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; 380 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.
Key figures
- Market capNo recent share count in SEC filings
- –
- Insider buysOpen market, last 90 days
- 0
- Insider sellsLast 90 days, $15.3M in total
- 3
- 13F holdersQ2 2026, +81 vs. previous quarter
- 380
- 13F valueReported value at the end of Q2 2026
- $6.11B
- Superinvestors holdingAt the end of Q2 2026
- 3
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $901.3M
- +15.2% year over year
- Net income, FY2025
- $94.1M
- −9.2% year over year
- Free cash flow, FY2025
- -$66.6M
- −195.2% year over year
- Revenue, Q3 FY2026
- $367.7M
- +36.6% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Short interest
See short dataFrom FINRA, settlement date Oct 30, 2026.
- Short interest
- 2.97M
- Shares sold short
- Change
- −511.1K
- −14.7% vs. previous
- Days to cover
- 2.95
- At average daily volume
Superinvestors holding ACMR, Q2 2026
Go to the superinvestors tab3 superinvestors report holding ACM Research, Inc. on Form 13F. Percentages are the stock's share of each portfolio.
Southeastern Asset Management (Longleaf)
Mason Hawkins
0.9%
ACM Research, Inc.'s share of the portfolio
- Shares
- 139,478
- Value
- $17.7M
Soros Fund Management
George Soros
0.1%
ACM Research, Inc.'s share of the portfolio
- Shares
- 30,122
- Value
- $3.82M
| Superinvestor | Weight | Value |
|---|---|---|
| Maverick Capital | <0.1% | $674.4K |
Latest insider trades
See all insider tradesOpen-market purchases and sales by ACM Research, Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 10, 2026 (view filing)4:30 PM ET | Sep 8-9 | 2 days | Wang David HSee Remarks | SSaleClass A Common Stock | −140.0K | $75.93 | −$10.6M | −14.9%802.7K after | 9 lots10b5-1 |
| Aug 21, 2026 (view filing)9:30 PM ET | Aug 20 | 1 day | McKechnie MarkSee Remarks | SSaleClass A Common Stock | −55.2K | $77.27 | −$4.26M | −98.4%900 after | 3 lots10b5-1 |
| Aug 20, 2026 (view filing)4:30 PM ET | Aug 18 | 2 days | Dun HaipingDirector | SSaleClass A Common Stock | −5.00K | $81.13 | −$405.7K | −100.0%0 after | 3 lots10b5-1 |
| Jun 5, 2026 (view filing) | Jun 4-5 | 1 day | Cheav SothearaSee remarks | SSaleClass A Common Stock | −18.8K | $84.58 | −$1.59M | −15.8%100.0K after | 7 lots10b5-1 |
| Jun 5, 2026 (view filing) | Jun 3-4 | 2 days | Wang David HSee Remarks | SSaleClass A Common Stock | −100.0K | $88.35 | −$8.84M | −11.1%802.7K after | 11 lots10b5-1 |
| May 21, 2026 (view filing) | May 19 | 2 days | Dun HaipingDirector | SSaleClass A Common Stock | −5.00K | $66.22 | −$331.1K | −100.0%0 after | 4 lots10b5-1 |
| Apr 21, 2026 (view filing) | Apr 17 | 4 days | Pappis Charles CDirector | SSaleClass A Common Stock | −5.00K | $52.00 | −$260.0K | −100.0%0 after | 10b5-1 |
| Mar 13, 2026 (view filing) | Mar 12 | 1 day | McKechnie MarkSee Remarks | SSaleClass A Common Stock | −98.6K | $45.58 | −$4.49M | −99.1%900 after | 6 lots10b5-1 |
| Mar 13, 2026 (view filing) | Mar 11-12 | 2 days | Wang David HSee Remarks | SSaleClass A Common Stock | −110.0K | $46.86 | −$5.15M | −12.1%802.7K after | 5 lots10b5-1 |
| Mar 12, 2026 (view filing) | Mar 10-11 | 2 days | Liu TracyDirector | SSaleClass A Common Stock | −60.0K | $47.51 | −$2.85M | −35.1%110.8K after | 4 lots10b5-1 |
Top 10 13F holders, Q2 2026
See all 380 holdersThe largest institutional positions in ACM Research, Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8,660,842 | $1.10B | 0.02% | +675,995+8.5% | Added |
| Vanguard Portfolio Management LLC | 3,349,436 | $425.0M | 0.02% | +1,145,605+52.0% | Added |
| Vanguard Capital Management LLC | 2,462,745 | $312.5M | 0.01% | +198,408+8.8% | Added |
| Capital World Investors | 2,398,036 | $304.3M | 0.04% | +2,398,036 | New |
| State Street Corp | 2,188,254 | $277.7M | 0.01% | +182,138+9.1% | Added |
| Geode Capital Management, LLC | 1,487,797 | $188.8M | 0.01% | +116,570+8.5% | Added |
| Invesco Ltd. | 1,170,080 | $148.5M | 0.01% | +382,979+48.7% | Added |
| Value Aligned Research Advisors, LLC | 1,053,949 | $133.7M | 0.80% | +98,022+10.3% | Added |
| Ward Ferry Management (BVI) Ltd | 969,200 | $123.0M | 18.56% | +969,200 | New |
| Dimensional Fund Advisors LP | 954,474 | $121.1M | 0.02% | +235,451+32.7% | Added |
Holders of 5% or more of ACMR
See all 2 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of ACM Research, Inc..
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 12.60%7.42M shares | +6.00 ppfrom 6.60% | Oct 22, 20244 filings | Oct 2, 2025 | SEC |
| Vanguard Portfolio Management LLC | 13G | 5.31%3.41M shares | New | Jul 31, 20261 filing | Jul 31, 2026 | SEC |