California Water Service Group Ownership | Who Owns California Water Service Group?


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California Water Service Group Ownership Summary


California Water Service Group is owned by 83.12% institutional investors, 0.63% insiders, and 16.25% retail investors. Blackrock is the largest institutional shareholder, holding 17.87% of CWT shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.95% of its assets in California Water Service Group shares.

CWT Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockCalifornia Water Service Group83.12%0.63%16.25%
SectorUtilities Stocks39.62%7.97%52.41%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock10.32M17.87%$500.39M
Blackrock funding, inc. /de10.45M17.55%$479.47M
Vanguard group7.31M12.28%$335.56M
T. rowe price investment management3.30M5.54%$151.48M
State street3.10M5.21%$142.30M
Amundi2.28M3.82%$104.32M
Nuance investments1.76M2.96%$80.97M
Geode capital management1.42M2.38%$65.00M
First trust advisors lp1.40M2.36%$64.44M
Fmr1.40M2.36%$64.39M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Nuance investments1.76M8.24%$80.97M
Beck bode402.26K2.98%$18.46M
Triodos investment management bv493.00K1.64%$22.62M
Northstar asset management106.05K1.27%$4.87M
Penn mutual asset management14.95K1.20%$679.93K
Wulff, hansen21.23K0.84%$974.01K
Nia impact advisors37.61K0.56%$1.73M
Teton advisors20.06K0.56%$912.33K
Bridge city capital44.88K0.55%$2.06M
Jackson creek investment advisors37.53K0.50%$1.72M

Top Buyers

HolderShares% AssetsChange
Norges bank838.26K0.01%838.26K
Amundi2.28M0.03%369.43K
Fmr1.40M0.00%350.54K
American century companies227.82K0.01%113.19K
Blackrock funding, inc. /de10.45M0.01%79.02K

Top Sellers

HolderShares% AssetsChange
Impax asset management group---861.34K
Blackrock10.32M0.01%-414.95K
Deprince race & zollo---267.34K
Granite investment partners---266.78K
1832 asset management---200.00K

New Positions

HolderShares% AssetsChangeValue
Norges bank838.26K0.01%838.26K$38.00M
Jackson creek investment advisors37.53K0.50%37.53K$1.72M
Voloridge investment management22.32K0.00%22.32K$1.02M
Brevan howard capital management lp18.80K0.00%18.80K$862.50K
Capstone investment advisors10.26K0.00%10.26K$470.97K

Sold Out

HolderChange
Claris advisors, llc / mo /-2.00
Tfo-tdc-2.00
Mendota financial group-5.00
Global financial private client-5.00
Castleview partners-6.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Sep 30, 2025322-3.59%49,491,183-1.53%831.17%149-10.24%105-9.48%
Jun 30, 20253280.31%50,158,6170.79%841.20%165-1.20%11414.00%
Mar 31, 20253230.94%49,733,3351.32%831.20%167-98-
Dec 31, 2024317-0.94%49,071,6532.54%831.26%1646.49%97-7.62%
Sep 30, 20243187.07%47,854,136-1.00%811.16%1548.45%1040.97%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
iShares Core S&P Small-Cap ETF3.54M5.95%-
Vanguard US Total Market Shares ETF1.91M3.21%92.03K
Vanguard Total Stock Mkt Idx Inv1.86M3.12%-39.38K
Vanguard Small Cap Index1.45M2.43%-9.86K
iShares Russell 2000 ETF1.43M2.41%-
Fidelity Small Cap Value Fund1.04M1.75%85.00K
Amundi - KBI Aqua ISR C1.01M1.70%132.78K
Nuance Mid Cap Value Separate Account948.42K1.59%-349.00K
T. Rowe Price Small-Cap Value928.21K1.56%-2.13K
First Trust Value Line® Dividend ETF842.17K1.41%213.00

Recent Insider Transactions


DateNameRoleActivityValue
Jun 12, 2025Snow Lester A-Sell$55.81K
Nov 22, 2024Luu Michael B Sr. VP Corp Svcs & Chief RiskSell$50.73K
Sep 04, 2024Krummel Thomas M-Sell$30.57K
Aug 21, 2024Krummel Thomas M-Sell$30.15K
Aug 07, 2024Krummel Thomas M-Sell$29.36K

Insider Transactions Trends


DateBuySell
2025 Q3--
2025 Q2-1
2025 Q1--
2024 Q4-1
2024 Q3-5

CWT Ownership FAQ


Who owns the most shares of California Water Service Group?

California Water Service Group’s largest shareholders are Blackrock (10.32M shares, 17.87%), Blackrock funding, inc. /de (10.45M shares, 17.55%), and Vanguard group (7.31M shares, 12.28%). Together, they hold 47.70% of California Water Service Group’s total shares outstanding.

Does Blackrock own California Water Service Group?

Yes, BlackRock owns 17.87% of California Water Service Group, totaling 10.32M shares as of Jun 2024. This represents 0.01% of BlackRock's total assets, with a market value of 500.39M$. In the last quarter, BlackRock decreased its holdings by -415K shares, a -3.87% change.

Who is California Water Service Group’s biggest shareholder by percentage of total assets invested?

Nuance investments is California Water Service Group’s biggest shareholder by percentage of total assets invested, with 8.24% of its assets in 1.76M California Water Service Group shares, valued at 80.97M$.

Who is the top mutual fund holder of California Water Service Group shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of California Water Service Group shares, with 5.95% of its total shares outstanding invested in 3.54M California Water Service Group shares.

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