California Water Service Group
CWT · NYSE
$46.47+$0.89 (+1.95%)TodayMarket closed ·
Prev close $45.58
Who owns CWT
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 55.8% of CWT’s shares.
- BlackRock Institutional Trust Company, N.A.14.3%
- Vanguard Portfolio Management, LLC7.3%
- T. Rowe Price Investment Management, Inc.5.9%
- Amundi Asset Management, SAS5.8%
- Next 6 largest institutions22.5%
- All other shareholders44.2%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 8.58M | 14.34% |
| Vanguard Portfolio Management, LLC | 4.38M | 7.32% |
| T. Rowe Price Investment Management, Inc. | 3.52M | 5.88% |
| Amundi Asset Management, SAS | 3.49M | 5.83% |
| State Street Investment Management (US) | 3.27M | 5.46% |
| Vanguard Capital Management, LLC | 2.69M | 4.50% |
| KBI Global Investors Ltd. | 2.58M | 4.31% |
| ATLAS Infrastructure Partners (UK) Ltd | 1.98M | 3.32% |
| Geode Capital Management, L.L.C. | 1.56M | 2.60% |
| BlackRock Asset Management Ireland Limited | 1.38M | 2.31% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.65M | 6.10% |
| Vanguard Total Stock Market Index Fund | 1.91M | 3.19% |
| iShares Russell 2000 ETF | 1.57M | 2.62% |
| Vanguard Small-Cap Index Fund | 1.38M | 2.30% |
| Fidelity Small Cap Value Fund | 1.15M | 1.92% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $420.07K (4 trades) of CWT on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| James Sophie Marwieh | Tax withholding | 50 | $2.50K |
| Jenkins Kenneth G | Tax withholding | 38 | $1.90K |
| Bunting Shawn C | Tax withholding | 69 | $3.45K |
| Peters Todd Kenneth | Tax withholding | 40 | $2.00K |
| Scanlon Thomas A | Tax withholding | 30 | $1.50K |
| Mares Michael S JR | Tax withholding | 67 | $3.35K |
| Ouyang Elissa Y | Tax withholding | 66 | $3.30K |
| Dean Shannon C | Tax withholding | 72 | $3.60K |
| Mortensen Michelle R | Tax withholding | 73 | $3.65K |
| Luu Michael B | Tax withholding | 68 | $3.40K |
Short interest
Settled Sep 30, 2026
- Shares short
- 2.48M
- Days to cover
- 5.65
- % of shares outstanding
- 4.15%
- Average daily volume
- 439.85K
- Change since last report
- +2.8%
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