UPB short interest
Upstream Bio Inc. · Healthcare · Biotechnology · settlement date 2026-09-30
| Shares short | 4,514,865 |
|---|---|
| Change vs prior report | 24,141 (+0.5%) |
| Change over six months | +31.4% |
| Days to cover | 7.68 (sector: 3.78) |
| Average daily volume | 587,966 |
| Rank in Healthcare | #206 of 922 by days to cover |
UPB short interest, last 12 months
| Settlement | Shares short | Change | Days to cover | Avg daily volume |
|---|---|---|---|---|
| 2026-09-30 | 4,514,865 | +0.5% | 7.68 | 587,966 |
| 2026-09-15 | 4,490,724 | +9.7% | 6.84 | 656,192 |
| 2026-08-31 | 4,095,011 | +1.9% | 7.45 | 549,503 |
| 2026-08-14 | 4,016,614 | +10.1% | 5.64 | 712,393 |
| 2026-07-31 | 3,648,558 | +0.8% | 7.49 | 486,961 |
| 2026-07-15 | 3,618,151 | -11.9% | 8.18 | 442,098 |
| 2026-06-30 | 4,105,630 | +5.3% | 5.72 | 718,338 |
| 2026-06-15 | 3,898,229 | +7.1% | 5.48 | 711,476 |
| 2026-05-29 | 3,640,867 | +7.2% | 6.81 | 534,404 |
| 2026-05-15 | 3,397,759 | +5.4% | 6.69 | 507,812 |
| 2026-04-30 | 3,223,622 | +6.6% | 5.71 | 564,193 |
| 2026-04-15 | 3,022,894 | -12.0% | 5.24 | 576,870 |
| 2026-03-31 | 3,435,261 | -27.7% | 3.46 | 991,750 |
| 2026-03-13 | 4,752,354 | +16.3% | 4.44 | 1,071,464 |
| 2026-02-27 | 4,086,377 | +15.8% | 1.83 | 2,232,151 |
| 2026-02-13 | 3,529,797 | +10.9% | 1.52 | 2,319,852 |
| 2026-01-30 | 3,183,884 | -7.8% | 5.54 | 574,390 |
| 2026-01-15 | 3,451,544 | -1.0% | 5.29 | 652,307 |
| 2025-12-31 | 3,486,600 | +16.9% | 5.75 | 606,049 |
| 2025-12-15 | 2,983,568 | +7.6% | 5.58 | 534,387 |
| 2025-11-28 | 2,773,635 | -7.4% | 5.12 | 541,286 |
| 2025-11-14 | 2,994,056 | +2.2% | 7.81 | 383,301 |
| 2025-10-31 | 2,929,476 | -12.2% | 7.88 | 371,545 |
| 2025-10-15 | 3,336,913 | -6.4% | 10.27 | 324,798 |
| 2025-09-30 | 3,564,217 | +18.4% | 6.44 | 553,826 |
import finzdata as yf
yf.Ticker("UPB").short_interest # every report since 2017
yf.Client().short_interest(["UPB"], start="2018-01-01")Healthcare short interest · UPB price history · Who owns UPB · All short interest