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, Q2 2026
Institutional positions in California Water Service Group as of Jun 30, 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
- 346
- +11 vs. Q1 2026
- Shares held
- 55.2M
- +4.01M (+7.8%) vs. Q1 2026
- Total value
- $2.69B
- +$364.8M (+15.7%) vs. Q1 2026
- New holders
- 54
- 138 more added
- Sold out
- 43
- 98 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding California Water Service Group; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 10,755,498 | $523.3M | 0.01% | +446,943+4.3% | Added |
| Vanguard Portfolio Management LLC | 4,379,671 | $213.1M | 0.01% | +89,998+2.1% | Added |
| T. Rowe Price Investment Management, Inc. | 3,517,105 | $171.1M | 0.11% | +98,811+2.9% | Added |
| Amundi | 3,486,859 | $169.7M | 0.04% | +15,862+0.5% | Added |
| State Street Corp | 3,266,850 | $158.9M | 0.00% | +164,191+5.3% | Added |
| Vanguard Capital Management LLC | 2,690,663 | $130.9M | 0.00% | +25,438+1.0% | Added |
| ATLAS Infrastructure Partners (UK) Ltd. | 1,984,605 | $96.6M | 2.93% | +1,984,605 | New |
| Geode Capital Management, LLC | 1,555,391 | $75.7M | 0.00% | +79,986+5.4% | Added |
| First Trust Advisors LP | 1,300,055 | $63.2M | 0.04% | −54,110−4.0% | Reduced |
| FMR LLC | 1,281,406 | $62.3M | 0.00% | −108,608−7.8% | Reduced |
| Dimensional Fund Advisors LP | 1,174,914 | $57.2M | 0.01% | +16,555+1.4% | Added |
| Nuance Investments, LLC | 1,096,077 | $53.3M | 9.07% | −507,671−31.7% | Reduced |
| Invesco Ltd. | 974,775 | $47.4M | 0.00% | −27,457−2.7% | Reduced |
| Morgan Stanley | 948,112 | $46.1M | 0.00% | −170,593−15.2% | Reduced |
| Legal & General Group Plc | 807,510 | $39.3M | 0.01% | +29,968+3.9% | Added |
| Antipodes Partners Ltd | 753,386 | $36.7M | 0.67% | +753,386 | New |
| Nomura Asset Management International Inc. | 747,216 | $36.4M | 0.05% | +747,216 | New |
| Charles Schwab Investment Management Inc | 725,290 | $35.3M | 0.00% | −3,166−0.4% | Reduced |
| Northern Trust Corp | 708,763 | $34.5M | 0.00% | +71,460+11.2% | Added |
| AQR Capital Management LLC | 681,791 | $33.2M | 0.01% | +512,060+301.7% | Added |
| KBC Group NV | 577,247 | $28.1M | 0.06% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 527,076 | $25.6M | 0.00% | +20,374+4.0% | Added |
| Triodos Investment Management BV | 493,000 | $24.0M | 1.46% | +79,000+19.1% | Added |
| Beck Bode, LLC | 426,692 | $20.8M | 3.14% | +14,978+3.6% | Added |
| Vanguard Fiduciary Trust Co | 397,640 | $19.3M | 0.00% | +11,228+2.9% | Added |
| Arrowstreet Capital, Limited Partnership | 365,464 | $17.8M | 0.01% | +107,494+41.7% | Added |
| Victory Capital Management Inc | 331,132 | $16.1M | 0.01% | +9,817+3.1% | Added |
| Principal Financial Group Inc | 289,290 | $14.1M | 0.01% | −333−0.1% | Reduced |
| Raymond James Financial Inc | 283,593 | $13.8M | 0.00% | −10,925−3.7% | Reduced |
