California Water Service Group (CWT) ownership: Top institutional holder: BlackRock, Inc. ($467.39M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 10308555.00 | $467.39M | 2026-03-31 |
| VANGUARD GROUP INC | 7346457.00 | $318.32M | 2025-12-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4289673.00 | $194.49M | 2026-03-31 |
| Amundi | 3470997.00 | $157.42M | 2026-03-31 |
| T. Rowe Price Investment Management, Inc. | 3418294.00 | $154.99M | 2026-03-31 |
| STATE STREET CORP | 3102659.00 | $140.67M | 2026-03-31 |
| BlackRock Fund Advisors | 3731632.00 | $126.50M | 2016-12-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2665225.00 | $120.84M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-13 | |
| Sell | null | 2026-08-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 | |
| Sell | null | 2026-06-04 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.