Real time Form 13D and 13G transaction reports:
- 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.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Reported DateTime |
Transaction Date |
Type | Company Symbol |
Filed By Symbol |
Shares Owned % Owned |
Shares Vs. Prev Report | View |
| 2025-04-17 09:35 am Sale |
2025-03-31 | 13G | ACM Research, Inc. ACMR |
BLACKROCK INC BLK |
3,828,440 6.600% |
-613,897 (-13.82%) |
Filing History |
| 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 History |
| 2024-11-08 5:31 pm Unchanged |
2024-09-30 | 13G | ACM Research, Inc. ACMR |
BLACKROCK INC BLK |
4,442,337 7.700% |
0 (Unchanged) |
Filing History |
| 2024-10-29 9:30 pm Unchanged |
2024-10-25 | 13D | ACM Research, Inc. ACMR |
Shanghai Science & Technology Venture Capital (Group) Co. Ltd. | 3,358,728 5.800% |
0 (Unchanged) |
Filing History |
| 2024-10-22 3:24 pm Purchase |
2024-09-30 | 13G | ACM Research, Inc. ACMR |
BLACKROCK INC BLK |
4,442,337 7.700% |
716,812 (+19.24%) |
Filing History |
| 2024-10-08 9:38 pm Sale |
2024-10-04 | 13D | ACM Research, Inc. ACMR |
Shanghai Science & Technology Venture Capital (Group) Co. Ltd. | 3,358,728 5.800% |
-79,782 (-2.32%) |
Filing History |
| 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 History |
| 2024-02-13 4:55 pm Purchase |
2023-12-29 | 13G | ACM Research, Inc. ACMR |
The Vanguard Group | 4,057,397 7.300% |
1,157,977 (+39.94%) |
Filing History |
| 2024-01-26 5:25 pm Purchase |
2023-12-31 | 13G | ACM Research, Inc. ACMR |
BLACKROCK INC BLK |
3,725,525 6.700% |
504,095 (+15.65%) |
Filing History |
| 2023-07-18 08:50 am Unchanged |
2023-07-18 | 13D | ACM Research, Inc. ACMR |
Shanghai Science & Technology Venture Capital (Group) Co. Ltd. | 3,438,510 6.300% |
0 (Unchanged) |
Filing History |
| 2023-07-18 08:49 am Unchanged |
2023-07-18 | 13G | ACM Research, Inc. ACMR |
Shanghai Science & Technology Venture Capital (Group) Co. Ltd. | 3,438,510 6.300% |
0 (Unchanged) |
Filing History |
| 2023-06-13 5:02 pm Unchanged |
2023-05-29 | 13D | ACM Research, Inc. ACMR |
Shanghai Science & Technology Venture Capital (Group) Co. Ltd. | 3,438,510 6.300% |
0 (Unchanged) |
Filing History |
| 2023-06-13 5:00 pm Purchase |
2022-12-31 | 13G | ACM Research, Inc. ACMR |
Shanghai Science & Technology Venture Capital (Group) Co. Ltd. | 3,438,510 6.300% |
3,438,510 (New Position) |
Filing History |
| 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 History |
| 2023-02-13 2:57 pm Purchase |
2022-12-31 | 13G | ACM Research, Inc. ACMR |
BLACKROCK INC BLK |
3,221,430 5.900% |
3,221,430 (New Position) |
Filing History |
| 2023-02-09 4:42 pm Sale |
2023-01-31 | 13G | ACM Research, Inc. ACMR |
MORGAN STANLEY MS |
390,606 0.700% |
-2,382,898 (-85.92%) |
Filing History |
| 2023-02-09 10:54 am Purchase |
2022-12-30 | 13G | ACM Research, Inc. ACMR |
The Vanguard Group | 2,899,420 5.330% |
2,899,420 (New Position) |
Filing History |
| 2023-02-08 12:59 pm Sale |
2022-12-30 | 13G | ACM Research, Inc. ACMR |
MORGAN STANLEY MS |
2,773,504 5.100% |
-1,120,244 (-28.77%) |
Filing History |
| 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 History |
| 2022-02-09 4:07 pm Purchase |
2021-12-31 | 13G | ACM Research, Inc. ACMR |
MORGAN STANLEY MS |
3,893,748 7.300% |
831,474 (+27.15%) |
Filing History |