California Water Service Group Ownership | Who Owns California Water Service Group?
California Water Service Group Ownership Summary
California Water Service Group is owned by 93.74% institutional investors, 0.65% insiders, and 5.61% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 18.02% of CWT shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.89% of its assets in California Water Service Group shares.
CWT Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | California Water Service Group | 93.74% | 0.65% | 5.61% |
| Sector | Utilities Stocks | 156.66% | 6.96% | -63.62% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 10.76M | 18.02% | $523.25M |
| Blackrock | 10.32M | 17.87% | $500.39M |
| Vanguard group | 7.35M | 12.33% | $318.32M |
| T. rowe price investment management | 3.52M | 5.89% | $171.11M |
| Amundi | 3.49M | 5.84% | $169.74M |
| State street | 3.27M | 5.47% | $158.93M |
| Vanguard capital management | 2.69M | 4.51% | $130.90M |
| Atlas infrastructure partners (uk) | 1.98M | 3.32% | $96.55M |
| Geode capital management | 1.56M | 2.61% | $75.68M |
| First trust advisors lp | 1.30M | 2.18% | $63.25M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Nuance investments | 1.10M | 9.07% | $53.32M |
| Beck bode | 426.69K | 3.14% | $20.76M |
| Atlas infrastructure partners (uk) | 1.98M | 2.93% | $96.55M |
| Nia impact advisors | 85.84K | 1.73% | $4.18M |
| Triodos investment management bv | 493.00K | 1.46% | $23.98M |
| Wulff, hansen | 19.21K | 0.72% | $934.81K |
| Northstar asset management | 48.19K | 0.69% | $2.34M |
| Antipodes partners | 753.39K | 0.67% | $36.65M |
| Teton advisors | 20.06K | 0.56% | $912.33K |
| Nverses capital | 6.06K | 0.45% | $294.96K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Atlas infrastructure partners (uk) | 1.98M | 2.93% | 1.98M |
| Antipodes partners | 753.39K | 0.67% | 753.39K |
| Macquarie management | 747.22K | 0.05% | 747.22K |
| Sixth street partners management company | 725.29K | 0.00% | 725.29K |
| Aqr capital management | 681.79K | 0.01% | 512.06K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Impax asset management group | - | - | -861.34K |
| Cbre investment management listed real assets | - | - | -647.51K |
| Nuance investments | 1.10M | 9.07% | -507.67K |
| Blackrock | 10.32M | 0.01% | -414.95K |
| Deprince race & zollo | - | - | -267.34K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Atlas infrastructure partners (uk) | 1.98M | 2.93% | 1.98M | $96.55M |
| Antipodes partners | 753.39K | 0.67% | 753.39K | $36.65M |
| Macquarie management | 747.22K | 0.05% | 747.22K | $36.35M |
| Sixth street partners management company | 725.29K | 0.00% | 725.29K | $35.29M |
| Panagora asset management | 152.98K | 0.02% | 152.98K | $7.44M |
Sold Out
| Holder | Change |
|---|---|
| Curio wealth | -1.00 |
| Tfo-tdc | -2.00 |
| Claris advisors, llc / mo / | -2.00 |
| Private wealth asset management | -3.00 |
| Abound wealth management | -4.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 30, 2026 | 341 | 0.89% | 55,960,858 | 9.15% | 93 | 1.27% | 188 | 1.08% | 98 | 11.36% |
| Mar 31, 2026 | 332 | 1.22% | 51,258,091 | 2.40% | 85 | 1.22% | 184 | 35.29% | 85 | -33.59% |
| Dec 31, 2025 | 283 | -16.27% | 39,487,503 | -21.06% | 66 | 0.94% | 114 | -27.85% | 109 | - |
| Sep 30, 2025 | 322 | -3.59% | 49,491,183 | -1.53% | 83 | 1.17% | 149 | -10.24% | 105 | -9.48% |
| Jun 30, 2025 | 328 | 0.31% | 50,158,617 | 0.79% | 84 | 1.20% | 165 | -1.20% | 114 | 14.00% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.64M | 5.89% | -2.59K |
| Vanguard US Total Market Shares ETF | 1.91M | 3.21% | 92.03K |
| Vanguard Total Stock Mkt Idx Inv | 1.90M | 3.17% | -8.24K |
| Vanguard Morn Total Stk Mkt Idx Investor | 1.90M | 3.17% | -8.24K |
| iShares Russell 2000 ETF | 1.54M | 2.49% | -27.36K |
| Vanguard Small Cap Index | 1.37M | 2.29% | -285.00 |
| Fidelity Small Cap Value Fund | 1.18M | 1.98% | -108.60K |
| Amundi KBI Aqua C | 1.12M | 1.81% | -37.44K |
| Amundi - KBI Aqua ISR C | 1.01M | 1.70% | 132.78K |
| KBI Water A GBP | 936.95K | 1.57% | -61.09K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Aug 13, 2026 | Krummel Thomas M | - | Sell | $186.35K |
| May 27, 2026 | Snow Lester A | - | Sell | $48.40K |
| May 21, 2026 | Krummel Thomas M | - | Sell | $160.21K |
| Mar 20, 2026 | Luu Michael B | Sr. VP Corp Svcs & Chief Risk | Sell | $32.95K |
| Mar 20, 2026 | Mares Michael S JR | Vice President, Operations | Sell | $171.25K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q3 | - | 1 |
| 2026 Q2 | - | 2 |
| 2026 Q1 | - | 2 |
| 2025 Q4 | 1 | 1 |
| 2025 Q3 | - | - |
CWT Ownership FAQ
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