CALIFORNIA WTR SVC GROUP (CWT)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
Institutions report 55,300,354 shares against 61,839,101 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $523.3M | 10,755,498 | 0.01% | 8q | +4.3%+$21.7M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $213.1M | 4,379,671 | 0.01% | 2q | +2.1%+$4.4M |
| T. Rowe Price Investment Management, Inc. | $171.1M | 3,517,105 | 0.11% | 16q | +2.9%+$4.8M |
| Amundi | $169.7M | 3,486,859 | 0.04% | 18q | HELD |
| STATE STREET CORP | $158.9M | 3,266,850 | 0.00% | 31q | +5.3%+$8.0M |
| VANGUARD CAPITAL MANAGEMENT LLC | $130.9M | 2,690,663 | 0.00% | 2q | +1.0%+$1.2M |
| ATLAS Infrastructure Partners (UK) Ltd. | $96.6M | 1,984,605 | 2.93% | new | NEW |
| GEODE CAPITAL MANAGEMENT, LLC | $75.7M | 1,555,391 | 0.00% | 31q | +5.4%+$3.9M |
| FIRST TRUST ADVISORS LP | $63.2M | 1,300,055 | 0.04% | 31q | -4.0%-$2.6M |
| FMR LLC | $62.3M | 1,281,406 | 0.00% | 31q | -7.8%-$5.3M |
| DIMENSIONAL FUND ADVISORS LP | $57.2M | 1,174,914 | 0.01% | 31q | +1.4%+$805.4K |
| NUANCE INVESTMENTS, LLC | $53.3M | 1,096,077 | 9.07% | 27q | -31.7%-$24.7M |
| Invesco Ltd. | $47.4M | 974,775 | 0.00% | 31q | -2.7%-$1.3M |
| MORGAN STANLEY | $46.1M | 948,112 | 0.00% | 35q | -15.2%-$8.3M |
| Legal & General Group Plc | $39.3M | 807,510 | 0.01% | 31q | +3.9%+$1.5M |
| ANTIPODES PARTNERS Ltd | $36.7M | 753,386 | 0.67% | new | NEW |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $36.4M | 747,216 | 0.05% | new | NEW |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $35.3M | 725,290 | 0.00% | 31q | HELD |
| NORTHERN TRUST CORP | $34.5M | 708,763 | 0.00% | 31q | +11.2%+$3.5M |
| AQR CAPITAL MANAGEMENT LLC | $33.2M | 681,791 | 0.01% | 9q | +301.7%+$24.9M |
| KBC Group NV | $28.1M | 577,247 | 0.06% | 31q | HELD |
| Bank of New York Mellon Corp | $25.6M | 527,076 | 0.00% | 31q | +4.0%+$991.2K |
| Triodos Investment Management BV | $24.0M | 493,000 | 1.46% | 10q | +19.1%+$3.8M |
| Beck Bode, LLC | $20.8M | 426,692 | 3.14% | 6q | +3.6%+$728.7K |
| VANGUARD FIDUCIARY TRUST CO | $19.3M | 397,640 | 0.00% | 2q | +2.9%+$546.2K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $17.8M | 365,464 | 0.01% | 6q | +41.7%+$5.2M |
| VICTORY CAPITAL MANAGEMENT INC | $16.1M | 331,132 | 0.01% | 28q | +3.1%+$477.6K |
| PRINCIPAL FINANCIAL GROUP INC | $14.1M | 289,290 | 0.01% | 31q | HELD |
| RAYMOND JAMES FINANCIAL INC | $13.8M | 283,593 | 0.00% | 7q | -3.7%-$531.5K |
| Nuveen, LLC | $13.4M | 274,427 | 0.00% | 6q | -35.4%-$7.3M |
