CWTNYSEWater SupplyFiscal year ends December 31
CALIFORNIA WATER SERVICE GROUP
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Jul 30, 2026
$45.58−0.77 (-1.66%)
Close on Oct 19, 2026
- Market cap
- $2.75B
- P/E (TTM)
- 20.5
- Dividend yield
- 2.72%
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
89.5%
55M of 62M shares
Institutional holders
344
52 new, 42 sold out
Net institutional buying
4M
In Q2 2026
Insider trades, 12 months
1 buys · 7 sales
Net sold $640.78K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Vanguard Portfolio Management | 4,312,668 | 7.23% | 13G (passive) | Mar 31, 2026 |
| Amundi Asset Management | 3,489,311 | 5.83% | 13G (passive) amendment | Jun 30, 2026 |
| Amundi | 3,470,997 | 5.82% | 13G (passive) | Mar 31, 2026 |
| Vanguard Capital Management | 3,154,734 | 5.28% | 13G (passive) | Mar 31, 2026 |
| T. Rowe Price Investment Management, Inc. | 2,962,783 | 5.00% | 13G (passive) amendment | Dec 31, 2024 |
| BlackRock, Inc. | 10,201,874 | 17.10% | 13G (passive) amendment | Jun 30, 2025 |
| State Street Corporation | – | 5.95% | 13G (passive) amendment | Dec 31, 2023 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of CWT | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 10,755,498 | 17.39% | $523.25M | +446,943 | 0.01% |
| Vanguard Portfolio Management LLC | 4,379,671 | 7.08% | $213.07M | +89,998 | 0.01% |
| T. Rowe Price Investment Management, Inc. | 3,517,105 | 5.69% | $171.11K | +98,811 | 0.11% |
| Amundi | 3,486,859 | 5.64% | $169.74M | +15,862 | 0.04% |
| State Street Corp | 3,266,850 | 5.28% | $158.93M | +164,191 | 0.00% |
| Vanguard Capital Management LLC | 2,690,663 | 4.35% | $130.90M | +25,438 | 0.00% |
| ATLAS Infrastructure Partners (UK) Ltd. | 1,984,605 | 3.21% | $96.55M | New | 2.93% |
| Geode Capital Management, LLC | 1,555,391 | 2.52% | $75.68M | +79,986 | 0.00% |
| First Trust Advisors LP | 1,300,055 | 2.10% | $63.25M | −54,110 | 0.04% |
| FMR LLC | 1,281,406 | 2.07% | $62.34M | −108,608 | 0.00% |
| Dimensional Fund Advisors LP | 1,174,914 | 1.90% | $57.16M | +16,555 | 0.01% |
| Nuance Investments, LLC | 1,096,077 | 1.77% | $53.32M | −507,671 | 9.07% |
| Invesco Ltd. | 974,775 | 1.58% | $47.42M | −27,457 | 0.00% |
| Morgan Stanley | 948,112 | 1.53% | $46.13M | −170,593 | 0.00% |
| Legal & General Group Plc | 807,510 | 1.31% | $39.29M | +29,968 | 0.01% |
| ANTIPODES PARTNERS Ltd | 753,386 | 1.22% | $36.65M | New | 0.67% |
| Nomura Asset Management International Inc. | 747,216 | 1.21% | $36.35M | New | 0.05% |
| Charles Schwab Investment Management Inc | 725,290 | 1.17% | $35.29M | −3,166 | 0.00% |
| Northern Trust Corp | 708,763 | 1.15% | $34.48M | +71,460 | 0.00% |
| Aqr Capital Management LLC | 681,791 | 1.10% | $33.17M | +512,060 | 0.01% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 344 | 55M | 89.5% | 52 / 139 | 98 / 42 | 7M | 3M |
| Q1 2026 | 339 | 51M | 82.9% | 46 / 139 | 89 / 33 | 11M | 3M |
| Q4 2025 | 330 | 51M | 82.2% | 38 / 98 | 130 / 38 | 3M | 3M |
