analyst
UP
NASDAQ · UPB
Upstream Bio, Inc.
Healthcare · Biotechnology
$5.75
Down-$0.02 (-0.35%)
Updated Sep 11, 2026, 8:51 PM
SID Score
3.2/10
Composite research score
Smart Money
—
Institutional and insider signal
- Market cap
- 1.48B
- P/E ratio
- -14.14
- Dividend yield
- 0.00%
- 52-week range
- $5.67 – $10.67
- Volume
- 562.41K
- Avg. volume
- 437.05K
Price performance
UPB price history
1M range · 20 trading sessions · Daily adjusted prices
UPB closed at $5.75 after 20 trading sessions, down 16.79% for the selected period.
- Last close
- $5.75
- Period change
- -16.79%
- Period low
- $5.75
- Period high
- $7.52
Daily close
View OHLC price history
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Sep 10, 2026 | $5.86 | $5.86 | $5.67 | $5.75 | 562.41K |
| Sep 9, 2026 | $6.14 | $6.20 | $5.77 | $5.96 | 726.24K |
| Sep 8, 2026 | $6.01 | $6.21 | $5.77 | $6.19 | 952.24K |
| Sep 4, 2026 | $6.00 | $6.23 | $5.965 | $6.01 | 643.27K |
| Sep 3, 2026 | $6.49 | $6.49 | $5.77 | $6.08 | 1.35M |
| Sep 2, 2026 | $6.62 | $6.98 | $6.41 | $6.48 | 515.76K |
| Sep 1, 2026 | $6.58 | $6.72 | $6.50 | $6.55 | 476.49K |
| Aug 31, 2026 | $6.64 | $6.77 | $6.44 | $6.62 | 895.01K |
| Aug 28, 2026 | $6.71 | $6.79 | $6.60 | $6.69 | 445.48K |
| Aug 27, 2026 | $7.11 | $7.14 | $6.78 | $6.79 | 335.06K |
| Aug 26, 2026 | $7.18 | $7.31 | $6.90 | $7.13 | 432.93K |
| Aug 25, 2026 | $6.68 | $7.18 | $6.55 | $7.18 | 554.42K |
| Aug 24, 2026 | $7.00 | $7.11 | $6.46 | $6.61 | 538.55K |
| Aug 21, 2026 | $6.91 | $7.0062 | $6.85 | $6.97 | 434.24K |
| Aug 20, 2026 | $7.48 | $7.555 | $6.745 | $6.85 | 592.94K |
| Aug 19, 2026 | $7.04 | $7.53 | $6.91 | $7.515 | 574.18K |
| Aug 18, 2026 | $7.28 | $7.435 | $6.73 | $6.85 | 461.78K |
| Aug 17, 2026 | $7.02 | $7.19 | $6.86 | $7.14 | 852.44K |
| Aug 14, 2026 | $6.95 | $7.14 | $6.80 | $7.07 | 688.25K |
| Aug 13, 2026 | $7.02 | $7.04 | $6.87 | $6.91 | 378.84K |
Latest UPB news
The latest Smart Investors Daily articles mentioning UPB.
Stock researchMarket Activity · Institutional Ownership
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