ERII Energy Recovery, Inc.
Energy Recovery, Inc. (ERII) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC Quant | Sold Out | -144.3K | -100.0% | $1.3M | 0.0% | 60 |
| Select Equity Group Long/Short Growth | Sold Out | -394.2K | -100.0% | $3.6M | 0.0% | 60 |
| Point72 Asset Management, L.P. | New | +82.8K | — | $747.0K | 0.0% | 59 |
| MILLENNIUM MANAGEMENT LLC | Sold Out | -322.3K | -100.0% | $2.9M | 0.0% | 59 |
| Tudor Investment Corporation Macro | New | +471.9K | — | $4.3M | 0.0% | 56 |
| D. E. Shaw & Co., Inc. Quant | Increased | +204.8K | +1473.4% | $1.8M | 0.0% | 54 |
| Caxton Associates Macro | Sold Out | -25.7K | -100.0% | $232.1K | 0.0% | 53 |
| Trexquant Investment Quant | Sold Out | -136.0K | -100.0% | $1.2M | 0.0% | 53 |
| TWO SIGMA INVESTMENTS, LP Quant | Increased | +143.9K | +161.9% | $1.3M | 0.0% | 53 |
| Quadrature Capital Quant | Sold Out | -33.6K | -100.0% | $302.7K | 0.0% | 53 |
Most significant buyers
By move score, not size.
- Point72 Asset Management, L.P.
- Tudor Investment Corporation
- D. E. Shaw & Co., Inc.
- TWO SIGMA INVESTMENTS, LP
- ExodusPoint Capital Management
Most significant sellers
By move score, not size.
- RENAISSANCE TECHNOLOGIES LLC
- Select Equity Group
- MILLENNIUM MANAGEMENT LLC
- Caxton Associates
- Trexquant Investment
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | 1 | 0 | 144.3K | -144.3K | -100.0% | 0.0% | Sold Out | 60 |
| Select Equity Group | 1 | 0 | 394.2K | -394.2K | -100.0% | 0.0% | Sold Out | 60 |
| Point72 Asset Management, L.P. | 1 | 82.8K | 0 | +82.8K | — | 0.0% | New | 59 |
| MILLENNIUM MANAGEMENT LLC | 2 | 0 | 322.3K | -322.3K | -100.0% | 0.0% | Sold Out | 59 |
| Tudor Investment Corporation | 2 | 471.9K | 0 | +471.9K | — | 0.0% | New | 56 |
| D. E. Shaw & Co., Inc. | 1 | 218.7K | 13.9K | +204.8K | +1473.4% | 0.0% | Increased | 54 |
| Caxton Associates | 3 | 0 | 25.7K | -25.7K | -100.0% | 0.0% | Sold Out | 53 |
| Trexquant Investment | 3 | 0 | 136.0K | -136.0K | -100.0% | 0.0% | Sold Out | 53 |
| TWO SIGMA INVESTMENTS, LP | 2 | 232.8K | 88.9K | +143.9K | +161.9% | 0.0% | Increased | 53 |
| Quadrature Capital | 3 | 0 | 33.6K | -33.6K | -100.0% | 0.0% | Sold Out | 53 |
| ExodusPoint Capital Management | 3 | 55.4K | 0 | +55.4K | — | 0.0% | New | 52 |
| MARSHALL WACE, LLP | 2 | 677.2K | 106.3K | +571.0K | +537.1% | 0.0% | Increased | 52 |
| Balyasny Asset Management L.P. | 2 | 97.4K | 10.7K | +86.7K | +809.1% | 0.0% | Increased | 51 |
| Y-Intercept | 4 | 120.4K | 0 | +120.4K | — | 0.0% | New | 50 |
| Brevan Howard Capital Management | 3 | 31.4K | 0 | +31.4K | — | 0.0% | New | 49 |
| Squarepoint Ops LLC | 2 | 125.1K | 41.9K | +83.3K | +198.8% | 0.0% | Increased | 48 |
| Aquatic Capital Management | 4 | 0 | 24.1K | -24.1K | -100.0% | 0.0% | Sold Out | 48 |
| Engineers Gate | 4 | 21.1K | 0 | +21.1K | — | 0.0% | New | 48 |
| AQR Capital Management | 3 | 262.8K | 58.3K | +204.5K | +350.6% | 0.0% | Increased | 47 |
| Quantbot Technologies | 4 | 3.6K | 0 | +3.6K | — | 0.0% | New | 45 |
| CenterBook Partners | 4 | 420.5K | 271.8K | +148.7K | +54.7% | 0.2% | Increased | 34 |
| CITADEL ADVISORS LLC | 1 | 476.2K | 449.4K | +26.8K | +6.0% | 0.0% | Increased | 28 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.