| AMERICAN CENTURY COMPANIES INC | $11.9M | 245,038 | 0.01% | 10q | -6.2%-$789.1K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $11.9M | 244,401 | 0.00% | 31q | +4.1%+$470.3K |
| Public Sector Pension Investment Board | $10.0M | 205,645 | 0.03% | 31q | -3.5%-$365.9K |
| GOLDMAN SACHS GROUP INC | $9.6M | 197,125 | 0.00% | 31q | -30.6%-$4.2M |
| CITADEL ADVISORS LLC | $9.6M | 196,394 | 0.00% | 22q | +466.0%+$7.9M |
| D. E. Shaw & Co., Inc. | $9.4M | 192,514 | 0.00% | 9q | +132.5%+$5.3M |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO | $8.9M | 183,197 | 0.08% | 2q | +115.2%+$4.8M |
| UBS Group AG | $8.4M | 172,659 | 0.00% | 31q | -7.1%-$640.6K |
| ProShare Advisors LLC | $7.9M | 162,729 | 0.01% | 31q | +7.0%+$519.5K |
| RHUMBLINE ADVISERS | $7.7M | 158,336 | 0.01% | 31q | -9.2%-$781.4K |
| FEDERATED HERMES, INC. | $7.5M | 155,114 | 0.01% | 8q | +20.1%+$1.3M |
| PANAGORA ASSET MANAGEMENT INC | $7.4M | 152,982 | 0.02% | new | NEW |
| RENAISSANCE TECHNOLOGIES LLC | $7.0M | 144,200 | 0.01% | 7q | +43.6%+$2.1M |
| GABELLI FUNDS LLC | $6.9M | 141,088 | 0.04% | 31q | +226.6%+$4.8M |
| JPMORGAN CHASE & CO | $6.8M | 135,513 | 0.00% | 31q | -10.3%-$777.3K |
| BANK OF AMERICA CORP /DE/ | $6.5M | 133,752 | 0.00% | 31q | +9.7%+$576.6K |
| AMERIPRISE FINANCIAL INC | $6.3M | 130,513 | 0.00% | 31q | -4.1%-$274.3K |
| Meiji Yasuda Asset Management Co Ltd. | $6.0M | 123,523 | 0.27% | 14q | -7.9%-$515.3K |
| Mariner, LLC | $5.9M | 122,186 | 0.01% | 16q | -11.6%-$780.6K |
| Swiss National Bank | $5.8M | 119,700 | 0.00% | 31q | +1.9%+$107.0K |
| Trexquant Investment LP | $5.8M | 119,479 | 0.03% | 8q | +38.0%+$1.6M |
| MARTINGALE ASSET MANAGEMENT L P | $5.6M | 114,662 | 0.13% | 24q | +10.3%+$519.7K |
| MILLENNIUM MANAGEMENT LLC | $5.4M | 110,352 | 0.00% | 5q | +80.1%+$2.4M |
| CANADA LIFE ASSURANCE Co | $5.1M | 105,326 | 0.01% | 31q | +11.4%+$523.5K |
| CRAWFORD INVESTMENT COUNSEL INC | $4.9M | 101,589 | 0.08% | 5q | -1.4%-$68.1K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $4.8M | 97,918 | 0.00% | 31q | +17.4%+$705.7K |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | $4.7M | 95,623 | 0.02% | 31q | -9.8%-$502.9K |
| DEUTSCHE BANK AG\ | $4.3M | 88,732 | 0.00% | 34q | -7.0%-$325.2K |
| Sagefield Capital LP | $4.2M | 86,243 | 0.31% | new | NEW |
| NIA IMPACT ADVISORS, LLC | $4.2M | 85,841 | 1.73% | 21q | +139.0%+$2.4M |
| Assenagon Asset Management S.A. | $4.1M | 84,742 | 0.00% | new | NEW |
| WELLS FARGO & COMPANY/MN | $4.1M | 83,459 | 0.00% | 31q | +58.0%+$1.5M |
| WEDGE CAPITAL MANAGEMENT L L P/NC | $3.8M | 78,417 | 0.06% | 2q | +76.0%+$1.6M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $3.6M | 73,443 | 0.01% | 6q | +21.9%+$640.8K |
