Terrestrial Energy Inc. Common | IMSR | Nasdaq | Latest report: February 27, 2026
The latest reported short interest for Terrestrial Energy Inc. Common (IMSR) was 3,686,500 shares as of February 27, 2026. In the prior report, the figure was 3,697,779 shares. That put the latest change at -11.3K shares, or -0.3%, with days to cover at 2.71 based on reported average daily volume of 1.4M.
The historical data currently tracked for IMSR includes 9 reported entries from October 31, 2025 to February 27, 2026. During that span, reported short interest ranged between 1.2M and 3.8M 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 |
|---|---|---|---|---|---|---|
| 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 |