Iron Mountain Inc. short interest
Short interest in Iron Mountain Inc. was 6.5 million shares at the 31 August 2026 settlement, down 9.0% on the previous settlement, with 4.75 days to cover at an average daily volume of 1.4 million shares, as reported to FINRA.
| Settlement | Shares short | Change | Average daily volume | Days to cover |
|---|---|---|---|---|
| 31 August 2026 | 6,463,287 | -9.0% | 1,359,386 | 4.75 |
| 14 August 2026 | 7,103,268 | -15.2% | 1,821,231 | 3.90 |
| 31 July 2026 | 8,378,595 | +1.5% | 1,872,859 | 4.47 |
| 15 July 2026 | 8,256,613 | +10.7% | 2,418,442 | 3.41 |
| 30 June 2026 | 7,458,588 | -7.6% | 1,850,528 | 4.03 |
| 15 June 2026 | 8,070,353 | +10.5% | 1,298,291 | 6.22 |
| 29 May 2026 | 7,300,638 | -1.0% | 1,218,441 | 5.99 |
| 15 May 2026 | 7,372,454 | -3.5% | 1,689,867 | 4.36 |
| 30 April 2026 | 7,641,375 | -4.7% | 1,965,111 | 3.89 |
| 15 April 2026 | 8,021,715 | -2.0% | 1,156,167 | 6.94 |
| 31 March 2026 | 8,188,431 | -3.3% | 1,542,072 | 5.31 |
| 13 March 2026 | 8,465,576 | +11.6% | 1,373,079 | 6.17 |
FINRA publishes consolidated short interest twice a month, about ten days after each settlement. Days to cover is shares short over average daily volume. Short interest as a share of the float is not shown: the float is not in the public record.
Source
FINRA equity short interest data, the public dataset.
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