California Water Service
344 hedge funds and large institutions have $2.69B invested in California Water Service in 2026 Q2 according to their latest regulatory filings, with 53 funds opening new positions, 138 increasing their positions, 98 reducing their positions, and 43 closing their positions.
100% more funds holding in top 10
Funds holding in top 10: 1 → 2 (+1)
41% more repeat investments, than reductions
Existing positions increased: 138 | Existing positions reduced: 98
23% more first-time investments, than exits
New positions opened: 53 | Existing positions closed: 43
16% more capital invested
Capital invested by funds: $2.32B → $2.69B (+$363M)
6.27% more ownership
Funds ownership: 86.03% → 92.3% (+6.3%)
1% more funds holding
Funds holding: 339 → 344 (+5)
26% less call options, than puts
Call options by funds: $54K | Put options by funds: $73K
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AIP
Atlas Infrastructure Partners
London,
United Kingdom
|
+$89.5M |
| 2 |
AP
Antipodes Partners
Royal Exchange,
Australia
|
+$34M |
| 3 |
NAMI
Nomura Asset Management International
Philadelphia,
Pennsylvania
|
+$33.7M |
| 4 |
AQR Capital Management
Greenwich,
Connecticut
|
+$23.1M |
| 5 |
BlackRock
New York
|
+$20.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CIMLRA
CBRE Investment Management Listed Real Assets
Radnor,
Pennsylvania
|
-$29.4M |
| 2 |
NI
Nuance Investments
Kansas City,
Missouri
|
-$22.9M |
| 3 |
Marshall Wace
London,
United Kingdom
|
-$11.6M |
| 4 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
-$8.48M |
| 5 |
Morgan Stanley
New York
|
-$7.69M |
CWT Hedge Fund Activity: Q2 2026 in Review
344 of the 8,317 institutional investors tracked by Wall St. Rank reported a position in California Water Service (CWT) for Q2 2026, worth a combined $2.69B — up 16% from $2.32B a quarter earlier.
Buyers outnumbered sellers: 53 funds opened new CWT positions and 43 closed out — a net gain of 10 holders — while 138 added to existing stakes and 98 trimmed.
The largest buyer was Atlas Infrastructure Partners, opening a new position worth an estimated $89.5M. The largest seller was CBRE Investment Management Listed Real Assets, exiting entirely with an estimated $29.4M sold.
- 344 institutional investors held California Water Service (CWT) as of Q2 2026, up from 339 in Q1 2026.
- Funds reported $2.69B of California Water Service stock for Q2 2026, up 16% quarter-over-quarter.
- 53 funds opened new California Water Service positions in Q2 2026 and 43 closed out, a net change of +10 holders.
- The largest California Water Service buyer in Q2 2026 was Atlas Infrastructure Partners, an estimated $89.5M added.
- The largest California Water Service seller in Q2 2026 was CBRE Investment Management Listed Real Assets, an estimated $29.4M sold.
Based on aggregated 13F filings for Q2 2026.