Upstream Bio Inc (UPB)
$3.41 +4.28% Close Oct 30, 2026 Live
Upstream Bio stock today
Upstream Bio closed at $3.41 on October 30, 2026, up 4.28% on the day. Over the past year it returned -86.8% with dividends reinvested, against +12.4% for the S&P 500. Its market value is $186 million.
$10.00$20.00$30.00
NovJan 2026MarMayJulSep
| Period | UPB | S&P 500 (SPY) |
|---|---|---|
| 1 month | -35.3% | -0.9% |
| 3 months | -48.1% | +2.1% |
| Year to date | -87.4% | +11.7% |
| 1 year | -86.8% | +12.4% |
Key statistics
- Market value
- $186M
- Price / sales
- 58.9
- 52-week range
- $2.74 to $32.60
- Next report
- Nov 4, 2026 (estimated)
About Upstream Bio
Biotechnology company developing therapies for upstream biological processes and disease.
Sector: Health Care
More on Upstream Bio
- Financials: revenue, earnings and segmentsRevenue +20% in the year to Dec 2025
- Returns: what $1,000 became$1,000 one year ago is $132.32 today
No forecast, no recommendation. This page describes Upstream Bio Inc from published data; it is not advice to buy, sell or hold any security.
Figures as of the close on Oct 30, 2026 unless a row says otherwise. Prices are split adjusted; returns include dividends reinvested. Data may be delayed. See the disclaimer and how TrendArc works.