California Water Service
337 hedge funds and large institutions have $2.3B invested in California Water Service in 2025 Q3 according to their latest regulatory filings, with 35 funds opening new positions, 122 increasing their positions, 110 reducing their positions, and 31 closing their positions.
1,456% more call options, than puts
Call options by funds: $3.64M | Put options by funds: $234K
13% more first-time investments, than exits
New positions opened: 35 | Existing positions closed: 31
11% more repeat investments, than reductions
Existing positions increased: 122 | Existing positions reduced: 110
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
0% less funds holding
Funds holding: 338 → 337 (-1)
0.48% less ownership
Funds ownership: 84.54% → 84.06% (-0.48%)
2% less capital invested
Capital invested by funds: $2.36B → $2.3B (-$57.9M)
Top Buyers
| 1 |
Amundi
Paris,
France
|
+$17M |
| 2 |
Millennium Management
New York
|
+$16.6M |
| 3 |
Fidelity Investments
Boston,
Massachusetts
|
+$16.1M |
| 4 |
American Century Companies
Kansas City,
Missouri
|
+$5.21M |
| 5 |
BlackRock
New York
|
+$3.64M |
Top Sellers
| 1 |
KBC Group
Brussels,
Belgium
|
-$5.37M |
| 2 |
UBS AM
Chicago,
Illinois
|
-$5.04M |
| 3 |
Adage Capital Partners
Boston,
Massachusetts
|
-$4.55M |
| 4 |
JAM
Jupiter Asset Management
London,
United Kingdom
|
-$4.25M |
| 5 |
State Street
Boston,
Massachusetts
|
-$3.79M |
CWT Hedge Fund Activity: Q3 2025 in Review
337 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in California Water Service (CWT) for Q3 2025, worth a combined $2.3B — down 2.5% from $2.36B a quarter earlier.
Buyers outnumbered sellers: 35 funds opened new CWT positions and 31 closed out — a net gain of 4 holders — while 122 added to existing stakes and 110 trimmed.
The largest buyer was Amundi, adding an estimated $17M. The largest seller was KBC Group, cutting an estimated $5.37M.
- 337 institutional investors held California Water Service (CWT) as of Q3 2025, down from 338 in Q2 2025.
- Funds reported $2.3B of California Water Service stock for Q3 2025, down 2.5% quarter-over-quarter.
- 35 funds opened new California Water Service positions in Q3 2025 and 31 closed out, a net change of +4 holders.
- The largest California Water Service buyer in Q3 2025 was Amundi, an estimated $17M added.
- The largest California Water Service seller in Q3 2025 was KBC Group, an estimated $5.37M sold.
Based on aggregated 13F filings for Q3 2025.