IMSR Short Interest (May 29, 2026 Update)
Short interest for IMSR was 4.8M as of May 29, 2026, +17.0% from the prior report.
This page tracks IMSR short interest over time, including historical values, changes between reports, and days to cover.
Terrestrial Energy Inc. Common | IMSR | Nasdaq | Latest report: May 29, 2026
At the latest settlement date of May 29, 2026, Terrestrial Energy Inc. Common (IMSR) showed reported short interest of 4,779,175 shares. That compared with 4,083,931 shares in the prior report, a change of 695.2K shares, or +17.0%. The latest reported days to cover was 1.39, based on average daily volume of 3.4M.
The historical data currently tracked for IMSR includes 15 reported entries from October 31, 2025 to May 29, 2026. Over that span, reported short interest has ranged from 1.2M to 4.8M shares.
Extreme edge-case readings may reflect unusually low reported average volume.
| Settlement Date | Short Interest | Prior Short Interest | Change Shares | Change % | Average Daily Volume | Days to Cover |
|---|---|---|---|---|---|---|
| May 29, 2026 | 4,779,175 | 4,083,931 | 695.2K | +17.0% | 3.4M | 1.39 |
| May 15, 2026 | 4,083,931 | 3,443,602 | 640.3K | +18.6% | 3.4M | 1.19 |
| April 30, 2026 | 3,443,602 | 3,276,068 | 167.5K | +5.1% | 3.1M | 1.1 |
| April 15, 2026 | 3,276,068 | 3,255,139 | 20.9K | +0.6% | 1.5M | 2.16 |
| March 31, 2026 | 3,255,139 | 3,296,337 | -41.2K | -1.2% | 1.8M | 1.77 |
| March 13, 2026 | 3,296,337 | 3,686,500 | -390.2K | -10.6% | 1.2M | 2.81 |
| February 27, 2026 | 3,686,500 | 3,697,779 | -11.3K | -0.3% | 1.4M | 2.71 |
| February 13, 2026 | 3,697,779 | 3,089,469 | 608.3K | +19.7% | 2.0M | 1.83 |
| January 30, 2026 | 3,089,469 | 3,770,596 | -681.1K | -18.1% | 4.5M | 1 |
| January 15, 2026 | 3,770,596 | 3,024,640 | 746.0K | +24.7% | 5.8M | 1 |
| December 31, 2025 | 3,024,640 | 1,611,109 | 1.4M | +87.7% | 2.0M | 1.53 |
| December 15, 2025 | 1,611,109 | 1,224,234 | 386.9K | +31.6% | 1.5M | 1.08 |
| November 28, 2025 | 1,224,234 | 1,906,165 | -681.9K | -35.8% | 2.0M | 1 |
| November 14, 2025 | 1,906,165 | 2,558,429 | -652.3K | -25.5% | 1.8M | 1.07 |
| October 31, 2025 | 2,558,429 | 1,212,762 | 1.3M | +111.0% | 3.5M | 1 |