4.71 USD
AT CLOSE
UPB Stock After Hours
Upstream Bio, Inc. Common Stock
UPBNASDAQ • USD
Market: OPEN
After-hours trading runs 4:00 PM – 8:00 PM ET.
UPB After Hours Chart
UPB After Hours News
Gap Analytics — 5-year history, 5% minimum gap
No qualifying gap events found for UPB.
Frequently Asked Questions
What is UPB's after-hours price?
Upstream Bio (UPB) has no recorded after-hours trades for the latest session. Its regular-session close was $4.71. After-hours quotes appear here when the stock trades between 4:00 PM and 8:00 PM ET.
When does UPB after-hours trading start and end?
After-hours trading in UPB on the NASDAQ runs from 4:00 PM to 8:00 PM ET on trading days, immediately after the regular session closes. Not every broker offers the full window, and liquidity thins sharply after about 6:30 PM ET.