| FRANKLIN RESOURCES INC | $3.3M | 68,217 | 0.00% | 15q | +1.0%+$31.3K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $3.2M | 65,931 | 0.00% | 31q | +17.2%+$469.9K |
| Maryland State Retirement & Pension System | $3.2M | 64,872 | 0.05% | 20q | +5.0%+$150.4K |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | $3.1M | 63,983 | 0.01% | 31q | +1.5%+$46.6K |
| CAPITAL FUND MANAGEMENT S.A. | $3.1M | 63,767 | 0.01% | 5q | +70.8%+$1.3M |
| IEQ CAPITAL, LLC | $3.1M | 63,323 | 0.01% | new | NEW |
| XTX Topco Ltd | $3.0M | 62,648 | 0.04% | 3q | +223.3%+$2.1M |
| ALLIANCEBERNSTEIN L.P. | $3.0M | 66,805 | 0.00% | 31q | +1.5%+$44.8K |
| PRUDENTIAL FINANCIAL INC | $3.0M | 62,258 | 0.00% | 31q | +1.1%+$34.3K |
| Magellan Asset Management Ltd | $3.0M | 61,416 | 0.07% | 31q | HELD |
| JACOBS LEVY EQUITY MANAGEMENT, INC | $2.9M | 59,973 | 0.01% | 6q | -9.8%-$317.0K |
| Thrivent Financial for Lutherans | $2.9M | 59,888 | 0.00% | 31q | -0.8%-$23.0K |
| NORDEA INVESTMENT MANAGEMENT AB | $2.7M | 55,906 | 0.00% | new | NEW |
| VANGUARD ASSET MANAGEMENT, Ltd | $2.7M | 55,723 | 0.00% | 2q | HELD |
| TD Asset Management Inc | $2.7M | 55,194 | 0.00% | 31q | -4.9%-$138.4K |
| KORNITZER CAPITAL MANAGEMENT INC /KS | $2.7M | 55,000 | 0.06% | 2q | +29.4%+$608.1K |
| EXCHANGE TRADED CONCEPTS, LLC | $2.6M | 54,088 | 0.01% | 25q | +2.4%+$62.1K |
| Midwest Trust Co | $2.5M | 52,002 | 0.03% | 5q | -1.6%-$40.4K |
| KENNEDY CAPITAL MANAGEMENT LLC | $2.5M | 51,638 | 0.04% | 6q | +62.5%+$966.6K |
| STOREBRAND ASSET MANAGEMENT AS | $2.5M | 51,054 | 0.01% | 26q | +3.8%+$91.9K |
| Clear Harbor Asset Management, LLC | $2.4M | 49,211 | 0.15% | 31q | HELD |
| MACKENZIE FINANCIAL CORP | $2.4M | 48,813 | 0.00% | 8q | +18.9%+$378.2K |
| NORTHSTAR ASSET MANAGEMENT INC | $2.3M | 48,193 | 0.69% | 22q | -19.7%-$573.5K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | $2.3M | 47,918 | 0.00% | 31q | +2.0%+$45.4K |
| MACQUARIE GROUP LTD | $2.3M | 46,609 | 0.01% | 32q | -12.8%-$332.6K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $2.2M | 46,062 | 0.00% | 9q | -2.3%-$53.8K |
| Vanguard Investments Australia, Ltd. | $2.2M | 45,697 | 0.01% | 2q | +2.6%+$56.6K |
| Focus Partners Wealth | $2.2M | 45,014 | 0.00% | 8q | +59.7%+$819.0K |
| Ilex Capital Partners (UK) LLP | $2.2M | 44,898 | 0.04% | new | NEW |
| SG Americas Securities, LLC | $2.1M | 43,334 | 0.00% | 9q | -2.3%-$48.7K |
| CoreCommodity Management, LLC | $2.1M | 42,138 | 0.41% | 19q | +47.5%+$660.5K |
| SEI INVESTMENTS CO | $2.0M | 41,171 | 0.00% | 19q | -22.1%-$569.8K |
