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, Q1 2026
Institutional positions in California Water Service Group as of Mar 31, 2026. 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
- 339
- +15 vs. Q4 2025
- Shares held
- 51.3M
- +8.55M (+20.0%) vs. Q4 2025
- Total value
- $2.32B
- +$473.4M (+25.6%) vs. Q4 2025
- New holders
- 46
- 140 more added
- Sold out
- 31
- 88 more reduced
5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding California Water Service Group; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Canada Pension Plan Investment Board | 32,700 | $1.48M | 0.00% | 00.0% | Unchanged |
| Kennedy Capital Management, Inc. | 31,770 | $1.44M | 0.03% | +2,855+9.9% | Added |
| State of Alaska, Department of Revenue | 31,223 | $1.41M | 0.02% | −940−2.9% | Reduced |
| Illinois Municipal Retirement Fund | 30,703 | $1.39M | 0.02% | −3,132−9.3% | Reduced |
| New York State Common Retirement Fund | 30,544 | $1.38M | 0.00% | 00.0% | Unchanged |
| Fifth Third Bancorp | 29,884 | $1.35M | 0.00% | +29,559+9,095.1% | Added |
| Arjuna Capital | 28,638 | $1.30M | 0.33% | +586+2.1% | Added |
| CoreCommodity Management, LLC | 28,561 | $1.29M | 0.24% | −3,123−9.9% | Reduced |
| Susquehanna International Group, LLP | 28,312 | $1.28M | 0.00% | +23,628+504.4% | Added |
| Colony Group, LLC | 28,180 | $1.28M | 0.00% | +1,818+6.9% | Added |
| HighTower Advisors, LLC | 27,852 | $1.26M | 0.00% | +2,552+10.1% | Added |
| State of Wisconsin Investment Board | 26,752 | $1.21M | 0.00% | −7,142−21.1% | Reduced |
| Louisiana State Employees Retirement System | 26,400 | $1.20M | 0.02% | −900−3.3% | Reduced |
| Manufacturers Life Insurance Company, The | 26,383 | $1.20M | 0.00% | −924−3.4% | Reduced |
| Allworth Financial LP | 26,265 | $1.19M | 0.00% | +327+1.3% | Added |
| Elo Mutual Pension Insurance Co | 26,099 | $1.18M | 0.02% | +26,099 | New |
| Janus Henderson Group PLC | 25,873 | $1.17M | 0.00% | 00.0% | Unchanged |
| Vanguard Global Advisers, LLC | 25,836 | $1.17M | 0.00% | +25,836 | New |
| Voloridge Investment Management, LLC | 25,216 | $1.14M | 0.00% | +25,216 | New |
| Davy Global Fund Management Ltd | 24,268 | $1.10M | 0.08% | +978+4.2% | Added |
| Van Eck Associates Corp | 24,116 | $1.09M | 0.00% | +1,011+4.4% | Added |
| LPL Financial LLC | 22,892 | $1.04M | 0.00% | +913+4.2% | Added |
| Handelsbanken Fonder AB | 22,716 | $1.03M | 0.00% | 00.0% | Unchanged |
| Canvas Wealth Advisors, LLC | 22,624 | $1.03M | 0.17% | −460−2.0% | Reduced |
| BNP Paribas Arbitrage, SA | 22,485 | $1.02M | 0.00% | −9,116−28.8% | Reduced |
| Bank of Montreal | 22,141 | $1.00M | 0.00% | +402+1.8% | Added |
| Campbell & CO Investment Adviser LLC | 21,566 | $977.8K | 0.06% | +8,329+62.9% | Added |
| CenterBook Partners LP | 20,763 | $941.4K | 0.05% | −13,498−39.4% | Reduced |
| Freestone Grove Partners LP | 20,524 | $930.6K | 0.01% | +1,882+10.1% | Added |
