ACM Research, Inc.
ACMR- Exchange
- Nasdaq
- Industry
- Special Industry Machinery, NEC
- SEC CIK
- 0001680062
In the last 90 days, ACM Research, Inc. insiders filed 0 open-market purchases and 3 sales; 377 institutions reported holding it in 13F filings for Q2 2026, worth $6.11B in total; 3 superinvestors hold it, including Southeastern Asset Management (Longleaf) and Soros Fund Management.
Superinvestors holding ACMR, Q2 2026
3 superinvestors report holding ACM Research, Inc. on Form 13F, worth $22.2M in total. Weight is ACM Research, Inc.'s share of each 13F portfolio; actions compare shares with Q1 2026.
| Superinvestor | % of portfolio | Shares | Value | vs. previous quarter |
|---|---|---|---|---|
| Southeastern Asset Management (Longleaf)Mason Hawkins | 0.9% | 139,478 | $17.7M | Reduced−82.2% |
| Soros Fund ManagementGeorge Soros | 0.1% | 30,122 | $3.82M | New |
| Maverick CapitalLee Ainslie | <0.1% | 5,315 | $674.4K | New |
Moves by quarter
Superinvestors that opened, added to, trimmed or sold out of ACMR each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.
Q2 2026
3 superinvestors holding at quarter end
- New
- Soros Fund Management, Maverick Capital
- Reduced
- Southeastern Asset Management (Longleaf) (−82.2%)
Q1 2026
1 superinvestor holding at quarter end
- Reduced
- Southeastern Asset Management (Longleaf) (−53.4%)
Q4 2025
1 superinvestor holding at quarter end
- Added
- Southeastern Asset Management (Longleaf) (+13.1%)
Q3 2025
1 superinvestor holding at quarter end
- Added
- Southeastern Asset Management (Longleaf) (+25.3%)
Q2 2025
1 superinvestor holding at quarter end
Q4 2022
0 superinvestors holding at quarter end
- Sold out
- HHLR Advisors (Hillhouse)
Q4 2021
1 superinvestor holding at quarter end
- Sold out
- Maverick Capital
Q3 2021
2 superinvestors holding at quarter end
- Added
- Maverick Capital (+21.8%)
Q2 2021
2 superinvestors holding at quarter end
- Added
- Maverick Capital (+10.9%)