analyst
UP
NASDAQ · UPB
Upstream Bio, Inc.
Healthcare · Biotechnology
$5.31
Down-$0.03 (-0.65%)
Updated Sep 18, 2026, 4:45 PM
SID Score
2.9/10
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
- $5.27 – $10.67
- Volume
- 533.87K
- Avg. volume
- 437.05K
Price performance
UPB price history
1M range · 20 trading sessions · Daily adjusted prices
UPB closed at $5.31 after 20 trading sessions, down 22.48% for the selected period.
- Last close
- $5.31
- Period change
- -22.48%
- Period low
- $5.31
- Period high
- $7.18
Daily close
View OHLC price history
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Sep 17, 2026 | $5.44 | $5.48 | $5.235 | $5.31 | 533.87K |
| Sep 16, 2026 | $5.49 | $5.54 | $5.27 | $5.33 | 497.24K |
| Sep 15, 2026 | $5.81 | $5.81 | $5.455 | $5.48 | 421.27K |
| Sep 14, 2026 | $5.75 | $5.87 | $5.70 | $5.81 | 491.02K |
| Sep 11, 2026 | $5.84 | $5.84 | $5.65 | $5.73 | 501.31K |
| 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 |
Latest UPB news
The latest Smart Investors Daily articles mentioning UPB.
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