| Q3 2025 | 337 | 50M | 81.4% | 36 / 122 | 110 / 31 | 3M | 3M |
| Q2 2025 | 338 | 50M | 81.6% | 42 / 126 | 116 / 31 | 3M | 3M |
| Q1 2025 | 330 | 51M | 81.7% | 47 / 120 | 102 / 36 | 4M | 2M |
| Q4 2024 | 323 | 49M | 79.5% | 41 / 128 | 100 / 39 | 4M | 3M |
| Q3 2024 | 324 | 49M | 78.6% | 56 / 100 | 107 / 27 | 14M | 4M |
| Q2 2024 | 299 | 48M | 78.4% | 56 / 86 | 105 / 29 | 3M | 5M |
| Q1 2024 | 275 | 51M | 81.7% | 32 / 98 | 96 / 37 | 5M | 3M |
| Q4 2023 | 284 | 49M | 78.7% | 43 / 85 | 106 / 27 | 2M | 2M |
| Q3 2023 | 271 | 48M | 77.3% | 23 / 104 | 92 / 36 | 5M | 3M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of CWT | Value | % of fund | As of |
|---|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 3,606,330 | 5.83% | $175.45M | 0.16% | Jun 30, 2026 |
| Vanguard Total Stock Market Index Fund | 1,899,285 | 3.07% | $92.40M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 1,575,925 | 2.55% | $76.67M | 0.09% | Jun 30, 2026 |
| Vanguard Small-Cap Index Fund | 1,372,578 | 2.22% | $66.78M | 0.04% | Jun 30, 2026 |
| Fidelity Small Cap Value Fund | 1,281,035 | 2.07% | $64.19M | 1.17% | Jul 31, 2026 |
| T. Rowe Price Small-Cap Value Fund, Inc. | 928,280 | 1.50% | $45.16M | 0.43% | Jun 30, 2026 |
| Vanguard Small-Cap Growth Index Fund | 792,932 | 1.28% | $38.58M | 0.08% | Jun 30, 2026 |
| T. Rowe Price Small-Cap Stock Fund, Inc. | 730,311 | 1.18% | $35.53M | 0.38% | Jun 30, 2026 |
| First Trust Value Line Dividend Index Fund | 693,425 | 1.12% | $33.74M | 0.42% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 686,644 | 1.11% | $33.41M | 0.03% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 665,710 | 1.08% | $33.36M | 0.10% | Jul 31, 2026 |
| State Street(R) SPDR(R) S&P(R) Dividend ETF | 601,423 | 0.97% | $29.26M | 0.14% | Jun 30, 2026 |
| iShares Russell 2000 Value ETF | 575,538 | 0.93% | $28.00M | 0.19% | Jun 30, 2026 |
| State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF | 550,670 | 0.89% | $26.79M | 0.16% | Jun 30, 2026 |
| First Trust Water ETF | 533,228 | 0.86% | $25.94M | 1.40% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Sophie Marwieh James | VP Water Qual | 8,287 | 0.01% | Sep 8, 2026 |
| Kenneth G. Jenkins | VP Water Res Plan & Sustain | 5,126 | 0.01% | Sep 8, 2026 |
| Shawn C. Bunting | SVP, Chief Legal Officer & BD | 4,574 | 0.01% | Sep 8, 2026 |
| Michael B. Luu | SVP Corp Svce & Chief Risk Of | 23,744 | 0.04% | Sep 8, 2026 |
| Michelle R. Mortensen | VP Corp Sect, Gov & Assurance | 12,807 | 0.02% | Sep 8, 2026 |
| Kristan A. Hamner | VP, Chief Human Resource Offcr | 2,979 | 0.00% | Sep 8, 2026 |
| Elissa Y. Ouyang | VP Facilities Fleet Procure IT | 14,805 | 0.02% | Sep 8, 2026 |
| Michael S. Mares JR | SVP Operations | 8,252 | 0.01% | Sep 8, 2026 |
| Thomas A. Scanlon | VP, Corporate Controller & PAO | 5,690 | 0.01% | Sep 8, 2026 |
| Shannon C. Dean | SVP, Cust Svc & Chief Sust Of | 23,613 | 0.04% | Sep 8, 2026 |
| Martin A. Kropelnicki | Chairman President & CEO | 147,287 | 0.24% | Sep 8, 2026 |
