California Water Service GrpCWT
13F holders, Q2 2026 (June 30)346holders +7
45new positions
43sold out
6famous investors
$48.65avg. 13F price*
At the end of Q2 2026, 346 institutions reported holding California Water Service Grp (CWT) in their 13F filings, up 7 from Q1 2026. 45 opened new positions and 43 sold out. The largest holders were BlackRock, Inc. ($523.3M), Vanguard Portfolio Management LLC ($213.1M) and T. Rowe Price Investment Management, Inc. ($171.1M). 6 famous investors held it, including Cliff Asness (0.0% of AQR Capital Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Mario Gabelli (0.0% of GAMCO Investors's portfolio).
- Company
- California Water Service Grp
- CUSIP
- 130788102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 45 | $197.8M |
| Exits | 43 | $67.8M |
All 13F filers, Q1 2026 → Q2 2026: 7,061,571 shares bought and 3,113,006 shares sold, net +3,948,565 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 346 holders
| BlackRock, Inc. | 0.01% | Add +4.3% | 10,755,498 | $523.3M |
| Vanguard Portfolio Management LLC | 0.01% | Add +2.1% | 4,379,671 | $213.1M |
| T. Rowe Price Investment Management, Inc. | 0.11% | Add +2.9% | 3,517,105 | $171.1M |
| Amundi | 0.04% | Add +0.5% | 3,486,859 | $169.7M |
| State Street Corp. | 0.00% | Add +5.3% | 3,266,850 | $158.9M |
| Vanguard Capital Management LLC | 0.00% | Add +0.9% | 2,690,663 | $130.9M |
| ATLAS Infrastructure Partners (UK) Ltd. | 2.93% | New | 1,984,605 | $96.6M |
| Geode Capital Management, LLC | 0.00% | Add +5.4% | 1,555,391 | $75.7M |
| First Trust Advisors LP | 0.04% | Reduce -4.0% | 1,300,055 | $63.2M |
| FMR LLC | 0.00% | Reduce -7.8% | 1,281,406 | $62.3M |
| Dimensional Fund Advisors LP | 0.01% | Add +1.4% | 1,174,914 | $57.2M |
| Nuance Investments, LLC | 9.07% | Reduce -31.7% | 1,096,077 | $53.3M |
| Invesco Ltd. | 0.00% | Reduce -2.7% | 974,775 | $47.4M |
| Morgan Stanley | 0.00% | Reduce -15.3% | 948,112 | $46.1M |
| Legal & General Group Plc | 0.01% | Add +3.9% | 807,510 | $39.3M |
| ANTIPODES PARTNERS Ltd | 0.67% | New | 753,386 | $36.7M |
| Nomura Asset Management International Inc. | 0.05% | New | 747,216 | $36.4M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.4% | 725,290 | $35.3M |
| Northern Trust Corp. | 0.00% | Add +11.2% | 708,763 | $34.5M |
| AQR Capital Management | 0.01% | Add +301.7% | 681,791 | $33.2M |
| KBC Group NV | 0.06% | No change | 577,247 | $28.1M |
| Bank of New York Mellon Corp | 0.00% | Add +4.0% | 527,076 | $25.6M |
| Triodos Investment Management BV | 1.46% | Add +19.1% | 493,000 | $24.0M |
| Beck Bode, LLC | 3.14% | Add +3.6% | 426,692 | $20.8M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +2.9% | 397,640 | $19.3M |
| Arrowstreet Capital, Limited Partnership | 0.01% | Add +41.7% | 365,464 | $17.8M |
| Victory Capital Management Inc. | 0.01% | Add +3.1% | 331,132 | $16.1M |
| Principal Financial Group Inc. | 0.01% | Reduce -0.1% | 289,290 | $14.1M |
| Raymond James Financial Inc. | 0.00% | Reduce -3.7% | 283,593 | $13.8M |
| Nuveen, LLC | 0.00% | Reduce -35.5% | 274,427 | $13.4M |
| American Century Companies Inc. | 0.01% | Reduce -6.2% | 245,038 | $11.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +4.1% | 244,401 | $11.9M |
| Public Sector Pension Investment Board | 0.03% | Reduce -3.5% | 205,645 | $10.0M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -30.6% | 197,125 | $9.6M |
| Citadel Advisors | 0.01% | Add +466.0% | 196,394 | $9.6M |
| D. E. Shaw & Co. | 0.01% | Add +132.5% | 192,514 | $9.4M |
| Duff & Phelps Investment Management Co. | 0.08% | Add +115.2% | 183,197 | $8.9M |
| UBS Group AG | 0.00% | Reduce -7.1% | 172,659 | $8.4M |
| ProShare Advisors LLC | 0.01% | Add +7.0% | 162,729 | $7.9M |
| Rhumbline Advisers | 0.01% | Reduce -9.2% | 158,336 | $7.7M |
| Federated Hermes, Inc. | 0.01% | Add +20.1% | 155,114 | $7.5M |
| Panagora Asset Management Inc. | 0.02% | New | 152,982 | $7.4M |
| Renaissance Technologies | 0.01% | Add +43.6% | 144,200 | $7.0M |
| Gabelli Funds LLC | 0.04% | Add +226.6% | 141,088 | $6.9M |
