,148 | $557.5K | 0.00% | −981−7.5% | Reduced |
| Public Employees Retirement System of Ohio | 11,886 | $545.4K | 0.00% | +19+0.2% | Added |
| Legato Capital Management LLC | 11,848 | $543.7K | 0.06% | 00.0% | Unchanged |
| Ethic Inc. | 11,520 | $528.7K | 0.01% | +928+8.8% | Added |
| Banque Pictet & Cie SA | 11,304 | $518.7K | 0.01% | −71−0.6% | Reduced |
| Clean Yield Group | 11,235 | $515.6K | 0.15% | −250−2.2% | Reduced |
| Voya Investment Management LLC | 11,197 | $513.8K | 0.00% | −5,549−33.1% | Reduced |
| Daiwa Securities Group Inc. | 10,924 | $501.0K | 0.00% | −1,204−9.9% | Reduced |
| Pathstone Holdings, LLC | 10,782 | $494.8K | 0.00% | +832+8.4% | Added |
| Natixis Advisors, L.P. | 10,587 | $486.0K | 0.00% | −472−4.3% | Reduced |
| Oxford Asset Management LLP | 10,575 | $485.3K | 0.16% | +5,419+105.1% | Added |
| D.A. Davidson & Co. | 10,547 | $484.0K | 0.00% | −658−5.9% | Reduced |
| Quantbot Technologies LP | 10,518 | $482.7K | 0.01% | +888+9.2% | Added |
| Resona Asset Management Co.,Ltd. | 10,447 | $479.4K | 0.00% | −864−7.6% | Reduced |
| Gitterman Wealth Management, LLC | 10,306 | $472.9K | 0.11% | +5,845+131.0% | Added |
| Capstone Investment Advisors, LLC | 10,263 | $471.0K | 0.00% | +10,263 | New |
| Captrust Financial Advisors | 10,188 | $467.5K | 0.00% | +10,188 | New |
| Ensign Peak Advisors, Inc | 10,114 | $464.1K | 0.00% | −13,900−57.9% | Reduced |
| CWM, LLC | 9,495 | $436.0K | 0.00% | +2,717+40.1% | Added |
| Federation des caisses Desjardins du Quebec | 9,008 | $413.4K | 0.00% | +983+12.2% | Added |
| Holocene Advisors, LP | 9,006 | $413.3K | 0.00% | −31,524−77.8% | Reduced |
| CI Private Wealth, LLC | 8,925 | $409.6K | 0.00% | +4,243+90.6% | Added |
| Sovereign Financial Group, Inc. | 8,852 | $406.2K | 0.08% | −868−8.9% | Reduced |
| Susquehanna International Group, LLP | 8,783 | $403.1K | 0.00% | −66,663−88.4% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 8,504 | $390.2K | 0.00% | +8,504 | New |
| ELCO Management Co., LLC | 7,943 | $364.5K | 0.19% | −959−10.8% | Reduced |
| Teacher Retirement System of Texas | 7,791 | $357.5K | 0.00% | −1,239−13.7% | Reduced |
| SEI Investments Co | 7,747 | $355.5K | 0.00% | +83+1.1% | Added |
| Public Employees Retirement Association of Colorado | 7,737 | $355.0K | 0.00% | 00.0% | Unchanged |
| Glenmede Investment Management, LP | 7,633 | $350.3K | 0.00% | +96+1.3% | Added |
| Blackhill Capital Inc | 7,600 | $348.8K | 0.02% | 00.0% | Unchanged |
| Green Alpha Advisors, LLC | 7,453 | $342.0K | 0.33% | −396−5.0% | Reduced |
| Sound Income Strategies, LLC | 7,210 | $337.1K | 0.02% | 00.0% | Unchanged |
| Edgestream Partners, L.P. | 7,253 | $332.8K | 0.01% | +7,253 | New |
| Wealth Architects, LLC | 7,235 | $332.0K | 0.03% | +287+4.1% | Added |
| Quadrature Capital Ltd | 7,231 | $332.0K | 0.00% | +7,231 | New |
| TRUE Private Wealth Advisors | 7,200 | $330.4K | 0.03% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 6,912 | $318.5K | 0.00% | +510+8.0% | Added |
| Meeder Advisory Services, Inc. | 6,916 | $317.4K | 0.01% | −15−0.2% | Reduced |
| STRS Ohio | 6,900 | $316.6K | 0.00% | −4,200−37.8% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 6,830 | $313.4K | 0.00% | 00.0% | Unchanged |