| James Patrick Lynch | SVP CFO and Treasurer | 6,486 | 0.01% | Sep 8, 2026 |
| Todd Kenneth Peters | Vice President, Engineering | 8,259 | 0.01% | Sep 8, 2026 |
| Gregory Dale Shimansky | VP, Rates & Reg Affairs | 1,311 | 0.00% | Aug 5, 2026 |
| Greg A. Milleman | VP Rates & Regulatory Affairs | 13,708 | 0.02% | Jun 8, 2026 |
| Ronald D. Webb | VP, Human Resources | 26,580 | 0.04% | Mar 11, 2025 |
| Lester A. Snow | Director | 17,817 | 0.03% | Sep 1, 2026 |
| Thomas M. Krummel | Director | 20,104 | 0.03% | Aug 14, 2026 |
| Jeffrey Kightlinger | Director | 8,355 | 0.01% | Mar 5, 2026 |
| Scott L. Morris | Director | 15,209 | 0.02% | Mar 5, 2026 |
| Charles R. Patton | Director | 9,062 | 0.01% | Mar 5, 2026 |
| Gregory E. Aliff | Director | 26,395 | 0.04% | Mar 5, 2026 |
| Carol M. Pottenger | Director | 19,187 | 0.03% | Mar 5, 2026 |
| Shelly Marian Esque | Director | 18,331 | 0.03% | Mar 5, 2026 |
| Yvonne Aida Maldonado | Director | 12,635 | 0.02% | Mar 5, 2026 |
| Patricia K. Wagner | Director | 15,214 | 0.02% | Mar 5, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Michelle R. Mortensen VP Corp Sect, Gov & Assurance | Sep 5, 2026 | Tax withholding | −73 | $50.03 | $3.65K | 12,807 |
| Michael B. Luu SVP Corp Svce & Chief Risk Of | Sep 5, 2026 | Tax withholding | −68 | $50.03 | $3.40K | 23,744 |
| Shawn C. Bunting SVP, Chief Legal Officer & BD | Sep 5, 2026 | Tax withholding | −69 | $50.03 | $3.45K | 4,574 |
| Kenneth G. Jenkins VP Water Res Plan & Sustain | Sep 5, 2026 | Tax withholding | −38 | $50.03 | $1.90K | 5,126 |
| Todd Kenneth Peters Vice President, Engineering | Sep 5, 2026 | Tax withholding | −40 | $50.03 | $2.00K | 8,259 |
| James Patrick Lynch SVP CFO and Treasurer | Sep 5, 2026 | Tax withholding | −48 | $50.03 | $2.40K | 6,486 |
| Martin A. Kropelnicki Chairman President & CEO | Sep 5, 2026 | Tax withholding | −493 | $50.03 | $24.66K | 147,287 |
| Shannon C. Dean SVP, Cust Svc & Chief Sust Of | Sep 5, 2026 | Tax withholding | −72 | $50.03 | $3.60K | 23,613 |
| Thomas A. Scanlon VP, Corporate Controller & PAO | Sep 5, 2026 | Tax withholding | −30 | $50.03 | $1.50K | 5,690 |
| Michael S. Mares JR SVP Operations | Sep 5, 2026 | Tax withholding | −67 | $50.03 | $3.35K | 8,252 |
| Elissa Y. Ouyang VP Facilities Fleet Procure IT | Sep 5, 2026 | Tax withholding | −66 | $50.03 | $3.30K | 14,805 |
| Sophie Marwieh James VP Water Qual | Sep 5, 2026 | Tax withholding | −50 | $50.03 | $2.50K | 8,287 |
| Kristan A. Hamner VP, Chief Human Resource Offcr | Sep 4, 2026 | Tax withholding | −42 | $50.03 | $2.10K | 2,979 |
| Michelle R. Mortensen VP Corp Sect, Gov & Assurance | Sep 4, 2026 | Tax withholding | −75 | $50.03 | $3.75K | 12,880 |
| Michael B. Luu SVP Corp Svce & Chief Risk Of | Sep 4, 2026 | Tax withholding | −70 | $50.03 | $3.50K | 23,812 |
| Shawn C. Bunting SVP, Chief Legal Officer & BD | Sep 4, 2026 | Tax withholding | −71 | $50.03 | $3.55K | 4,643 |
