ACIU
AC Immune SA
stockNASDAQ
Market OpenNov 13, 2026 1:44:12 PM EST
2.12USD-1.168%(-0.02)81,169
As of 2026-10-30, there were 2,947,102 shares short with a short interest of 4.71%.
ACIU Short Interest - Official
ACIU Short Position Change - Official
ACIU 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 | 4.71 | 2,947,102 | 16.88 | -317,345 | -9.72 | 99,426,932 | 62,561,292 |
| 2026-10-15 | 5.22 | 3,264,447 | 14.88 | -260,177 | -7.38 | 99,426,932 | 62,561,292 |
| 2026-09-30 | 5.63 | 3,524,624 | 18.74 | +49,152 | +1.41 | 99,426,932 | 62,574,319 |
| 2026-09-15 | 5.55 | 3,475,472 | 25.00 | +179,341 | +5.44 | 99,426,932 | 62,574,319 |
| 2026-08-31 | 5.27 | 3,296,131 | 14.99 | -109,776 | -3.22 | 99,426,932 | 62,574,319 |
| 2026-08-14 | 5.44 | 3,405,907 | 14.29 | -145,415 | -4.09 | 99,426,932 | 62,574,319 |
| 2026-07-31 | 5.68 | 3,551,322 | 18.18 | +155,373 | +4.58 | 101,773,573 | 62,574,319 |
| 2026-07-15 | 5.43 | 3,395,949 | 13.27 | +19,017 | +0.56 | 101,773,573 | 62,574,319 |
| 2026-06-30 | 5.40 | 3,376,932 | 12.99 | -139,260 | -3.96 | 101,773,573 | 62,574,319 |
| 2026-06-15 | 5.61 | 3,516,192 | 9.60 | +162,721 | +4.85 | 101,773,573 | 62,674,871 |
| 2026-05-29 | 5.35 | 3,353,471 | 16.31 | +127,018 | +3.94 | 101,773,573 | 62,674,871 |
| 2026-05-15 | 5.24 | 3,226,453 | 10.12 | +192,340 | +6.34 | 101,773,573 | 61,540,600 |
| 2026-04-30 | 4.99 | 3,034,113 | 12.91 | +100,590 | +3.43 | 101,773,573 | 60,780,746 |
| 2026-04-15 | 4.83 | 2,933,523 | 10.01 | -30,944 | -1.04 | 101,773,573 | 60,780,746 |
| 2026-03-31 | 4.88 | 2,964,467 | 14.59 | -127,392 | -4.12 | 101,773,573 | 60,780,746 |
| 2026-03-13 | 5.09 | 3,091,859 | 9.28 | -224,282 | -6.76 | 100,600,000 | 60,780,746 |
| 2026-02-27 | 5.46 | 3,316,141 | 9.42 | +80,578 | +2.49 | 100,600,000 | 60,780,746 |
| 2026-02-13 | 5.32 | 3,235,563 | 13.09 | -63,057 | -1.91 | 100,600,000 | 60,780,746 |
| 2026-01-30 | 5.43 | 3,298,620 | 10.69 | +47,806 | +1.47 | 100,600,000 | 60,780,746 |
| 2026-01-15 | 5.35 | 3,250,814 | 6.27 | -96,113 | -2.87 | 100,600,000 | 60,780,746 |
| 2025-12-31 | 5.51 | 3,346,927 | 10.55 | -246,300 | -6.85 | 100,600,000 | 60,780,746 |
| 2025-12-15 | 5.91 | 3,593,227 | 1.63 | +1,745,063 | +94.42 | 100,600,000 | 60,780,746 |
| 2025-11-28 | 3.04 | 1,848,164 | 8.02 | +229,655 | +14.19 | 100,600,000 | 60,780,746 |
| 2025-11-14 | 2.65 | 1,618,509 | 6.99 | +5,569 | +0.35 | 100,600,000 | 61,063,030 |
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.