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 2 sales; 346 institutions reported holding it in 13F filings for Q2 2026, worth $2.69B in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsLast 90 days, $211.5K in total
- 2
- 13F holdersQ2 2026, +11 vs. previous quarter
- 346
- 13F valueReported value at the end of Q2 2026
- $2.69B
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding CWT, Q2 2026
No superinvestor reported holding CWT at the end of Q2 2026.
Latest insider trades
Open-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 |
|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| Dec 11, 2025 (view filing) | Dec 10 | 1 day | Lynch James PatrickSVP CFO and Treasurer | PPurchase | +550 | $42.80 | +$23.5K | +13.5%4.62K after | |
| Jun 13, 2025 (view filing) | Jun 12 | 1 day | Snow Lester ADirector | SSale | −1.20K | $46.51 | −$55.8K | −4.4%26.3K after | |
| Nov 25, 2024 (view filing) | Nov 22 | 3 days | Luu Michael BSr. VP Corp Svcs & Chief Risk | SSale | −985 | $51.50 | −$50.7K | −4.6%20.4K after |
Top 10 13F holders, Q2 2026
The 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 |