Yinan Xiang is Director at ACM Research, Inc. (ACMR). They have made 5 open-market trades across 1 company since 2020, most recently 2021-08-24.
CIK 0001721583
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ACMR | 1,146,170 | $60.8M |
Shares reported on the most recent Form 4, priced at the 2021-08-24 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ACMR | SELL | 2021-08-23 | 2021-08-24 | $87.30 | $28.5M | +6.1% | +17.8% | +5.3% |
| ACMR | SELL | 2021-08-18 | 2021-08-20 | $85.13 | $4.5M | +6.0% | +17.0% | +14.0% |
| ACMR | SELL | 2021-08-11 | 2021-08-13 | $85.65 | $7.1M | +9.6% | +26.5% | +27.8% |
| ACMR | SELL | 2020-12-18 | 2020-12-22 | $75.24 | $17.8M | +21.8% | +34.3% | +26.5% |
| ACMR | SELL | 2020-12-15 | 2020-12-17 | $75.51 | $5.1M | +9.0% | +41.3% | +28.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.