NASDAQ · UPB

Upstream Bio, Inc.

Healthcare · Biotechnology

$5.75

Down-$0.02 (-0.35%)

Updated Sep 11, 2026, 8:52 PM

SID Score

3.2/10

Composite research score

Smart Money

—

Institutional and insider signal

Price performance

UPB price history

1M range · 20 trading sessions · Daily adjusted prices

Daily close

View OHLC price history

UPB OHLC price history, latest 40 sessions
Date	Open	High	Low	Close	Volume
Sep 10, 2026	$5.86	$5.86	$5.67	$5.75	562.41K
Sep 9, 2026	$6.14	$6.20	$5.77	$5.96	726.24K
Sep 8, 2026	$6.01	$6.21	$5.77	$6.19	952.24K
Sep 4, 2026	$6.00	$6.23	$5.965	$6.01	643.27K
Sep 3, 2026	$6.49	$6.49	$5.77	$6.08	1.35M
Sep 2, 2026	$6.62	$6.98	$6.41	$6.48	515.76K
Sep 1, 2026	$6.58	$6.72	$6.50	$6.55	476.49K
Aug 31, 2026	$6.64	$6.77	$6.44	$6.62	895.01K
Aug 28, 2026	$6.71	$6.79	$6.60	$6.69	445.48K
Aug 27, 2026	$7.11	$7.14	$6.78	$6.79	335.06K
Aug 26, 2026	$7.18	$7.31	$6.90	$7.13	432.93K
Aug 25, 2026	$6.68	$7.18	$6.55	$7.18	554.42K
Aug 24, 2026	$7.00	$7.11	$6.46	$6.61	538.55K
Aug 21, 2026	$6.91	$7.0062	$6.85	$6.97	434.24K
Aug 20, 2026	$7.48	$7.555	$6.745	$6.85	592.94K
Aug 19, 2026	$7.04	$7.53	$6.91	$7.515	574.18K
Aug 18, 2026	$7.28	$7.435	$6.73	$6.85	461.78K
Aug 17, 2026	$7.02	$7.19	$6.86	$7.14	852.44K
Aug 14, 2026	$6.95	$7.14	$6.80	$7.07	688.25K
Aug 13, 2026	$7.02	$7.04	$6.87	$6.91	378.84K