California Water Service Group

CWT • NYSE

California Water Service Group is a regulated water company in the utilities sector on NYSE, led by Martin A. Kropelnicki, with a market cap of $2.6B. As of Q3 2025, 83% of shares are held by 326 institutional investors, with BlackRock, Inc. as the largest holder at 17.54%.

Chairman of the BoardMartin A. Kropelnicki

Market Cap$2.6B

Regulated Water

Utilities

Employees1.3K

Websitecalwatergroup.com

Country

United States of America

Overview

Overview of institutional ownership in CWT as of Q3 2025 with a market cap of $2.7B

All Institutions

Institutions: 326
Value Held: $2.3B
Shares Held: 49.5M
Avg Position: $7.0M
Median Position: $498.0K

Hedge Funds

Hedge Funds: 28
Value Held: $67.4M
Shares Held: 1.5M
Avg Position: $2.4M
Median Position: $939.8K

Ownership Breakdown

Institutional (non-HF)

80.6%

$2.2B

Hedge Funds

2.47%

$67.4M

Retail & Other

16.94%

$463.1M

Based on market cap of $2.7B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in CWT as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
B BlackRock, Inc. Institution	-	$479.5M 0.01% of portfolio	17.54% 10.4M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
VANGUARD GROUP INC Institution	Salim Ramji CEO	$335.6M 0.01% of portfolio	12.27% 7.3M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
T T. Rowe Price Investment Management, Inc. Insurance Manager	John Edward Robison President	$151.5M 0.09% of portfolio	5.54% 3.3M shares	Q3 2022 Held for 3y 2m	$161.58B
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$142.3M 0.00% of portfolio	5.20% 3.1M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
A Amundi Institution	-	$104.3M 0.03% of portfolio	3.82% 2.3M shares	Q1 2022 Held for 3y 8m	$311.18B
NUANCE INVESTMENTS, LLC Long Only Manager	Kathryn Suzanne Carver President	$81.0M 8.24% of portfolio	2.96% 1.8M shares	Q2 2019 Held for 6y 5m	$982.1M
GEODE CAPITAL MANAGEMENT LLC ETF Provider	David Kenneth Lane CEO	$65.0M 0.00% of portfolio	2.38% 1.4M shares	≤ Q2 2013 Held for 12y 5m+	$1.57T
FIRST TRUST ADVISORS LP ETF Provider	James Allen Bowen CEO	$64.4M 0.05% of portfolio	2.36% 1.4M shares	≤ Q2 2013 Held for 12y 5m+	$134.11B
FMR LLC Institution	-	$64.4M 0.00% of portfolio	2.35% 1.4M shares	Q3 2018 Held for 7y 2m	$1.92T
DIMENSIONAL FUND ADVISORS LP Long Only Manager	David Paul Butler CEO	$52.7M 0.01% of portfolio	1.93% 1.1M shares	≤ Q2 2013 Held for 12y 5m+	$466.32B

Net Capital Flow

Institutional buying and selling activity for CWT in Q3 2025

Traded: +$26.0M
Buyers: 154
Sellers: 136
Total Bought: +$107.7M
Total Sold: −$81.6M
Avg Position: $6.3M

Biggest Buyers

Institution	Net Bought	Current Position
A Amundi Institution	+$16.9M +369.4K shares	$104.3M 2.3M shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$16.6M +361.3K shares	$16.9M 368.1K shares
FMR LLC Institution	+$16.1M +350.5K shares	$64.4M 1.4M shares
A AMERICAN CENTURY COMPANIES INC Institution	+$5.2M +113.2K shares	$10.5M 227.8K shares
B BlackRock, Inc. Institution	+$3.6M +79.0K shares	$479.5M 10.4M shares
UBS Group AG Institution	+$3.2M +68.9K shares	$11.0M 240.1K shares
FIRST TRUST ADVISORS LP ETF Provider	+$2.7M +59.4K shares	$64.4M 1.4M shares
L LEGAL & GENERAL GROUP PLC Institution	+$2.5M +53.9K shares	$34.9M 760.3K shares
AQR CAPITAL MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$1.9M +40.6K shares	$5.2M 114.2K shares
Jackson Creek Investment Advisors LLC Long Only Manager	+$1.7M +37.5K shares	$1.7M 37.5K shares

Biggest Sellers

Institution	Net Sold	Current Position
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC Long Only Manager	−$5.0M −109.4K shares	$11.1M 241.8K shares
A ADAGE CAPITAL PARTNERS GP LLC Institution	−$4.5M −100.0K shares	Sold Off 0 shares
JUPITER ASSET MANAGEMENT LTD Long Only Manager	−$4.3M −93.5K shares	Sold Off 0 shares
STATE STREET CORP Institution	−$3.8M −82.3K shares	$142.3M 3.1M shares
R ROYAL BANK OF CANADA Institution	−$3.4M −74.7K shares	$2.5M 53.8K shares
Advisors Preferred, LLC Institution	−$3.2M −69.6K shares	Sold Off 0 shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	−$3.1M −66.7K shares	$403.1K 8.8K shares
VANGUARD GROUP INC Institution	−$2.9M −64.2K shares	$335.6M 7.3M shares
NORTHERN TRUST CORP Institution	−$2.7M −58.1K shares	$30.1M 655.3K shares
MORGAN STANLEY RIA/Wealth	−$2.6M −57.4K shares	$36.8M 802.1K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited CWT in Q3 2025

