Robert Yu Lang Mao is Director at Energy Recovery, Inc. (ERII). They have made 11 open-market trades across 2 companies since 2008, most recently 2024-05-23.
CIK 0001232218
5 open-market purchases totalling $1.1M since 2008, against 6 sales. Across 5 scored buys the stock is up 7.2% at ninety days, and 5.9 points ahead of the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 40% | 100% | 100% |
| Avg Move | +7.9% | +10.2% | +7.2% |
| Alpha | -7.6% | +9.8% | +5.9% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ERII | SELL | 2024-05-22 | 2024-05-24 | $13.86 | $583K | -2.2% | -5.3% | +28.7% |
| ERII | SELL | 2024-03-04 | 2024-03-06 | $15.74 | $1.1M | -6.2% | -4.4% | -18.1% |
| ERII | SELL | 2024-02-29 | 2024-03-04 | $15.89 | $2.5M | -8.3% | +0.5% | -14.2% |
| ERII | SELL | 2023-11-06 | 2023-11-08 | $17.93 | $6.7M | +6.4% | -1.6% | -20.1% |
| ERII | SELL | 2022-08-09 | 2022-08-11 | $22.46 | $45K | +1.3% | +12.5% | -14.3% |
| ERII | SELL | 2020-12-11 | 2020-12-15 | $12.22 | $116K | +6.1% | +13.7% | +49.8% |
| ERII | BUY | 2017-03-14 | 2017-03-14 | $7.53 | $151K | -2.5% | +3.3% | +5.6% |
| ERII | BUY | 2016-03-11 | 2016-03-15 | $9.45 | $378K | +14.2% | +31.1% | +14.3% |
| ERII | BUY | 2014-05-20 | 2014-05-21 | $4.56 | $228K | -13.2% | +1.5% | +1.5% |
| ERII | BUY | 2011-06-14 | 2011-06-23 | $2.67 | $20K | -13.2% | +1.5% | +1.5% |
| ERII | SELL · Routine | 2011-06-14 | 2011-06-16 | $2.67 | $20K | -13.2% | +1.5% | +1.5% |
| COMS | BUY | 2008-03-28 | 2008-04-01 | $2.22 | $334K | +54.3% | +13.3% | +13.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.