| Y-Intercept (Hong Kong) Ltd | 20,082 | $910.5K | 0.02% | +126+0.6% | Added |
| Teton Advisors, LLC | 20,060 | $909.5K | 0.64% | 00.0% | Unchanged |
| Allspring Global Investments Holdings, LLC | 19,360 | $881.1K | 0.00% | +2,004+11.5% | Added |
| XTX Topco Ltd | 19,379 | $878.6K | 0.02% | −17,440−47.4% | Reduced |
| Wulff, Hansen & Co. | 19,375 | $878.5K | 0.90% | −250−1.3% | Reduced |
| Cerity Partners LLC | 19,116 | $866.7K | 0.00% | +1,379+7.8% | Added |
| Creative Planning | 18,240 | $827.0K | 0.00% | +5,278+40.7% | Added |
| Alps Advisors Inc | 18,035 | $817.7K | 0.00% | −874−4.6% | Reduced |
| Virtue Capital Management, LLC | 17,578 | $806.9K | 0.12% | +12,845+271.4% | Added |
| Amalgamated Bank | 17,163 | $778.0K | 0.01% | −156−0.9% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 16,681 | $756.3K | 0.01% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 16,472 | $746.8K | 0.00% | −5,215−24.0% | Reduced |
| State Board of Administration of Florida Retirement System | 16,459 | $746.3K | 0.00% | 00.0% | Unchanged |
| Abacus Wealth Partners, LLC | 16,386 | $742.9K | 0.07% | +3,867+30.9% | Added |
| Arizona State Retirement System | 16,380 | $742.7K | 0.00% | −531−3.1% | Reduced |
| Yousif Capital Management, LLC | 15,881 | $720.0K | 0.01% | −234−1.5% | Reduced |
| Quantinno Capital Management LP | 14,895 | $675.4K | 0.00% | +1,740+13.2% | Added |
| Federation des caisses Desjardins du Quebec | 14,845 | $673.1K | 0.00% | +3,655+32.7% | Added |
| Teachers Retirement System of the State of Kentucky | 14,769 | $670.0K | 0.01% | 00.0% | Unchanged |
| Ethic Inc. | 14,472 | $656.2K | 0.01% | +4,081+39.3% | Added |
| Commonwealth Equity Services, LLC | 14,345 | $650.4K | 0.00% | +616+4.5% | Added |
| KLP Kapitalforvaltning AS | 14,200 | $643.8K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 14,126 | $640.5K | 0.00% | +148+1.1% | Added |
| Citigroup Inc | 13,849 | $627.9K | 0.00% | −38,202−73.4% | Reduced |
| Intech Investment Management LLC | 13,840 | $627.5K | 0.01% | −10,054−42.1% | Reduced |
| Cetera Investment Advisers | 13,714 | $621.8K | 0.00% | +761+5.9% | Added |
| Oregon Public Employees Retirement Fund | 13,614 | $617.3K | 0.01% | 00.0% | Unchanged |
| Toroso Investments, LLC | 13,423 | $608.6K | 0.00% | +309+2.4% | Added |
| Cullen Capital Management LLC | 13,079 | $593.0K | 0.01% | +5,954+83.6% | Added |
| Atria Investments LLC | 13,079 | $593.0K | 0.01% | +981+8.1% | Added |
| Farmers & Merchants Trust Co of Long Beach | 13,000 | $589.4K | 0.14% | 00.0% | Unchanged |
| Mercer Global Advisors Inc | 12,667 | $574.3K | 0.00% | −425−3.2% | Reduced |
| State of Tennessee, Treasury Department | 12,535 | $568.3K | 0.00% | 00.0% | Unchanged |
| Public Employees Retirement System of Ohio | 11,921 | $540.5K | 0.00% | +48+0.4% | Added |
| Royal Bank of Canada | 11,206 | $508.0K | 0.00% | −1,940−14.8% | Reduced |