| JPMorgan Chase & Co. | 0.00% | Reduce -10.3% | 135,513 | $6.8M |
| Bank of America Corp. | 0.00% | Add +9.7% | 133,752 | $6.5M |
| Ameriprise Financial Inc. | 0.00% | Reduce -4.1% | 130,513 | $6.3M |
| Meiji Yasuda Asset Management Co Ltd. | 0.27% | Reduce -7.9% | 123,523 | $6.0M |
| Mariner, LLC | 0.01% | Reduce -11.6% | 122,186 | $5.9M |
| Swiss National Bank | 0.00% | Add +1.9% | 119,700 | $5.8M |
| Trexquant Investment LP | 0.04% | Add +38.0% | 119,479 | $5.8M |
| Martingale Asset Management L P | 0.13% | Add +10.3% | 114,662 | $5.6M |
| Millennium Management | 0.00% | Add +80.1% | 110,352 | $5.4M |
| CANADA LIFE ASSURANCE Co | 0.01% | Add +11.4% | 105,326 | $5.1M |
| Crawford Investment Counsel Inc. | 0.08% | Reduce -1.4% | 101,589 | $4.9M |
| T. Rowe Price Associates Inc. | 0.00% | Add +17.4% | 97,918 | $4.8M |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.02% | Reduce -9.8% | 95,623 | $4.7M |
| Deutsche Bank AG | 0.00% | Reduce -7.0% | 88,732 | $4.3M |
| Sagefield Capital LP | 0.31% | New | 86,243 | $4.2M |
| Nia Impact Advisors, LLC | 1.73% | Add +139.0% | 85,841 | $4.2M |
| Wells Fargo & Company | 0.00% | Add +58.0% | 83,459 | $4.1M |
| Wedge Capital Management L L P | 0.06% | Add +76.0% | 78,417 | $3.8M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.01% | Add +21.9% | 73,443 | $3.6M |
| Franklin Resources Inc. | 0.00% | Add +0.9% | 68,217 | $3.3M |
| California State Teachers Retirement System | 0.00% | Add +17.2% | 65,931 | $3.2M |
| Maryland State Retirement & Pension System | 0.05% | Add +5.0% | 64,872 | $3.2M |
| New York State Teachers Retirement System | 0.01% | Add +1.5% | 63,983 | $3.1M |
| Capital Fund Management S.A. | 0.02% | Add +70.8% | 63,767 | $3.1M |
| Ieq Capital, LLC | 0.01% | New | 63,323 | $3.1M |
| XTX Topco Ltd | 0.04% | Add +223.3% | 62,648 | $3.0M |
| Alliancebernstein L.P. | 0.00% | Add +1.5% | 66,805 | $3.0M |
| Prudential Financial Inc. | 0.00% | Add +1.1% | 62,258 | $3.0M |
| Magellan Asset Management Ltd | 0.07% | No change | 61,416 | $3.0M |
| Jacobs Levy Equity Management, Inc. | 0.01% | Reduce -9.8% | 59,973 | $2.9M |
| Thrivent Financial for Lutherans | 0.01% | Reduce -0.8% | 59,888 | $2.9M |
| Nordea Investment Management AB | 0.00% | New | 55,906 | $2.7M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | No change | 55,723 | $2.7M |
| TD Asset Management Inc | 0.00% | Reduce -4.9% | 55,194 | $2.7M |
| Kornitzer Capital Management Inc. | 0.06% | Add +29.4% | 55,000 | $2.7M |
| Exchange Traded Concepts, LLC | 0.01% | Add +2.4% | 54,088 | $2.6M |
| Midwest Trust Co | 0.03% | Reduce -1.6% | 52,002 | $2.5M |
| Kennedy Capital Management LLC | 0.04% | Add +62.5% | 51,638 | $2.5M |
| Storebrand Asset Management As | 0.01% | Add +3.8% | 51,054 | $2.5M |
| Clear Harbor Asset Management, LLC | 0.15% | Reduce -0.2% | 49,211 | $2.4M |
| Mackenzie Financial Corp. | 0.00% | Add +18.9% | 48,813 | $2.4M |
| Northstar Asset Management Inc. | 0.69% | Reduce -19.6% | 48,193 | $2.3M |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +2.0% | 47,918 | $2.3M |
| Macquarie Group Ltd. | 0.01% | Reduce -12.8% | 46,609 | $2.3M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -2.3% | 46,062 | $2.2M |
| Vanguard Investments Australia, Ltd. | 0.01% | Add +2.6% | 45,697 | $2.2M |
| Focus Partners Wealth | 0.00% | Add +59.7% | 45,014 | $2.2M |
| Ilex Capital Partners (UK) LLP | 0.04% | New | 44,898 | $2.2M |
| SG Americas Securities, LLC | 0.00% | Reduce -2.3% | 43,334 | $2.1M |
| Assenagon Asset Management S.A. | 0.00% | New | 42,371 | $2.1M |
| CoreCommodity Management, LLC | 0.41% | Add +47.5% | 42,138 | $2.1M |
| Sei Investments Co. | 0.00% | Reduce -22.1% | 41,171 | $2.0M |
| Fifth Third Bancorp | 0.00% | Add +35.0% | 40,353 | $2.0M |
| Vontobel Holding Ltd. | 0.01% | Add +0.4% | 40,289 | $2.0M |
| Cerity Partners LLC | 0.00% | Add +99.0% | 38,046 | $1.9M |
| Bridge City Capital, LLC | 0.42% | Reduce -1.9% | 37,553 | $1.8M |
"% of holder's portfolio" is CWT's weight in each manager's 13F, not the share of California Water Service Grp the manager owns.