| Kenneth G. Jenkins VP Water Res Plan & Sustain | Sep 4, 2026 | Tax withholding | −64 | $50.03 | $3.20K | 5,164 |
| Todd Kenneth Peters Vice President, Engineering | Sep 4, 2026 | Tax withholding | −41 | $50.03 | $2.05K | 8,299 |
| James Patrick Lynch SVP CFO and Treasurer | Sep 4, 2026 | Tax withholding | −50 | $50.03 | $2.50K | 6,534 |
| Martin A. Kropelnicki Chairman President & CEO | Sep 4, 2026 | Tax withholding | −505 | $50.03 | $25.27K | 147,780 |
| Shannon C. Dean SVP, Cust Svc & Chief Sust Of | Sep 4, 2026 | Tax withholding | −75 | $50.03 | $3.75K | 23,685 |
| Thomas A. Scanlon VP, Corporate Controller & PAO | Sep 4, 2026 | Tax withholding | −30 | $50.03 | $1.50K | 5,720 |
| Michael S. Mares JR SVP Operations | Sep 4, 2026 | Tax withholding | −69 | $50.03 | $3.45K | 8,319 |
| Elissa Y. Ouyang VP Facilities Fleet Procure IT | Sep 4, 2026 | Tax withholding | −68 | $50.03 | $3.40K | 14,871 |
| Sophie Marwieh James VP Water Qual | Sep 4, 2026 | Tax withholding | −51 | $50.03 | $2.55K | 8,337 |
| Lester A. Snow Director | Sep 1, 2026 | Sale | −500 | $50.21 | $25.11K | 17,817 |
| Thomas M. Krummel Director | Aug 13, 2026 | Sale | −3,700 | $50.37 | $186.37K | 20,104 |
| Gregory Dale Shimansky VP, Rates & Reg Affairs | Aug 4, 2026 | Award | +446 | – | – | 1,311 |
| Todd Kenneth Peters Vice President, Engineering | Jun 5, 2026 | Tax withholding | −40 | $45.82 | $1.83K | 8,340 |
| Elissa Y. Ouyang VP Facilities Fleet Procure IT | Jun 5, 2026 | Tax withholding | −66 | $45.82 | $3.02K | 14,939 |
| Thomas A. Scanlon VP, Corporate Controller & PAO | Jun 5, 2026 | Tax withholding | −30 | $45.82 | $1.37K | 5,723 |
| Shannon C. Dean SR. VP, Cust Svc & Chief Sust | Jun 5, 2026 | Tax withholding | −73 | $45.82 | $3.34K | 23,742 |
| James Patrick Lynch SVP CFO and Treasurer | Jun 5, 2026 | Tax withholding | −49 | $45.82 | $2.25K | 6,583 |
| Michael B. Luu SVP Corp Svce & Chief Risk Of | Jun 5, 2026 | Tax withholding | −69 | $45.82 | $3.16K | 23,807 |
| Greg A. Milleman VP Rates & Regulatory Affairs | Jun 5, 2026 | Tax withholding | −66 | $45.82 | $3.02K | 13,708 |
| Shawn C. Bunting Sr. VP, GC and Business Dev | Jun 5, 2026 | Tax withholding | −69 | $45.82 | $3.16K | 4,714 |
| Michael S. Mares JR SVP Operations | Jun 5, 2026 | Tax withholding | −68 | $45.82 | $3.12K | 8,388 |
| Martin A. Kropelnicki Chairman President & CEO | Jun 5, 2026 | Tax withholding | −493 | $45.82 | $22.59K | 148,285 |
| Sophie Marwieh James VP Water Qual | Jun 5, 2026 | Tax withholding | −50 | $45.82 | $2.29K | 8,321 |
| Michelle R. Mortensen VP Corp Sect, Gov & Assurance | Jun 5, 2026 | Tax withholding | −73 | $45.82 | $3.34K | 12,954 |
| Kenneth G. Jenkins VP Water Res Plan & Sustain | Jun 5, 2026 | Tax withholding | −38 | $45.82 | $1.74K | 5,228 |
| Todd Kenneth Peters Vice President, Engineering | Jun 4, 2026 | Tax withholding | −40 | $45.24 | $1.81K | 8,380 |
| Elissa Y. Ouyang VP Facilities Fleet Procure IT | Jun 4, 2026 | Tax withholding | −67 | $45.24 | $3.03K | 15,005 |