| Nuveen, LLC | 274,427 | $13.4M | 0.00% | −150,687−35.4% | Reduced |
| American Century Companies Inc | 245,038 | $11.9M | 0.01% | −16,220−6.2% | Reduced |
| UBS Asset Management Americas Inc | 244,401 | $11.9M | 0.00% | +9,668+4.1% | Added |
| Public Sector Pension Investment Board | 205,645 | $10.0M | 0.03% | −7,521−3.5% | Reduced |
| Goldman Sachs Group Inc | 197,125 | $9.59M | 0.00% | −86,851−30.6% | Reduced |
| Citadel Advisors LLC | 196,394 | $9.55M | 0.01% | +161,696+466.0% | Added |
| D. E. Shaw & Co., Inc. | 192,514 | $9.37M | 0.01% | +109,722+132.5% | Added |
| Duff & Phelps Investment Management Co | 183,197 | $8.91M | 0.08% | +98,082+115.2% | Added |
| UBS Group AG | 172,659 | $8.40M | 0.00% | −13,167−7.1% | Reduced |
| ProShare Advisors LLC | 162,729 | $7.92M | 0.01% | +10,679+7.0% | Added |
| Rhumbline Advisers | 158,336 | $7.70M | 0.01% | −16,061−9.2% | Reduced |
| Federated Hermes, Inc. | 155,114 | $7.55M | 0.01% | +25,923+20.1% | Added |
| Panagora Asset Management Inc | 152,982 | $7.44M | 0.02% | +152,982 | New |
| Renaissance Technologies LLC | 144,200 | $7.02M | 0.01% | +43,800+43.6% | Added |
| Gabelli Funds LLC | 141,088 | $6.86M | 0.04% | +97,888+226.6% | Added |
| JPMorgan Chase & Co | 135,513 | $6.76M | 0.00% | −15,574−10.3% | Reduced |
| Bank of America Corp | 133,752 | $6.51M | 0.00% | +11,853+9.7% | Added |
| Ameriprise Financial Inc | 130,513 | $6.35M | 0.00% | −5,638−4.1% | Reduced |
| Meiji Yasuda Asset Management Co Ltd. | 123,523 | $6.01M | 0.27% | −10,593−7.9% | Reduced |
| Mariner, LLC | 122,186 | $5.94M | 0.01% | −16,045−11.6% | Reduced |
| Swiss National Bank | 119,700 | $5.82M | 0.00% | +2,200+1.9% | Added |
| Trexquant Investment LP | 119,479 | $5.81M | 0.04% | +32,880+38.0% | Added |
| Martingale Asset Management L P | 114,662 | $5.58M | 0.13% | +10,682+10.3% | Added |
| Millennium Management LLC | 110,352 | $5.37M | 0.00% | +49,071+80.1% | Added |
| Great West Life Assurance Co | 105,326 | $5.12M | 0.01% | +10,769+11.4% | Added |
| Crawford Investment Counsel Inc | 101,589 | $4.94M | 0.08% | −1,400−1.4% | Reduced |
| Price T Rowe Associates Inc | 97,918 | $4.76M | 0.00% | +14,505+17.4% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 95,623 | $4.65M | 0.02% | −10,337−9.8% | Reduced |
| Deutsche Bank AG | 88,732 | $4.32M | 0.00% | −6,685−7.0% | Reduced |
| Sagefield Capital LP | 86,243 | $4.20M | 0.31% | +86,243 | New |
| Nia Impact Advisors, LLC | 85,841 | $4.18M | 1.73% | +49,925+139.0% | Added |
| Wells Fargo & Company | 83,459 | $4.06M | 0.00% | +30,652+58.0% | Added |
| Wedge Capital Management L L P | 78,417 | $3.81M | 0.06% | +33,852+76.0% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 73,443 | $3.57M | 0.01% | +13,171+21.9% | Added |
| Franklin Resources Inc | 68,217 | $3.32M | 0.00% | +644+1.0% | Added |
