UPB
Upstream Bio, Inc.Company with tickers: UPB
CIK
2022626
CUSIP
91678A107
Shares Outstanding
54,419,986
Price
Holdings
Short Volume
Short Interest
Fails to Deliver
SEC Filings
Earnings Calls
Insider Trading
Congress Trades
Short Interest History
| Settlement Date | Current Position | Previous Position | Change | Days to Cover |
|---|---|---|---|---|
| 2026-03-13 | 4,752,354 | 4,086,377 | +665,977 | 4.44 |
| 2026-02-27 | 4,086,377 | 3,529,797 | +556,580 | 1.83 |
| 2026-02-13 | 3,529,797 | 3,183,884 | +345,913 | 1.52 |
| 2026-01-30 | 3,183,884 | 3,451,544 | -267,660 | 5.54 |
| 2026-01-15 | 3,451,544 | 3,486,600 | -35,056 | 5.29 |
| 2025-12-31 | 3,486,600 | 2,983,568 | +503,032 | 5.75 |
| 2025-12-15 | 2,983,568 | 2,773,635 | +209,933 | 5.58 |
| 2025-11-28 | 2,773,635 | 2,994,056 | -220,421 | 5.12 |
| 2025-11-14 | 2,994,056 | 2,929,476 | +64,580 | 7.81 |
| 2025-10-31 | 2,929,476 | 3,336,913 | -407,437 | 7.88 |
| 2025-10-15 | 3,336,913 | 3,564,217 | -227,304 | 10.27 |
| 2025-09-30 | 3,564,217 | 3,011,653 | +552,564 | 6.44 |
| 2025-09-15 | 3,011,653 | 3,097,969 | -86,316 | 4.54 |
| 2025-08-29 | 3,097,969 | 3,160,080 | -62,111 | 8.78 |
| 2025-08-15 | 3,160,080 | 3,080,800 | +79,280 | 6.43 |
| 2025-07-31 | 3,080,800 | 3,781,146 | -700,346 | 5.75 |
| 2025-07-15 | 3,781,146 | 4,109,973 | -328,827 | 14.13 |
| 2025-06-30 | 4,109,973 | 3,610,360 | +499,613 | 5.72 |
| 2025-06-13 | 3,610,360 | 3,685,383 | -75,023 | 10.06 |
| 2025-05-30 | 3,685,383 | 3,746,059 | -60,676 | 9.55 |
| 2025-05-15 | 3,746,059 | 3,940,057 | -193,998 | 10.32 |
| 2025-04-30 | 3,940,057 | 4,067,418 | -127,361 | 13.28 |
| 2025-04-15 | 4,067,418 | 3,895,476 | +171,942 | 13.56 |
| 2025-03-31 | 3,895,476 | 3,712,999 | +182,477 | 15.52 |