stockNASDAQ: UPB • 28 Days Updates
Upstream Bio Inc. (UPB)
Showing Closing Date Range from Sep 11 to Oct 9, 2026.
Investor Relations:upstreambio.com
Price & Performance Trajectory
Upstream Bio Inc.NASDAQ: UPB
Latest Close
$4.55
28 Days Updates Trajectory
Showing Closing Date Range from Sep 11 to Oct 9, 2026.Loading trajectory chart...
Click metric scorecards below to toggle price, return %, range & volume curvesUPB session performance
✓ Latest Close USD
$4.55
Latest session close
$-1.18vs period start
Period Return % % GAIN
-20.59%
Net period trajectory
Cumulative ReturnNormalized
High / Low Range SPREAD
$5.87 / $4.37
Period range envelope
$1.50channel spread
Total Volume SHARES
12.74M
Period turnover
Avg: 749.4K/dLiquidity
Historical Session Ledger
Daily open, high, low, and close prices with volume and period returns.
Historical Quotes & Breakdown(17 dates)
| Date | Close (USD) | Return % | High | Low | Volume |
|---|---|---|---|---|---|
| Oct 08, 2026 | $4.55 | -1.30% | $4.65 | $4.37 | 2.86M |
| Oct 07, 2026 | $4.61 | +0.44% | $4.72 | $4.50 | 908.4K |
| Oct 06, 2026 | $4.59 | -5.36% | $4.87 | $4.53 | 1.06M |
| Oct 05, 2026 | $4.85 | -3.77% | $5.10 | $4.67 | 1.01M |
| Oct 02, 2026 | $5.04 | +0.00% | $5.21 | $4.87 | 956.5K |
| Sep 28, 2026 | $5.34 | -0.37% | $5.39 | $5.12 | 227.0K |
| Sep 25, 2026 | $5.36 | +3.68% | $5.39 | $5.07 | 429.2K |
| Sep 24, 2026 | $5.17 | -0.39% | $5.20 | $5.05 | 566.6K |
| Sep 23, 2026 | $5.19 | -5.46% | $5.49 | $4.99 | 553.0K |
| Sep 22, 2026 | $5.49 | +2.33% | $5.56 | $5.38 | 360.4K |
| Sep 21, 2026 | $5.37 | +0.47% | $5.44 | $5.27 | 364.0K |
| Sep 18, 2026 | $5.34 | +0.57% | $5.41 | $5.21 | 1.00M |
| Sep 17, 2026 | $5.31 | -0.38% | $5.48 | $5.24 | 533.9K |
| Sep 16, 2026 | $5.33 | -2.74% | $5.54 | $5.27 | 497.2K |
| Sep 15, 2026 | $5.48 | -5.68% | $5.81 | $5.46 | 421.3K |
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