MBX
MBX Biosciences, Inc. Common Stock
stockNASDAQ
Market OpenOct 5, 2026 11:12:29 AM EDT
57.12USD-2.426%(-1.42)61,801
48.76Bid57.68Ask8.92SpreadAs of 2026-09-15, there were 4,129,859 shares short with a short interest of 19.95%.
MBX Short Interest - Official
Short Interest
MBX Short Position Change - Official
Short Position Change
MBX Short Interest - Official
| Settlement Date1 | Short Interest % | Short Position | Days to Cover2 | Short Position Change | Short Position Change % | Shares Out | Shares Float |
|---|---|---|---|---|---|---|---|
| 2026-09-15 | 19.95 | 4,129,859 | 11.44 | -25,713 | -0.62 | 48,160,096 | 20,700,621 |
| 2026-08-31 | 20.07 | 4,155,572 | 10.14 | -794,530 | -16.05 | 48,160,096 | 20,700,621 |
| 2026-08-14 | 23.91 | 4,950,102 | 11.18 | -238,460 | -4.60 | 48,160,096 | 20,700,621 |
| 2026-07-31 | 25.06 | 5,188,562 | 8.52 | -588,147 | -10.18 | 47,597,536 | 20,700,621 |
| 2026-07-15 | 39.54 | 5,776,709 | 6.21 | -118,631 | -2.01 | 47,597,536 | 14,609,972 |
| 2026-06-30 | 40.35 | 5,895,340 | 5.28 | +184,834 | +3.24 | 47,597,536 | 14,609,972 |
| 2026-06-15 | 39.09 | 5,710,506 | 5.95 | +1,425,893 | +33.28 | 47,597,536 | 14,609,972 |
| 2026-05-15 | 29.33 | 4,284,613 | 4.99 | +251,059 | +6.22 | 47,597,536 | 14,609,972 |
| 2026-04-30 | 27.61 | 4,033,554 | 9.58 | +247,012 | +6.52 | 47,570,485 | 14,609,972 |
| 2026-04-15 | 25.92 | 3,786,542 | 7.71 | +193,135 | +5.37 | 47,510,243 | 14,609,972 |
| 2026-03-31 | 24.60 | 3,593,407 | 7.97 | +609,682 | +20.43 | 47,510,243 | 14,609,972 |
| 2026-03-13 | 20.42 | 2,983,725 | 5.00 | +588,386 | +24.56 | 44,902,302 | 14,609,972 |
| 2026-02-27 | 16.40 | 2,395,339 | 4.50 | +192,517 | +8.74 | 44,902,302 | 14,609,972 |
| 2026-02-13 | 15.08 | 2,202,822 | 3.08 | +236,847 | +12.05 | 44,902,302 | 14,609,972 |
| 2026-01-30 | 13.46 | 1,965,975 | 3.07 | -341,849 | -14.81 | 44,902,302 | 14,609,972 |
| 2026-01-15 | 15.80 | 2,307,824 | 2.88 | -1,536,119 | -39.96 | 44,902,302 | 14,609,972 |
| 2025-12-31 | 26.31 | 3,843,943 | 4.41 | +232,038 | +6.42 | 44,902,302 | 14,609,972 |
| 2025-12-15 | 24.72 | 3,611,905 | 4.34 | -489,839 | -11.94 | 44,902,302 | 14,609,972 |
| 2025-11-28 | 28.07 | 4,101,744 | 6.78 | -527,638 | -11.40 | 44,902,302 | 14,609,972 |
| 2025-11-14 | 31.69 | 4,629,382 | 6.17 | +47,741 | +1.04 | 44,902,302 | 14,609,972 |
| 2025-10-31 | 31.36 | 4,581,641 | 4.76 | +672,100 | +17.19 | 44,715,498 | 14,609,972 |
| 2025-10-15 | 26.76 | 3,909,541 | 3.92 | +8,922 | +0.23 | 44,715,498 | 14,609,972 |
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.