Upstream Bio Inc. (UPB)
Showing Closing Date Range from Oct 27, 2025 to Oct 27, 2026 compared to Oct 26, 2024 to Oct 26, 2025.
Compare Last 12 Months with Previous Period
Investor Relations:upstreambio.com
Current Period Close
$2.79
Oct 27, 2025 - Oct 27, 2026
Previous Period Close
$21.86
Oct 26, 2024 - Oct 26, 2025
Net Comparison Delta
$-19.07 (-87.24%)
Relative performance vs prior benchmark
Historical Quotes & Breakdown(249 dates)
| Current Date | Current Close | Previous Date | Previous Close | Delta (%) |
|---|---|---|---|---|
| Oct 27, 2026 | $2.79 | Oct 24, 2025 | $21.86 | -87.24% |
| Oct 26, 2026 | $2.75 | Oct 23, 2025 | $21.13 | -86.99% |
| Oct 23, 2026 | $2.74 | Oct 22, 2025 | $22.15 | -87.63% |
| Oct 22, 2026 | $2.99 | Oct 21, 2025 | $22.33 | -86.61% |
| Oct 21, 2026 | $2.80 | Oct 20, 2025 | $23.05 | -87.85% |
| Oct 20, 2026 | $2.82 | Oct 17, 2025 | $20.97 | -86.55% |
| Oct 19, 2026 | $2.80 | Oct 16, 2025 | $22.28 | -87.43% |
| Oct 16, 2026 | $2.76 | Oct 15, 2025 | $21.69 | -87.28% |
| Oct 15, 2026 | $3.37 | Oct 14, 2025 | $19.98 | -83.13% |
| Oct 14, 2026 | $3.42 | Oct 13, 2025 | $20.08 | -82.97% |
| Oct 13, 2026 | $3.55 | Oct 10, 2025 | $19.62 | -81.91% |
| Oct 12, 2026 | $4.17 | Oct 09, 2025 | $19.79 | -78.93% |
| Oct 09, 2026 | $4.70 | Oct 08, 2025 | $18.92 | -75.16% |
| Oct 08, 2026 | $4.55 | Oct 07, 2025 | $18.67 | -75.63% |
| Oct 07, 2026 | $4.61 | Oct 06, 2025 | $18.97 | -75.70% |
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