Upstream Bio, Inc. (UPB)
NASDAQ: UPB · Real-Time Price · USD
5.04
0.00 (0.00%)
Oct 2, 2026, 4:00 PM EDT - Market closed
Upstream Bio Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 2, 2026 | 5.12 | 5.21 | 4.86 | 5.04 | 5.04 | - | 956,519 |
| Oct 1, 2026 | 5.25 | 5.35 | 4.98 | 5.04 | 5.04 | -4.36% | 832,374 |
| Sep 30, 2026 | 5.23 | 5.46 | 5.15 | 5.27 | 5.27 | 1.54% | 851,221 |
| Sep 29, 2026 | 5.28 | 5.31 | 4.99 | 5.19 | 5.19 | -2.08% | 784,211 |
| Sep 28, 2026 | 5.34 | 5.39 | 5.12 | 5.30 | 5.30 | -1.12% | 615,402 |
| Sep 25, 2026 | 5.20 | 5.39 | 5.07 | 5.36 | 5.36 | 3.68% | 429,212 |
| Sep 24, 2026 | 5.19 | 5.20 | 5.05 | 5.17 | 5.17 | -0.39% | 566,581 |
| Sep 23, 2026 | 5.48 | 5.49 | 4.99 | 5.19 | 5.19 | -5.46% | 552,994 |
| Sep 22, 2026 | 5.44 | 5.56 | 5.38 | 5.49 | 5.49 | 2.33% | 360,533 |
| Sep 21, 2026 | 5.42 | 5.44 | 5.27 | 5.37 | 5.37 | 0.47% | 364,035 |
| Sep 18, 2026 | 5.32 | 5.41 | 5.21 | 5.34 | 5.34 | 0.56% | 1,000,981 |
| Sep 17, 2026 | 5.44 | 5.48 | 5.24 | 5.31 | 5.31 | -0.38% | 533,871 |
| Sep 16, 2026 | 5.49 | 5.54 | 5.27 | 5.33 | 5.33 | -2.74% | 497,239 |
| Sep 15, 2026 | 5.81 | 5.81 | 5.46 | 5.48 | 5.48 | -5.68% | 421,265 |
| Sep 14, 2026 | 5.75 | 5.87 | 5.70 | 5.81 | 5.81 | 1.40% | 491,023 |
| Sep 11, 2026 | 5.84 | 5.84 | 5.65 | 5.73 | 5.73 | -0.35% | 501,306 |
| Sep 10, 2026 | 5.86 | 5.86 | 5.67 | 5.75 | 5.75 | -3.52% | 562,410 |
| Sep 9, 2026 | 6.14 | 6.20 | 5.77 | 5.96 | 5.96 | -3.72% | 726,236 |
| Sep 8, 2026 | 6.01 | 6.21 | 5.77 | 6.19 | 6.19 | 3.00% | 952,239 |
| Sep 4, 2026 | 6.00 | 6.23 | 5.97 | 6.01 | 6.01 | -1.15% | 643,266 |
| Sep 3, 2026 | 6.49 | 6.49 | 5.77 | 6.08 | 6.08 | -6.17% | 1,351,772 |
| Sep 2, 2026 | 6.62 | 6.98 | 6.41 | 6.48 | 6.48 | -1.07% | 515,755 |
| Sep 1, 2026 | 6.58 | 6.72 | 6.50 | 6.55 | 6.55 | -1.06% | 476,486 |
| Aug 31, 2026 | 6.64 | 6.77 | 6.44 | 6.62 | 6.62 | -1.05% | 895,008 |
| Aug 28, 2026 | 6.71 | 6.79 | 6.60 | 6.69 | 6.69 | -1.47% | 445,476 |
| Aug 27, 2026 | 7.11 | 7.14 | 6.78 | 6.79 | 6.79 | -4.77% | 335,062 |
| Aug 26, 2026 | 7.18 | 7.31 | 6.90 | 7.13 | 7.13 | -0.70% | 432,931 |
| Aug 25, 2026 | 6.68 | 7.18 | 6.55 | 7.18 | 7.18 | 8.62% | 554,420 |
| Aug 24, 2026 | 7.00 | 7.11 | 6.46 | 6.61 | 6.61 | -5.16% | 538,545 |
| Aug 21, 2026 | 6.91 | 7.01 | 6.85 | 6.97 | 6.97 | 1.75% | 434,241 |
| Aug 20, 2026 | 7.48 | 7.56 | 6.75 | 6.85 | 6.85 | -8.85% | 592,938 |
| Aug 19, 2026 | 7.04 | 7.53 | 6.91 | 7.52 | 7.52 | 9.71% | 574,178 |
| Aug 18, 2026 | 7.28 | 7.44 | 6.73 | 6.85 | 6.85 | -4.06% | 461,779 |
| Aug 17, 2026 | 7.02 | 7.19 | 6.86 | 7.14 | 7.14 | 0.99% | 852,441 |
| Aug 14, 2026 | 6.95 | 7.14 | 6.80 | 7.07 | 7.07 | 2.32% | 688,249 |
| Aug 13, 2026 | 7.02 | 7.04 | 6.87 | 6.91 | 6.91 | - | 378,835 |
| Aug 12, 2026 | 7.00 | 7.25 | 6.84 | 6.91 | 6.91 | -2.54% | 635,221 |
| Aug 11, 2026 | 7.48 | 7.70 | 7.01 | 7.09 | 7.09 | -4.70% | 628,055 |
| Aug 10, 2026 | 7.32 | 7.62 | 7.20 | 7.44 | 7.44 | 2.62% | 869,591 |
| Aug 7, 2026 | 6.94 | 7.26 | 6.89 | 7.25 | 7.25 | 5.53% | 621,845 |
| Aug 6, 2026 | 6.75 | 7.17 | 6.66 | 6.87 | 6.87 | 1.93% | 427,171 |
| Aug 5, 2026 | 6.77 | 6.88 | 6.58 | 6.74 | 6.74 | -0.74% | 917,311 |
| Aug 4, 2026 | 6.40 | 6.92 | 6.40 | 6.79 | 6.79 | 5.76% | 1,362,497 |
| Aug 3, 2026 | 6.31 | 6.43 | 6.18 | 6.42 | 6.42 | 1.74% | 774,290 |
| Jul 31, 2026 | 6.58 | 6.69 | 6.29 | 6.31 | 6.31 | -3.96% | 297,714 |
| Jul 30, 2026 | 6.35 | 6.67 | 6.29 | 6.57 | 6.57 | 2.50% | 320,722 |
| Jul 29, 2026 | 6.39 | 6.48 | 6.21 | 6.41 | 6.41 | 0.16% | 702,778 |
| Jul 28, 2026 | 6.40 | 6.54 | 6.09 | 6.40 | 6.40 | - | 433,233 |
| Jul 27, 2026 | 6.47 | 6.60 | 6.26 | 6.40 | 6.40 | -0.16% | 459,477 |
| Jul 24, 2026 | 6.40 | 6.61 | 6.16 | 6.41 | 6.41 | 0.16% | 626,431 |