New Positions: 13
New Value: $3.3M
Exited Positions: 30
Exited Value: $28.4M

New Positions

Institution	Position Value
Jackson Creek Investment Advisors LLC Long Only Manager	$1.7M 37.5K shares
M MAVEN SECURITIES Ltd Private Equity	$1.2M 27.1K shares
HOHIMER WEALTH MANAGEMENT, LLC RIA/Wealth	$214.4K 4.7K shares
Aster Capital Management Ltd RIA/Wealth	$43.1K 939.0 shares
S Salomon & Ludwin, LLC Institution	$15.8K 347.0 shares
Westfuller Advisors, LLC RIA/Wealth	$12.1K 265.0 shares
B BRYN MAWR TRUST CO/PA Institution	$4.3K 94.0 shares
R Root Financial Partners, LLC RIA/Wealth	$3.2K 70.0 shares
Sunbelt Securities, Inc. RIA/Wealth	$1.7K 37.0 shares
Tortoise Investment Management, LLC RIA/Wealth	$1.3K 29.0 shares

Exited Positions

Institution	Previous Position
A ADAGE CAPITAL PARTNERS GP LLC Institution	$4.5M 100.0K shares
JUPITER ASSET MANAGEMENT LTD Long Only Manager	$4.3M 93.5K shares
Advisors Preferred, LLC Institution	$3.2M 69.6K shares
Q Qube Research & Technologies Ltd Institution	$2.5M 54.3K shares
ENVESTNET ASSET MANAGEMENT INC Long Only Manager	$2.2M 48.2K shares
O ODDO BHF ASSET MANAGEMENT SAS Institution	$1.9M 41.7K shares
Kovitz Investment Group Partners, LLC RIA/Wealth	$1.7M 36.8K shares
Atom Investors LP Hedge Fund•Market Neutral	$1.5M 31.9K shares
T TEXAS PERMANENT SCHOOL FUND Institution	$1.0M 22.2K shares
T TWINBEECH CAPITAL LP Hedge Fund•Quant	$948.0K 20.8K shares

Options Activity

Institutions with the largest Call and Put options positions in CWT as of Q3 2025

Call Positions: 3
Call Value: $3.3M
Put Positions: 1
Put Value: $234.0K

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$1.6M 354.0 contracts
W WOLVERINE TRADING, LLC Institution	$1.2M 269.0 contracts
J JANE STREET GROUP, LLC Institution	$436.0K 95.0 contracts

Put Positions

Institution	Position Value
J JANE STREET GROUP, LLC Institution	$234.0K 51.0 contracts

Most Committed Institutions

Institutions with CWT as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
NUANCE INVESTMENTS, LLC Long Only Manager	Kathryn Suzanne Carver President	8.24% $81.0M	2.96% 1.8M shares	Q2 2019 Held for 6y 5m	$982.1M
Beck Bode, LLC RIA/Wealth	Benjamin W Beck Managing Partner	2.98% $18.5M	0.68% 402.3K shares	Q1 2025 Held for 8 months	$618.9M
Penn Mutual Asset Management, LLC Insurance Manager	David Michael O'Malley Chairman	1.69% $686.1K	0.03% 15.0K shares	Q3 2024 Held for 1y 2m	$40.7M
T Triodos Investment Management BV Institution	-	1.64% $22.6M	0.83% 493.0K shares	Q1 2024 Held for 1y 8m	$1.4B
NORTHSTAR ASSET MANAGEMENT INC RIA/Wealth	Julie N.W. Goodridge CEO	1.27% $4.9M	0.18% 106.1K shares	Q1 2021 Held for 4y 8m	$384.6M
WULFF, HANSEN & CO. RIA/Wealth	Robert John Pankratz President	0.84% $974.0K	0.04% 21.2K shares	Q4 2021 Held for 3y 11m	$116.2M
NIA IMPACT ADVISORS, LLC Long Only Manager	Kristin Blair Hull CEO	0.56% $1.7M	0.06% 37.6K shares	Q1 2024 Held for 1y 8m	$307.7M
Bridge City Capital, LLC Long Only Manager	Alexander Jackson Woodward President	0.55% $2.1M	0.08% 44.9K shares	Q2 2020 Held for 5y 5m	$374.5M
Jackson Creek Investment Advisors LLC Long Only Manager	Mark Frederick Jaeger Managing Partner	0.50% $1.7M	0.06% 37.5K shares	Q3 2025 Held for 2 months	$345.2M
CBRE CLARION SECURITIES LLC Real Assets	Joseph Patrick Smith President	0.48% $33.5M	1.23% 730.3K shares	Q1 2024 Held for 1y 8m	$7.0B

Hedge Fund Spotlight

Discover hedge funds investing in CWT

CAPITAL FUND MANAGEMENT S.A.

Hedge Fund • Quant Macro

Portfolio ManagerJacques Charles Sauliere

Portfolio Value: $10.0B
Positions: 792
Last Reported: Q3 2025

Sector Allocation

Position in California Water Service Group

Market Value: $668.3K
Shares Held: 14.6K
Portfolio Weight: 0.01%
Owned Since: 2025-Q2

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