| California State Teachers Retirement System | 65,931 | $3.21M | 0.00% | +9,658+17.2% | Added |
| Maryland State Retirement & Pension System | 64,872 | $3.16M | 0.05% | +3,092+5.0% | Added |
| New York State Teachers Retirement System | 63,983 | $3.11M | 0.01% | +957+1.5% | Added |
| Capital Fund Management S.A. | 63,767 | $3.10M | 0.02% | +26,440+70.8% | Added |
| Ieq Capital, LLC | 63,323 | $3.08M | 0.01% | +63,323 | New |
| XTX Topco Ltd | 62,648 | $3.05M | 0.04% | +43,269+223.3% | Added |
| Alliancebernstein L.P. | 66,805 | $3.03M | 0.00% | +989+1.5% | Added |
| Prudential Financial Inc | 62,258 | $3.03M | 0.00% | +705+1.1% | Added |
| Magellan Asset Management Ltd | 61,416 | $2.99M | 0.07% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 59,973 | $2.92M | 0.01% | −6,516−9.8% | Reduced |
| Thrivent Financial for Lutherans | 59,888 | $2.91M | 0.00% | −472−0.8% | Reduced |
| Nordea Investment Management AB | 55,906 | $2.73M | 0.00% | +55,906 | New |
| Vanguard Asset Management, Ltd | 55,723 | $2.71M | 0.00% | 00.0% | Unchanged |
| TD Asset Management Inc | 55,194 | $2.69M | 0.00% | −2,844−4.9% | Reduced |
| Kornitzer Capital Management Inc | 55,000 | $2.68M | 0.06% | +12,500+29.4% | Added |
| Exchange Traded Concepts, LLC | 54,088 | $2.63M | 0.01% | +1,276+2.4% | Added |
| Midwest Trust Co | 52,002 | $2.53M | 0.03% | −831−1.6% | Reduced |
| Kennedy Capital Management, Inc. | 51,638 | $2.51M | 0.04% | +19,868+62.5% | Added |
| Storebrand Asset Management AS | 51,054 | $2.48M | 0.01% | +1,889+3.8% | Added |
| Clear Harbor Asset Management, LLC | 49,211 | $2.39M | 0.15% | −100−0.2% | Reduced |
| Mackenzie Financial Corp | 48,813 | $2.37M | 0.00% | +7,773+18.9% | Added |
| Northstar Asset Management Inc | 48,193 | $2.34M | 0.69% | −11,788−19.7% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 47,918 | $2.33M | 0.00% | +934+2.0% | Added |
| Macquarie Group Ltd | 46,609 | $2.27M | 0.01% | −6,836−12.8% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 46,062 | $2.24M | 0.00% | −1,105−2.3% | Reduced |
| Vanguard Investments Australia, Ltd. | 45,697 | $2.22M | 0.01% | +1,164+2.6% | Added |
| Colony Group, LLC | 45,014 | $2.19M | 0.00% | +16,834+59.7% | Added |
| Ilex Capital Partners (UK) LLP | 44,898 | $2.18M | 0.04% | +44,898 | New |
| SG Americas Securities, LLC | 43,334 | $2.11M | 0.00% | −1,001−2.3% | Reduced |
| Assenagon Asset Management S.A. | 42,371 | $2.06M | 0.00% | +42,371 | New |
| CoreCommodity Management, LLC | 42,138 | $2.05M | 0.41% | +13,577+47.5% | Added |
| SEI Investments Co | 41,171 | $2.00M | 0.00% | −11,712−22.1% | Reduced |
| Fifth Third Bancorp | 40,353 | $1.96M | 0.00% | +10,469+35.0% | Added |
| Vontobel Holding Ltd. | 40,289 | $1.96M | 0.01% | +144+0.4% | Added |
| Cerity Partners LLC | 38,046 | $1.85M | 0.00% | +18,930+99.0% | Added |
| Bridge City Capital, LLC | 37,553 | $1.83M | 0.42% | −739−1.9% | Reduced |