ALKS
Alkermes Inc. plc
stockNASDAQ
Market OpenOct 5, 2026 1:26:17 PM EDT
42.67USD+2.204%(+0.92)965,122
42.62Bid42.66Ask0.04SpreadPre-marketOct 5, 2026 9:26:30 AM EDT
41.50USD-0.599%(-0.25)
As of 2026-09-15, there were 15,156,775 shares short with a short interest of 9.77%.
ALKS Short Interest - Official
Short Interest
ALKS Short Position Change - Official
Short Position Change
ALKS Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-09-15 | 9.77 | 15,156,775 | 10.70 | +439,371 | +2.99 | 167,763,272 | 155,139,086 |
| 2026-08-31 | 9.49 | 14,717,404 | 11.79 | -43,938 | -0.30 | 167,763,272 | 155,139,086 |
| 2026-08-14 | 9.51 | 14,761,342 | 10.19 | +354,431 | +2.46 | 167,763,272 | 155,139,086 |
| 2026-07-31 | 9.29 | 14,406,911 | 7.72 | -610,832 | -4.07 | 167,763,272 | 155,139,086 |
| 2026-07-15 | 9.75 | 15,017,743 | 9.11 | -2,447,201 | -14.01 | 166,675,807 | 154,083,450 |
| 2026-06-30 | 11.34 | 17,464,944 | 4.81 | -497,807 | -2.77 | 166,675,807 | 154,076,783 |
| 2026-06-15 | 11.66 | 17,962,751 | 9.46 | +607,525 | +3.50 | 166,675,807 | 154,075,116 |
| 2026-05-29 | 10.65 | 17,355,226 | 8.45 | -922,458 | -5.05 | 166,675,807 | 162,963,792 |
| 2026-05-15 | 11.17 | 18,277,684 | 7.55 | -1,482,751 | -7.50 | 166,675,807 | 163,610,495 |
| 2026-04-30 | 12.14 | 19,760,435 | 12.55 | +76,216 | +0.39 | 166,252,718 | 162,748,073 |
| 2026-04-15 | 12.09 | 19,684,219 | 8.17 | +670,801 | +3.53 | 166,252,718 | 162,748,073 |
| 2026-03-31 | 11.68 | 19,013,418 | 5.86 | -1,587,397 | -7.71 | 166,649,934 | 162,748,073 |
| 2026-03-13 | 12.66 | 20,600,815 | 9.43 | +2,404,589 | +13.21 | 166,649,934 | 162,748,073 |
| 2026-02-27 | 11.18 | 18,196,226 | 9.21 | +378,719 | +2.13 | 165,117,509 | 162,748,073 |
| 2026-02-13 | 10.95 | 17,817,507 | 11.70 | -1,179,142 | -6.21 | 165,117,509 | 162,748,073 |
| 2026-01-30 | 11.67 | 18,996,649 | 7.83 | -2,669,354 | -12.32 | 165,117,509 | 162,748,073 |
| 2026-01-15 | 13.31 | 21,666,003 | 10.45 | -177,841 | -0.81 | 165,117,509 | 162,748,073 |
| 2025-12-31 | 13.42 | 21,843,844 | 14.40 | +1,809,940 | +9.03 | 165,117,509 | 162,748,073 |
| 2025-12-15 | 12.31 | 20,033,904 | 11.59 | +1,204,183 | +6.40 | 165,117,509 | 162,748,073 |
| 2025-11-28 | 11.57 | 18,829,721 | 9.04 | +1,534,401 | +8.87 | 165,117,509 | 162,743,119 |
| 2025-11-14 | 10.65 | 17,295,320 | 4.75 | +1,398,370 | +8.80 | 165,117,509 | 162,464,071 |
| 2025-10-31 | 9.79 | 15,896,950 | 5.86 | +1,494,895 | +10.38 | 165,117,509 | 162,459,117 |
| 2025-10-15 | 8.87 | 14,402,055 | 8.44 | -812,360 | -5.34 | 165,077,979 | 162,415,271 |
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.