California Water Service Group
CWT- Exchange
- NYSE
- Industry
- Water Supply
- SEC CIK
- 0001035201
In the last 90 days, California Water Service Group insiders filed 0 open-market purchases and 5 sales; 347 institutions reported holding it in 13F filings for Q2 2026, worth $2.69B in total; no superinvestor holds it.
Key figures
- Market capClose on Nov 10, 2026
- $3.15B
- Insider buysOpen market, last 90 days
- 0
- Insider sellsLast 90 days, $581.0K in total
- 5
- 13F holdersQ2 2026, +12 vs. previous quarter
- 347
- 13F valueReported value at the end of Q2 2026
- $2.69B
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $963.7M
- +6.4% year over year
- Net income, FY2025
- $128.2M
- −32.8% year over year
- Free cash flow, FY2025
- –
- No comparable prior period
- Revenue, Q3 FY2026
- $331.2M
- +5.4% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Short interest
See short dataFrom FINRA, settlement date Oct 30, 2026.
- Short interest
- 2.26M
- Shares sold short
- Change
- −61.0K
- −2.6% vs. previous
- Days to cover
- 5.68
- At average daily volume
Superinvestors holding CWT, Q2 2026
Go to the superinvestors tabNo superinvestor reported holding CWT at the end of Q2 2026.
Latest insider trades
See all insider tradesOpen-market purchases and sales by California Water Service Group insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Nov 9, 2026 (view filing)4:06 PM ET | Nov 6 | 3 days | Krummel Thomas MDirector | SSale | −3.70K | $50.82 | −$188.0K | −18.4%16.4K after | |
| Nov 5, 2026 (view filing)4:49 PM ET | Nov 4 | 1 day | Shimansky Gregory DaleVP, Rates & Reg Affairs | SSale | −978.43 | $50.00 | −$48.9K | −68.7%446 after | |
| Nov 5, 2026 (view filing)4:32 PM ET | Nov 4 | 1 day | Pottenger Carol MDirector | SSale | −2.66K | $49.92 | −$132.7K | −13.8%16.5K after | |
| Sep 1, 2026 (view filing)5:07 PM ET | Sep 1 | Same day | Snow Lester ADirector | SSale | −500 | $50.21 | −$25.1K | −2.7%17.8K after | |
| Aug 14, 2026 (view filing)5:13 PM ET | Aug 13 | 1 day | Krummel Thomas MDirector | SSale | −3.70K | $50.37 | −$186.4K | −15.5%20.1K after | |
| May 27, 2026 (view filing) | May 27 | Same day | Snow Lester ADirector | SSale | −1.10K | $44.00 | −$48.4K | −5.7%18.3K after | |
| May 21, 2026 (view filing) | May 21 | Same day | Krummel Thomas MDirector | SSale | −3.70K | $43.30 | −$160.2K | −13.5%23.8K after | |
| Mar 24, 2026 (view filing) | Mar 20 | 4 days | Luu Michael BSr. VP Corp Svcs & Chief Risk | SSale | −739.85 | $44.53 | −$32.9K | −3.0%23.7K after | |
| Mar 24, 2026 (view filing) | Mar 20 | 4 days | Mares Michael S JRVice President, Operations | SSale | −3.89K | $44.00 | −$171.2K | −31.3%8.52K after | |
| Dec 23, 2025 (view filing) | Dec 23 | Same day | Mortensen Michelle RVP, Corp Sec &Chief of Staff | SSale | −924 | $43.34 | −$40.0K | −7.4%11.5K after |
Top 10 13F holders, Q2 2026
See all 347 holdersThe largest institutional positions in California Water Service Group at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 10,755,498 | $523.3M | 0.01% | +446,943+4.3% | Added |
| Vanguard Portfolio Management LLC | 4,379,671 | $213.1M | 0.01% | +89,998+2.1% | Added |
| T. Rowe Price Investment Management, Inc. | 3,517,105 | $171.1M | 0.11% | +98,811+2.9% | Added |
| Amundi | 3,486,859 | $169.7M | 0.04% | +15,862+0.5% | Added |
| State Street Corp | 3,266,850 | $158.9M | 0.00% | +164,191+5.3% | Added |
| Vanguard Capital Management LLC | 2,690,663 | $130.9M | 0.00% | +25,438+1.0% | Added |
| ATLAS Infrastructure Partners (UK) Ltd. | 1,984,605 | $96.6M | 2.93% | +1,984,605 | New |
| Geode Capital Management, LLC | 1,555,391 | $75.7M | 0.00% | +79,986+5.4% | Added |
| First Trust Advisors LP | 1,300,055 | $63.2M | 0.04% | −54,110−4.0% | Reduced |
| FMR LLC | 1,281,406 | $62.3M | 0.00% | −108,608−7.8% | Reduced |
Holders of 5% or more of CWT
See all 5 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of California Water Service Group.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 17.10%10.2M shares | – | Jul 17, 20251 filing | Jul 17, 2025 | SEC |
| Vanguard Portfolio Management LLC | 13G | 7.23%4.31M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| Amundi | 13G/A | 5.32%3.29M shares | −0.51 ppfrom 5.83% | Apr 10, 20263 filings | Oct 26, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.28%3.15M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| T. Rowe Price Investment Management, Inc. | 13G/A | 5.00%2.96M shares | – | Feb 14, 20243 filings | Feb 14, 2025 | SEC |