Energy Recovery
ERII
184 hedge funds and large institutions have $580M invested in Energy Recovery in 2025 Q2 according to their latest regulatory filings, with 17 funds opening new positions, 72 increasing their positions, 64 reducing their positions, and 36 closing their positions.
46% more call options, than puts
Call options by funds: $1.27M | Put options by funds: $869K
13% more repeat investments, than reductions
Existing positions increased: 72 | Existing positions reduced: 64
1.64% more ownership
Funds ownership: 81.65% → 83.29% (+1.6%)
9% less funds holding
Funds holding: 203 → 184 (-19)
19% less capital invested
Capital invested by funds: $713M → $580M (-$133M)
53% less first-time investments, than exits
New positions opened: 17 | Existing positions closed: 36
100% less funds holding in top 10
Funds holding in top 10: 1 → 0 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AWG
Alpha Wave Global
New York
|
+$5.51M |
| 2 |
Jacobs Levy Equity Management
Florham Park,
New Jersey
|
+$5.46M |
| 3 |
UBS Group
Zurich,
Switzerland
|
+$4.38M |
| 4 |
KAM
Kopion Asset Management
Mckinney,
Texas
|
+$4.1M |
| 5 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
+$3.69M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Baillie Gifford & Co
Edinburgh,
United Kingdom
|
-$17.5M |
| 2 |
BlackRock
New York
|
-$4.74M |
| 3 |
UM
UniSuper Management
Melbourne, Victoria,
Australia
|
-$3.42M |
| 4 |
Citadel Advisors
Miami,
Florida
|
-$3.31M |
| 5 |
Goldman Sachs
New York
|
-$2.43M |
ERII Hedge Fund Activity: Q2 2025 in Review
184 of the 7,613 institutional investors tracked by Wall St. Rank reported a position in Energy Recovery (ERII) for Q2 2025, worth a combined $580M — down 19% from $713M a quarter earlier.
Sellers outnumbered buyers: 36 funds closed out of ERII and 17 opened new positions — a net loss of 19 holders — while 64 trimmed existing stakes and 72 added.
The largest buyer was Alpha Wave Global, adding an estimated $5.51M. The largest seller was Baillie Gifford & Co, exiting entirely with an estimated $17.5M sold.
- 184 institutional investors held Energy Recovery (ERII) as of Q2 2025, down from 203 in Q1 2025.
- Funds reported $580M of Energy Recovery stock for Q2 2025, down 19% quarter-over-quarter.
- 17 funds opened new Energy Recovery positions in Q2 2025 and 36 closed out, a net change of -19 holders.
- The largest Energy Recovery buyer in Q2 2025 was Alpha Wave Global, an estimated $5.51M added.
- The largest Energy Recovery seller in Q2 2025 was Baillie Gifford & Co, an estimated $17.5M sold.
Based on aggregated 13F filings for Q2 2025.