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Upstream Bio (UPB) Stock Chart & Stock Price History

Upstream Bio logo
$8.87 +0.08 (+0.91%)
As of 02:57 PM Eastern
This is a fair market value price provided by Massive. Learn more.

Upstream Bio Stock Price Performance

The Upstream Bio (UPB) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 1.03%, with a year-to-date return of -67.33%. In the past month, the stock has decreased 10.22%, reflecting recent market activity.

As of the latest close, Upstream Bio traded at $8.79 with a market cap of $478.35 million and volume of 568,770 shares.

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5 Day
Performance
-2.42%
1 Month
Performance
-10.22%
3 Month
Performance
+1.37%
Year-To-Date
Performance
-67.33%
1 Year
Performance
+1.03%

UPB Stock Chart for Friday, May, 15, 2026

Upstream Bio Stock Price History

DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization
05/14/2026$9.36$8.79
-6.09%
$9.52$8.51568,770 shs$478.35 million
05/13/2026$8.95$9.36
+4.58%
$9.47$8.80815,501 shs$509.37 million
05/12/2026$9.11$8.95
-1.76%
$9.14$8.83467,501 shs$487.06 million
05/11/2026$9.09$9.11
+0.22%
$9.60$9.05618,883 shs$495.77 million
05/08/2026$8.98$9.09
+1.22%
$9.35$8.80456,043 shs$488.96 million
05/07/2026$9.19$8.98
-2.29%
$9.14$8.69272,836 shs$488.69 million
05/06/2026$9.12$9.19
+0.77%
$9.29$8.98409,194 shs$500.12 million
05/05/2026N/A$9.12$9.50$8.88262,659 shs$496.31 million
04/30/2026$9.19$9.18
-0.11%
$9.30$9.06394,953 shs$499.58 million
04/29/2026$9.51$9.19
-3.36%
$9.37$8.97415,824 shs$500.12 million
04/28/2026$9.29$9.51
+2.37%
$9.65$9.28474,584 shs$517.53 million
04/27/2026$9.30$9.29
-0.11%
$9.64$9.15664,739 shs$505.56 million
04/24/2026$9.60$9.30
-3.12%
$9.63$9.21558,825 shs$506.11 million
04/23/2026$9.64$9.60
-0.41%
$9.72$9.38427,994 shs$522.43 million
04/22/2026$9.26$9.64
+4.10%
$9.71$9.06624,770 shs$524.61 million
04/21/2026$9.99$9.26
-7.31%
$10.05$9.22526,315 shs$503.93 million
04/20/2026$9.99$9.99$10.09$9.79387,902 shs$543.66 million
04/17/2026$10.10$9.99
-1.09%
$10.64$9.84661,401 shs$543.66 million
04/16/2026$9.88$10.10
+2.23%
$10.15$9.681.15 million shs$549.64 million
04/15/2026$10.34$9.88
-4.45%
$10.52$9.79552,120 shs$537.67 million
04/14/2026$10.23$10.34
+1.08%
$10.45$10.08645,891 shs$562.70 million

This page (NASDAQ:UPB) was last updated on 5/15/2026 by MarketBeat.com Staff.
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