| FIFTH THIRD BANCORP | $2.0M | 40,353 | 0.00% | 29q | +35.0%+$509.3K |
| Vontobel Holding Ltd. | $2.0M | 40,289 | 0.01% | 14q | HELD |
| Cerity Partners LLC | $1.9M | 38,046 | 0.00% | 19q | +99.0%+$920.9K |
| Bridge City Capital, LLC | $1.8M | 37,553 | 0.42% | 25q | -1.9%-$36.0K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-26 | 13G/A | AMUNDIwith 1 co-filers | 5.3% |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-13 | Krummel Thomas M | Director | Sold | 3,700 | $186.4K |
| 2026-05-21 | Krummel Thomas M | Director | Sold | 3,700 | $160.2K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 84 | $71.0M | 1,536,000 | 12 | 26 | 16 | 0.0% |
| Q2 2026 | 348 | $2.7B | 55,300,354 | 48 | 127 | 90 | 0.0% |
| Q1 2026 | 338 | $2.3B | 51,267,512 | 40 | 129 | 88 | 0.0% |
| Q4 2025 | 331 | $2.2B | 50,849,816 | 27 | 86 | 125 | 0.1% |
| Q3 2025 | 338 | $2.3B | 50,359,374 | 36 | 113 | 106 | 0.2% |
| Q2 2025 | 336 | $2.3B | 50,426,554 | 37 | 115 | 110 | 0.0% |
| Q1 2025 | 329 | $2.5B | 50,534,702 | 42 | 115 | 100 | 0.0% |
| Q4 2024 | 323 | $2.2B | 49,169,363 | 26 | 120 | 96 | 0.0% |
| Q3 2024 | 324 | $2.6B | 48,633,006 | 52 | 94 | 104 | 0.0% |
| Q2 2024 | 299 | $2.4B | 48,456,610 | 53 | 77 | 102 | 0.0% |
| Q1 2024 | 275 | $2.3B | 50,540,894 | 30 | 88 | 88 | 0.0% |
| Q4 2023 | 283 | $2.5B | 48,642,166 | 31 | 76 | 97 | 0.0% |
| Q3 2023 | 268 | $2.3B | 47,824,837 | 21 | 95 | 86 | 0.0% |
| Q2 2023 | 282 | $2.4B | 47,139,972 | 27 | 101 | 80 | 0.0% |
| Q1 2023 | 295 | $2.6B | 44,936,639 | 30 | 88 | 91 | 0.0% |
| Q4 2022 | 288 | $2.7B | 45,037,128 | 36 | 87 | 85 | 0.0% |
| Q3 2022 | 265 | $6.0B | 113,918,456 | 28 | 93 | 65 | 0.0% |
| Q2 2022 | 266 | $6.3B | 113,663,961 | 22 | 74 | 80 | 0.0% |
| Q1 2022 | 299 | $6.5B | 109,741,426 | 38 | 97 | 82 | 0.0% |
| Q4 2021 | 300 | $8.9B | 123,725,359 | 49 | 84 | 76 | 0.4% |
| Q3 2021 | 262 | $7.1B | 120,401,949 | 35 | 85 | 73 | 0.0% |
| Q2 2021 | 245 | $6.5B | 117,874,607 | 17 | 83 | 71 | 0.0% |
| Q1 2021 | 249 | $6.4B | 113,212,901 | 27 | 78 | 69 | 0.0% |
| Q4 2020 | 246 | $3.1B | 53,722,039 | 25 | 78 | 65 | 0.0% |
| Q3 2020 | 239 | $2.3B | 52,263,453 | 18 | 68 | 75 | 0.0% |
| Q2 2020 | 251 | $2.5B | 52,606,134 | 29 | 72 | 76 | 0.0% |
| Q1 2020 | 246 | $3.7B | 73,650,404 | 24 | 71 | 81 | 0.1% |
| Q4 2019 | 259 | $3.0B | 57,569,213 | 19 | 79 | 74 | 0.0% |
| Q3 2019 | 261 | $3.1B | 57,840,132 | 28 | 82 | 64 | 0.0% |
| Q2 2019 | 251 | $2.8B | 56,183,957 | 31 | 78 | 62 | 0.1% |
| Q1 2019 | 253 | $2.8B | 51,303,069 | 38 | 80 | 59 | 0.1% |
| Q4 2018 | 234 | $2.5B | 51,400,163 | 4 | 4 | 3 | 0.2% |
