Yiheng Capital Management L.P. 13D and 13G filings for ACM Research, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2024-11-13 12:15 pm Sale | 2024-09-30 | 13G | ACM Research, Inc. ACMR | Yiheng Capital Management L.P. | 666,304 1.200% | -4,696,825 (-87.58%) | Filing |
| 2024-02-14 4:06 pm Purchase | 2023-12-31 | 13G | ACM Research, Inc. ACMR | Yiheng Capital Management L.P. | 5,363,129 9.650% | 96,329 (+1.83%) | Filing |
| 2023-02-14 4:05 pm Purchase | 2022-12-31 | 13G | ACM Research, Inc. ACMR | Yiheng Capital Management L.P. | 5,266,800 9.690% | 1,021,500 (+24.06%) | Filing |
| 2022-02-14 4:26 pm Purchase | 2021-12-31 | 13G | ACM Research, Inc. ACMR | Yiheng Capital Management L.P. | 4,245,300 8.200% | 4,245,300 (New Position) | Filing |