First Interstate BancSystem, In (FIBK) — Short Interest History
The most recent FINRA short interest report for FIBK (settlement date April 30, 2026) shows 10,898,439 shares sold short , a change of 19.46% from the prior report .
Days to cover: 8.13.
Short interest history for FIBK
| Settlement date | Short interest | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| Apr 30, 2026 | 10,898,439 | 19.46% | 1,340,291 | 8.13 |
| Apr 15, 2026 | 9,123,128 | 6.11% | 1,259,278 | 7.24 |
| Mar 31, 2026 | 8,597,748 | 13.23% | 1,328,378 | 6.47 |
| Mar 13, 2026 | 7,593,272 | -1.43% | 1,154,813 | 6.58 |
| Feb 27, 2026 | 7,703,135 | 12.30% | 819,388 | 9.40 |
| Feb 13, 2026 | 6,859,194 | 13.57% | 1,115,905 | 6.15 |
| Jan 30, 2026 | 6,039,514 | -8.93% | 1,159,508 | 5.21 |
| Jan 15, 2026 | 6,631,852 | -1.18% | 1,066,136 | 6.22 |
| Dec 31, 2025 | 6,710,941 | -17.64% | 1,042,305 | 6.44 |
| Dec 15, 2025 | 8,147,898 | 58.10% | 2,672,488 | 3.05 |
| Nov 28, 2025 | 5,153,664 | 2.97% | 1,445,384 | 3.57 |
| Nov 14, 2025 | 5,005,177 | 4.17% | 794,191 | 6.30 |
| Oct 31, 2025 | 4,804,782 | -2.63% | 953,449 | 5.04 |
| Oct 15, 2025 | 4,934,413 | -6.02% | 761,012 | 6.48 |
| Sep 30, 2025 | 5,250,751 | 12.00% | 1,119,081 | 4.69 |
| Sep 15, 2025 | 4,688,064 | 46.30% | 900,366 | 5.21 |
| Aug 29, 2025 | 3,204,392 | 6.15% | 638,844 | 5.02 |
| Aug 15, 2025 | 3,018,839 | 3.76% | 913,414 | 3.31 |
| Jul 31, 2025 | 2,909,487 | -18.90% | 791,304 | 3.68 |
| Jul 15, 2025 | 3,587,571 | -11.41% | 751,534 | 4.77 |
| Jun 30, 2025 | 4,049,750 | 0.74% | 1,338,096 | 3.03 |
| Jun 13, 2025 | 4,019,856 | 13.35% | 861,620 | 4.67 |
| May 30, 2025 | 3,546,260 | 23.66% | 867,260 | 4.09 |
| May 15, 2025 | 2,867,664 | -4.47% | 937,643 | 3.06 |
| Apr 30, 2025 | 3,001,721 | 0.43% | 930,746 | 3.23 |
Frequently asked questions
- What is short interest in FIBK?
- Short interest is the total number of FIBK shares currently sold short but not yet covered or closed out. FINRA publishes this data twice monthly.
- How is FIBK short interest calculated?
- Short interest is aggregated from member firm reports to FINRA. Every U.S. broker-dealer must report aggregate short positions in each security as of the 15th and last trading day of each month.
- What does a high short interest mean?
- Higher short interest can indicate bearish sentiment, but it also raises the potential for a short squeeze if positive news forces short sellers to cover their positions simultaneously. Compare short interest to float (short percent of float) for context.