ACMR
ACM Research, Inc. Class A Common Stock
stockNASDAQ
Market OpenNov 11, 2026 12:33:30 PM EST
53.42USD+9.760%(+4.75)448,156
Pre-marketNov 11, 2026 9:21:30 AM EST
52.20USD+7.253%(+3.53)
As of 2026-10-30, there were 2,971,548 shares short with a short interest of 5.11%.
ACMR Short Interest - Official
ACMR Short Position Change - Official
ACMR Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-10-30 | 5.11 | 2,971,548 | 2.95 | -511,135 | -14.68 | 69,649,196 | 58,180,216 |
| 2026-10-15 | 5.99 | 3,482,683 | 2.58 | -572,982 | -14.13 | 69,649,196 | 58,180,216 |
| 2026-09-30 | 6.94 | 4,055,665 | 3.16 | -81,020 | -1.96 | 69,649,196 | 58,438,152 |
| 2026-09-15 | 7.08 | 4,136,685 | 4.64 | +165,719 | +4.17 | 69,649,196 | 58,438,152 |
| 2026-08-31 | 6.80 | 3,970,966 | 4.37 | +685,473 | +20.86 | 69,649,196 | 58,438,152 |
| 2026-08-14 | 5.62 | 3,285,493 | 4.05 | -318,325 | -8.83 | 69,649,196 | 58,438,152 |
| 2026-07-31 | 6.17 | 3,603,818 | 3.35 | -307,389 | -7.86 | 69,109,487 | 58,438,152 |
| 2026-07-15 | 6.69 | 3,911,207 | 2.85 | +665,115 | +20.49 | 69,109,487 | 58,438,152 |
| 2026-06-30 | 5.55 | 3,246,092 | 1.53 | +887,027 | +37.60 | 69,109,487 | 58,438,152 |
| 2026-06-15 | 4.04 | 2,359,065 | 1.48 | -652,797 | -21.67 | 69,109,487 | 58,438,152 |
| 2026-05-29 | 5.45 | 3,011,862 | 1.55 | +213,480 | +7.63 | 69,109,487 | 55,223,744 |
| 2026-05-15 | 5.14 | 2,798,382 | 1.50 | +58,651 | +2.14 | 66,224,872 | 54,475,255 |
| 2026-04-30 | 5.16 | 2,739,731 | 2.39 | +73,455 | +2.75 | 66,214,872 | 53,114,350 |
| 2026-04-15 | 5.02 | 2,666,276 | 3.11 | -452,877 | -14.52 | 65,727,594 | 53,114,350 |
| 2026-03-31 | 5.87 | 3,119,153 | 3.10 | -86,178 | -2.69 | 65,727,594 | 53,114,350 |
| 2026-03-13 | 6.03 | 3,205,331 | 2.18 | -154,222 | -4.59 | 65,727,594 | 53,114,350 |
| 2026-02-27 | 6.33 | 3,359,553 | 2.47 | -291,614 | -7.99 | 64,876,451 | 53,114,350 |
| 2026-02-13 | 6.87 | 3,651,167 | 2.00 | +609,751 | +20.05 | 64,876,451 | 53,114,350 |
| 2026-01-30 | 5.73 | 3,041,416 | 2.28 | -555,307 | -15.44 | 64,876,451 | 53,114,350 |
| 2026-01-15 | 6.77 | 3,596,723 | 2.12 | -557,582 | -13.42 | 64,876,451 | 53,114,350 |
| 2025-12-31 | 7.82 | 4,154,305 | 3.58 | -457,902 | -9.93 | 64,876,451 | 53,114,350 |
| 2025-12-15 | 8.68 | 4,612,207 | 3.80 | +245,057 | +5.61 | 64,876,451 | 53,114,350 |
| 2025-11-28 | 8.22 | 4,367,150 | 4.69 | -148,095 | -3.28 | 64,876,451 | 53,114,350 |
| 2025-11-14 | 8.48 | 4,515,245 | 2.34 | +492,875 | +12.25 | 64,876,451 | 53,268,422 |
Historical data is split-adjusted.
1 Data from Finra. Finra publishes an updated file every two weeks.
2 Days to Cover (DTC) is also called Short Ratio. This is the Short Position / Average Daily Trading Volume.