IRM
Iron Mountain Inc.
stockNYSE
Market OpenNov 13, 2026 2:00:26 PM EST
112.67USD-1.671%(-1.91)593,025
As of 2026-10-30, there were 7,042,041 shares short with a short interest of 2.39%.
IRM Short Interest - Official
IRM Short Position Change - Official
IRM 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 | 2.39 | 7,042,041 | 5.56 | -104,274 | -1.46 | 297,702,812 | 294,919,291 |
| 2026-10-15 | 2.42 | 7,146,315 | 5.13 | +146,626 | +2.09 | 297,702,812 | 294,907,383 |
| 2026-09-30 | 2.38 | 6,999,689 | 4.24 | -933,025 | -11.76 | 297,702,812 | 294,692,246 |
| 2026-09-15 | 2.69 | 7,932,714 | 4.69 | +1,469,427 | +22.73 | 297,702,812 | 294,692,246 |
| 2026-08-31 | 2.19 | 6,463,287 | 4.75 | -639,981 | -9.01 | 297,702,812 | 294,692,246 |
| 2026-08-14 | 2.41 | 7,103,268 | 3.90 | -1,275,327 | -15.22 | 297,702,812 | 294,692,246 |
| 2026-07-31 | 2.84 | 8,378,595 | 4.47 | +121,982 | +1.48 | 297,524,681 | 294,692,246 |
| 2026-07-15 | 2.80 | 8,256,613 | 3.41 | +798,025 | +10.70 | 297,524,681 | 294,692,246 |
| 2026-06-30 | 2.53 | 7,458,588 | 4.03 | -611,765 | -7.58 | 297,524,681 | 294,689,271 |
| 2026-06-15 | 2.74 | 8,070,353 | 6.22 | +697,899 | +9.47 | 297,524,681 | 294,689,271 |
| 2026-05-15 | 2.50 | 7,372,454 | 4.36 | -268,921 | -3.52 | 297,524,681 | 294,635,716 |
| 2026-04-30 | 2.61 | 7,641,375 | 3.89 | -380,340 | -4.74 | 297,478,817 | 292,994,215 |
| 2026-04-15 | 2.74 | 8,021,715 | 6.94 | -166,716 | -2.04 | 297,478,817 | 292,994,215 |
| 2026-03-31 | 2.79 | 8,188,431 | 5.31 | -277,145 | -3.27 | 297,478,817 | 292,994,215 |
| 2026-03-13 | 2.89 | 8,465,576 | 6.17 | +880,872 | +11.61 | 295,835,206 | 292,994,215 |
| 2026-02-27 | 2.59 | 7,584,704 | 3.71 | -236,748 | -3.03 | 295,835,206 | 292,994,215 |
| 2026-02-13 | 2.67 | 7,821,452 | 3.01 | -1,336,491 | -14.59 | 295,835,206 | 292,994,215 |
| 2026-01-30 | 3.13 | 9,157,943 | 4.80 | +42,086 | +0.46 | 295,589,491 | 292,994,215 |
| 2026-01-15 | 3.11 | 9,115,857 | 4.49 | -521,897 | -5.42 | 295,589,491 | 292,994,215 |
| 2025-12-31 | 3.29 | 9,637,754 | 4.55 | -1,268,490 | -11.63 | 295,589,491 | 292,994,215 |
| 2025-12-15 | 3.72 | 10,906,244 | 5.64 | +1,004,536 | +10.15 | 295,589,491 | 292,994,215 |
| 2025-11-28 | 3.38 | 9,901,708 | 3.16 | -12,623 | -0.13 | 295,589,491 | 292,988,303 |
| 2025-11-14 | 3.38 | 9,914,331 | 4.40 | +2,240,838 | +29.20 | 295,589,491 | 292,943,965 |
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.