stockNASDAQ: UPB • Today's Updates
Upstream Bio Inc. (UPB) Today Close
Showing Closing Date Range from Oct 7 to Oct 8, 2026.
Investor Relations:upstreambio.com
NASDAQ MarketOfficial Close Wall Street: 9:57 PM ET
Today's Session Settled & Finalized
Official market closing rate settled for Oct 08, 2026. Next session begins at 9:30 AM ET.
Multi-Day Trends:View 28-Day Chart
Started At
Market Open Opening price at session start (9:30 AM ET)
$4.53
Opening Gap$-0.08(-1.74%)
Closed At
OFFICIAL CLOSESettled close for Oct 08, 2026
$4.55
Session DateOct 08, 2026
Lost Today
LOSS Net movement vs previous close
$-0.06 (-1.30%)
Intraday (from open)+$0.02 (+0.44%)
Day's High & Low Range
Session Low
$4.37
Session High
$4.65
Low ($4.37)Closed At ($4.55)High ($4.65)
Trading Activity & Liquidity
Shares Traded
2.86M
2,857,120 shares
Dollar Volume
$13.00M
Close × Volume traded
Session Turnover$13.00M USD
Session Statistics Breakdown
Key opening, settlement, and trading metrics for Upstream Bio Inc. (UPB).
Oct 08, 2026
Started At (Open)
$4.53
Previous Close
$4.61
Session High
$4.65
Session Low
$4.37
Closed At
$4.55
Gained / Lost ($)
$-0.06
Gained / Lost (%)
-1.30%
Day's Spread
$0.28