| Pictet Asset Management Holding SA | 11,184 | $507.1K | 0.00% | +1,165+11.6% | Added |
| Captrust Financial Advisors | 11,047 | $500.9K | 0.00% | +1,668+17.8% | Added |
| D.A. Davidson & Co. | 10,894 | $493.9K | 0.00% | +411+3.9% | Added |
| CWM, LLC | 10,873 | $493.0K | 0.00% | +5,047+86.6% | Added |
| Perigon Wealth Management, LLC | 10,692 | $484.8K | 0.01% | +486+4.8% | Added |
| Wealth Enhancement Advisory Services, LLC | 10,445 | $483.1K | 0.00% | +495+5.0% | Added |
| Daiwa Securities Group Inc. | 10,654 | $483.1K | 0.00% | −361−3.3% | Reduced |
| Quadrature Capital Ltd | 10,524 | $477.2K | 0.01% | +2,111+25.1% | Added |
| Resona Asset Management Co.,Ltd. | 10,359 | $469.7K | 0.00% | 00.0% | Unchanged |
| Natixis Advisors, L.P. | 10,135 | $460.0K | 0.00% | +10,135 | New |
| Clean Yield Group | 10,135 | $459.5K | 0.13% | −800−7.3% | Reduced |
| Brevan Howard Capital Management LP | 9,597 | $435.1K | 0.00% | +9,597 | New |
| Tower Research Capital LLC (TRC) | 9,131 | $414.0K | 0.01% | +8,281+974.2% | Added |
| Sovereign Financial Group, Inc. | 8,788 | $398.4K | 0.07% | −12−0.1% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 8,315 | $377.0K | 0.00% | +8,315 | New |
| Entropy Technologies, LP | 8,134 | $368.8K | 0.02% | −119−1.4% | Reduced |
| Wedbush Securities Inc | 8,100 | $367.0K | 0.01% | +8,100 | New |
| Pathstone Holdings, LLC | 8,002 | $362.8K | 0.00% | −1,501−15.8% | Reduced |
| Baird Financial Group, Inc. | 7,913 | $358.8K | 0.00% | +490+6.6% | Added |
| Green Alpha Advisors, LLC | 7,843 | $355.6K | 0.35% | −310−3.8% | Reduced |
| Public Employees Retirement Association of Colorado | 7,737 | $351.0K | 0.00% | 00.0% | Unchanged |
| Everence Capital Management Inc | 7,671 | $348.0K | 0.02% | +1,991+35.1% | Added |
| Blackhill Capital Inc | 7,600 | $344.6K | 0.02% | 00.0% | Unchanged |
| Glenmede Trust Co NA | 7,546 | $342.1K | 0.00% | −44−0.6% | Reduced |
| Sound Income Strategies, LLC | 7,210 | $328.1K | 0.02% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 7,217 | $327.3K | 0.00% | +1,337+22.7% | Added |
| JustInvest LLC | 7,195 | $326.2K | 0.00% | +7,195 | New |
| Spirit of America Management Corp | 7,150 | $324.2K | 0.06% | +650+10.0% | Added |
| Mirabella Financial Services LLP | 7,017 | $318.2K | 0.03% | +7,017 | New |
| Ketron Financial | 6,900 | $312.8K | 0.11% | 00.0% | Unchanged |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 6,830 | $309.7K | 0.00% | 00.0% | Unchanged |
| Mutual of America Capital Management LLC | 6,820 | $309.2K | 0.00% | +9+0.1% | Added |
| Wealth Architects, LLC | 6,755 | $306.3K | 0.03% | −306−4.3% | Reduced |
| Maple Capital Management, Inc. | 6,667 | $302.3K | 0.02% | 00.0% | Unchanged |
| PFG Investments, LLC | 6,635 | $300.8K | 0.01% | +30.0% | Added |
| Ensign Peak Advisors, Inc | 6,614 | $299.9K | 0.00% | +1,700+34.6% | Added |