CWT California Water Service Group
California Water Service Group (CWT) Institutional Ownership
What the institutions did with CWT last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 10.8M | 19.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.4M | 7.9% |
| T. Rowe Price Investment Management, Inc. | 3.5M | 6.4% |
| Amundi | 3.5M | 6.3% |
| STATE STREET CORP | 3.3M | 5.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.7M | 4.9% |
| ATLAS Infrastructure Partners (UK) Ltd. | 2.0M | 3.6% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.6M | 2.8% |
| FIRST TRUST ADVISORS LP | 1.3M | 2.4% |
| FMR LLC | 1.3M | 2.3% |
| DIMENSIONAL FUND ADVISORS LP | 1.2M | 2.1% |
| NUANCE INVESTMENTS, LLC | 1.1M | 2.0% |
| Invesco Ltd. | 974.8K | 1.8% |
| MORGAN STANLEY | 948.1K | 1.7% |
| Legal & General Group Plc | 807.5K | 1.5% |
| ANTIPODES PARTNERS Ltd | 753.4K | 1.4% |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 747.2K | 1.4% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 725.3K | 1.3% |
| NORTHERN TRUST CORP | 708.8K | 1.3% |
| AQR CAPITAL MANAGEMENT LLC | 681.8K | 1.2% |
| KBC Group NV | 577.2K | 1.0% |
| Bank of New York Mellon Corp | 527.1K | 1.0% |
| Triodos Investment Management BV | 493.0K | 0.9% |
| Beck Bode, LLC | 426.7K | 0.8% |
| VANGUARD FIDUCIARY TRUST CO | 397.6K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| ATLAS Infrastructure Partners (UK) Ltd. | New | 0 | 2.0M | +2.0M |
| ANTIPODES PARTNERS Ltd | New | 0 | 753.4K | +753.4K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | New | 0 | 747.2K | +747.2K |
| CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC | Sold Out | 647.5K | 0 | -647.5K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 169.7K | 681.8K | +512.1K |
| NUANCE INVESTMENTS, LLC | Reduced | 1.6M | 1.1M | -507.7K |
| BlackRock, Inc. | Increased | 10.3M | 10.8M | +446.9K |
| MARSHALL WACE, LLP | Sold Out | 256.8K | 0 | -256.8K |
| Qube Research & Technologies Ltd | Sold Out | 186.9K | 0 | -186.9K |
| MORGAN STANLEY | Reduced | 1.1M | 948.1K | -170.6K |
| STATE STREET CORP | Increased | 3.1M | 3.3M | +164.2K |
| CITADEL ADVISORS LLC | Increased | 34.7K | 196.4K | +161.7K |
| PANAGORA ASSET MANAGEMENT INC | New | 0 | 153.0K | +153.0K |
| Nuveen, LLC | Reduced | 425.1K | 274.4K | -150.7K |
| JANE STREET GROUP, LLC | Sold Out | 123.3K | 0 | -123.3K |
| D. E. Shaw & Co., Inc. | Increased | 82.8K | 192.5K | +109.7K |
| FMR LLC | Reduced | 1.4M | 1.3M | -108.6K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 258.0K | 365.5K | +107.5K |
| T. Rowe Price Investment Management, Inc. | Increased | 3.4M | 3.5M | +98.8K |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO | Increased | 85.1K | 183.2K | +98.1K |
| GABELLI FUNDS LLC | Increased | 43.2K | 141.1K | +97.9K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 4.3M | 4.4M | +90.0K |
| GOLDMAN SACHS GROUP INC | Reduced | 284.0K | 197.1K | -86.9K |
| Sagefield Capital LP | New | 0 | 86.2K | +86.2K |
| Assenagon Asset Management S.A. | New | 0 | 84.7K | +84.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.5M | 1.6M | +80.0K |
| Triodos Investment Management BV | Increased | 414.0K | 493.0K | +79.0K |
| NORTHERN TRUST CORP | Increased | 637.3K | 708.8K | +71.5K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 77.0K | 8.6K | -68.4K |
| IEQ CAPITAL, LLC | New | 0 | 63.3K | +63.3K |
| Allianz Asset Management GmbH | Sold Out | 58.9K | 0 | -58.9K |
| NORDEA INVESTMENT MANAGEMENT AB | New | 0 | 55.9K | +55.9K |
| FIRST TRUST ADVISORS LP | Reduced | 1.4M | 1.3M | -54.1K |
| NIA IMPACT ADVISORS, LLC | Increased | 35.9K | 85.8K | +49.9K |
| MILLENNIUM MANAGEMENT LLC | Increased | 61.3K | 110.4K | +49.1K |
| Ilex Capital Partners (UK) LLP | New | 0 | 44.9K | +44.9K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 100.4K | 144.2K | +43.8K |
| XTX Topco Ltd | Increased | 19.4K | 62.6K | +43.3K |
| HRT FINANCIAL LP | Sold Out | 43.2K | 0 | -43.2K |
| Squarepoint Ops LLC | Reduced | 49.0K | 8.5K | -40.5K |
| BARCLAYS PLC | Reduced | 49.6K | 11.1K | -38.4K |
| WEDGE CAPITAL MANAGEMENT L L P/NC | Increased | 44.6K | 78.4K | +33.9K |
| Trexquant Investment LP | Increased | 86.6K | 119.5K | +32.9K |
| WELLS FARGO & COMPANY/MN | Increased | 52.8K | 83.5K | +30.7K |
| Legal & General Group Plc | Increased | 777.5K | 807.5K | +30.0K |
| Invesco Ltd. | Reduced | 1.0M | 974.8K | -27.5K |
| Russell Investments Group, Ltd. | Increased | 5.2K | 32.5K | +27.3K |
| CAPITAL FUND MANAGEMENT S.A. | Increased | 37.3K | 63.8K | +26.4K |
| FEDERATED HERMES, INC. | Increased | 129.2K | 155.1K | +25.9K |
| CANADA PENSION PLAN INVESTMENT BOARD | Reduced | 32.7K | 6.9K | -25.8K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 2.7M | 2.7M | +25.4K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Sold Out | 25.2K | 0 | -25.2K |
| Rodgers Brothers Inc. | Reduced | 50.0K | 25.1K | -25.0K |
| SEB Asset Management AB | New | 0 | 23.6K | +23.6K |
| Campbell & CO Investment Adviser LLC | Sold Out | 21.6K | 0 | -21.6K |
| CITIGROUP INC | Increased | 13.8K | 35.1K | +21.3K |
| Bank of New York Mellon Corp | Increased | 506.7K | 527.1K | +20.4K |
| Y-Intercept (Hong Kong) Ltd | Sold Out | 20.1K | 0 | -20.1K |
| KENNEDY CAPITAL MANAGEMENT LLC | Increased | 31.8K | 51.6K | +19.9K |
| Mitsubishi UFJ Trust & Banking Corp | New | 0 | 19.5K | +19.5K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.