Stock overview
Upstream Bio Inc - US
Explore the company, reported ownership, price history, and available source evidence.
Upstream Bio Inc (UPB) is a healthcare or biotechnology equity security tracked from 13F filings.
- Last close
- $5.36
- · UPB
- Tracked holders
- 1 fund
- Latest available 13F per fund
UPB · USD
Price
$5.36
-$16.64
(-75.64%)
over selected range
Close · Sep 25, 2026
Market closed
490 stored daily closes
$5.36
Sep 25, 2026
- Range low
- $5.17
- Range high
- $32.60
- Observations
- 490
- Session date
- Sep 25, 2026
Oct 11, 2024–Sep 25, 2026. Regular market hours only. Historical prices are unadjusted; splits and other corporate actions can affect comparisons.
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Official-source analysis
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