ENERGY RECOVERY INC's ticker is ERII and the CUSIP is 29270J100. A total of 115 filers reported holding ENERGY RECOVERY INC in Q4 2018. The put-call ratio across all filers is 0.76 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q4 2022 | $3 | -99.9% | 400 | 0.0% | 0.00% | – |
| Q3 2022 | $3,000 | 0.0% | 400 | 0.0% | 0.00% | – |
| Q2 2022 | $3,000 | 0.0% | 400 | 0.0% | 0.00% | – |
| Q1 2022 | $3,000 | -66.7% | 400 | -60.0% | 0.00% | – |
| Q3 2018 | $9,000 | +12.5% | 1,000 | 0.0% | 0.00% | – |
| Q2 2018 | $8,000 | -55.6% | 1,000 | -50.0% | 0.00% | -100.0% |
| Q1 2018 | $18,000 | 0.0% | 2,000 | 0.0% | 0.00% | 0.0% |
| Q4 2017 | $18,000 | +12.5% | 2,000 | 0.0% | 0.00% | 0.0% |
| Q3 2017 | $16,000 | -5.9% | 2,000 | 0.0% | 0.00% | 0.0% |
| Q2 2017 | $17,000 | 0.0% | 2,000 | 0.0% | 0.00% | 0.0% |
| Q1 2017 | $17,000 | +70.0% | 2,000 | +100.0% | 0.00% | – |
| Q4 2016 | $10,000 | -96.4% | 1,000 | -94.2% | 0.00% | -100.0% |
| Q3 2016 | $275,000 | +2955.6% | 17,201 | +1620.1% | 0.01% | +1300.0% |
| Q2 2016 | $9,000 | +28.6% | 1,000 | 0.0% | 0.00% | – |
| Q4 2015 | $7,000 | – | 1,000 | – | 0.00% | – |
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Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| Tortoise Index Solutions, LLC | 17,231 | $43,490,773 | 7.60% |
| Trigran Investments, Inc. | 3,469,877 | $71,097,780 | 7.13% |
| Lagoda Investment Management, L.P. | 289,520 | $5,932,265 | 4.00% |
| Avenir Corp | 1,723,386 | $35,312,179 | 3.54% |
| Montanaro Asset Management Ltd | 879,000 | $18,010,710 | 2.93% |
| Miura Global Management | 280,000 | $5,737,200 | 2.89% |
| ACK Asset Management | 727,400 | $14,904 | 2.74% |
| SCHOLTZ & COMPANY, LLC | 129,545 | $2,654 | 1.88% |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 458,560 | $9,396 | 1.46% |
| Mesirow Institutional Investment Management, Inc. | 502,150 | $10,289,054 | 1.35% |