| Thomas A. Scanlon VP, Corporate Controller & PAO | Jun 4, 2026 | Tax withholding | −30 | $45.24 | $1.36K | 5,753 |
| Kristan A. Hamner VP, Chief Human Resource Offcr | Jun 4, 2026 | Tax withholding | −41 | $45.24 | $1.85K | 3,004 |
| Shannon C. Dean SR. VP, Cust Svc & Chief Sust | Jun 4, 2026 | Tax withholding | −74 | $45.24 | $3.35K | 23,815 |
| James Patrick Lynch SVP CFO and Treasurer | Jun 4, 2026 | Tax withholding | −49 | $45.24 | $2.22K | 6,632 |
| Michael B. Luu SVP Corp Svce & Chief Risk Of | Jun 4, 2026 | Tax withholding | −70 | $45.24 | $3.17K | 23,876 |
| Greg A. Milleman VP Rates & Regulatory Affairs | Jun 4, 2026 | Tax withholding | −67 | $45.24 | $3.03K | 13,774 |
| Shawn C. Bunting Sr. VP, GC and Business Dev | Jun 4, 2026 | Tax withholding | −70 | $45.24 | $3.17K | 4,783 |
| Michael S. Mares JR SVP Operations | Jun 4, 2026 | Tax withholding | −69 | $45.24 | $3.12K | 8,456 |
| Martin A. Kropelnicki Chairman President & CEO | Jun 4, 2026 | Tax withholding | −504 | $45.24 | $22.80K | 148,778 |
| Sophie Marwieh James VP Water Qual | Jun 4, 2026 | Tax withholding | −51 | $45.24 | $2.31K | 8,371 |
| Michelle R. Mortensen VP Corp Sect, Gov & Assurance | Jun 4, 2026 | Tax withholding | −74 | $45.24 | $3.35K | 13,027 |
| Kenneth G. Jenkins VP Water Res Plan & Sustain | Jun 4, 2026 | Tax withholding | −63 | $45.24 | $2.85K | 5,266 |
| Lester A. Snow Director | May 27, 2026 | Sale | −1,100 | $44.00 | $48.40K | 18,316 |
| Thomas M. Krummel Director | May 21, 2026 | Sale | −3,700 | $43.30 | $160.21K | 23,805 |
| Michael B. Luu Sr. VP Corp Svcs & Chief Risk | Mar 20, 2026 | Sale | −739.85 | $44.53 | $32.95K | 23,655 |
| Michael S. Mares JR Vice President, Operations | Mar 20, 2026 | Sale | −3,892 | $44.00 | $171.25K | 8,525 |
| Kenneth G. Jenkins VP Water Res Plan & Sustain | Mar 7, 2026 | Tax withholding | −281 | $45.59 | $12.81K | 5,362 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Thomas M. Krummel Director | Aug 13, 2026 | 3,700 | $184.93K | Aug 13, 2026 | Restricted Stock Vesting |
| Thomas M. Krummel Director | May 21, 2026 | 3,700 | $160.40K | May 21, 2026 | Restricted Stock Vesting |
| Mares Michael Officer | Mar 20, 2026 | 3,892 | $171.25K | Mar 20, 2026 | Restricted Stock |
| Michael B. Luu Officer, Sr. VP Corp. Svcs. & Chief Risk | Nov 22, 2024 | 985 | $50.73K | Nov 22, 2024 | Employee Stock Purchase Plan |
| Thomas M. Krummel Director | Aug 7, 2024 | 1,665 | $84.86K | Aug 7, 2024 | RSU |
| Thomas M. Krummel Director | May 1, 2024 | 4,995 | $249.76K | May 1, 2024 | RSU |
| Michelle R. Mortensen Officer, Corporate Secretary | Dec 12, 2023 | 675 | $35.48K | Dec 12, 2023 | Restricted Stock Vesting |
| Thomas M. Krummel Director | Nov 3, 2023 | 4,995 | $249.76K | Nov 2, 2023 | RSU |
| Michael B. Luu Officer, VP, Customer Service & IT | Jun 14, 2023 | 1,837 | $101.01K | Jun 14, 2023 | Employee Stock Purchase Plan |
| Robert J. Kuta Officer, VP of Engineering | May 5, 2023 | 1,000 | $56.54K | May 5, 2023 | Restricted Stock Vseting |