NASDAQ · UPB

Upstream Bio, Inc.

Healthcare · Biotechnology

$4.59

Up+$0.03 (+0.54%)

Updated Oct 7, 2026, 4:24 PM

SID Score

3.2/10

Composite research score

Smart Money

—

Institutional and insider signal

Price performance · UPB

UPB price history

1M range · 21 trading sessions · Daily adjusted prices

Prices through Oct 6, 2026

Daily close

View OHLC price history

UPB OHLC price history, latest 40 sessions
Date	Open	High	Low	Close	Volume
Oct 6, 2026	$4.84	$4.865	$4.53	$4.59	1.06M
Oct 5, 2026	$5.07	$5.10	$4.665	$4.85	1.01M
Oct 2, 2026	$5.12	$5.21	$4.86	$5.04	956.52K
Oct 1, 2026	$5.25	$5.345	$4.98	$5.04	832.38K
Sep 30, 2026	$5.23	$5.455	$5.145	$5.27	851.22K
Sep 29, 2026	$5.28	$5.305	$4.99	$5.19	784.21K
Sep 28, 2026	$5.34	$5.385	$5.12	$5.30	615.4K
Sep 25, 2026	$5.20	$5.39	$5.07	$5.36	429.21K
Sep 24, 2026	$5.19	$5.20	$5.045	$5.17	566.58K
Sep 23, 2026	$5.48	$5.49	$4.985	$5.19	552.99K
Sep 22, 2026	$5.44	$5.56	$5.38	$5.49	360.53K
Sep 21, 2026	$5.42	$5.44	$5.27	$5.365	364.04K
Sep 18, 2026	$5.32	$5.41	$5.21	$5.34	1M
Sep 17, 2026	$5.44	$5.48	$5.235	$5.31	533.87K
Sep 16, 2026	$5.49	$5.54	$5.27	$5.33	497.24K
Sep 15, 2026	$5.81	$5.81	$5.455	$5.48	421.27K
Sep 14, 2026	$5.75	$5.87	$5.70	$5.81	491.02K
Sep 11, 2026	$5.84	$5.84	$5.65	$5.73	501.31K
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