Upstream Bio (UPB) Price: 2.74

Upstream Bio, Inc. (UPB)

2.74 -0.25 (-8.36%) USD | NASDAQ | Oct 23, 16:00

2.735 0.00 (0.00%) After-Hours: 20:00

Price Chart

Historical Price Data

View and export this data back to 2024. Start Trial.

Date	Open	High	Low	Close	Volume
Oct 23, 2026	2.95	2.96	2.695	2.74	1.051M
Oct 22, 2026	2.77	2.99	2.70	2.99	1.450M
Oct 21, 2026	2.83	2.975	2.765	2.80	1.410M
Oct 20, 2026	2.79	3.09	2.78	2.82	1.676M
Oct 19, 2026	2.76	3.07	2.75	2.80	1.604M
Oct 16, 2026	3.39	3.39	2.74	2.76	1.836M
Oct 15, 2026	3.44	3.555	3.285	3.37	1.285M
Oct 14, 2026	3.475	3.60	3.29	3.42	1.574M
Oct 13, 2026	4.14	4.155	3.52	3.55	1.038M
Oct 12, 2026	4.68	4.72	4.12	4.17	848408.0
Oct 09, 2026	4.54	4.76	4.51	4.70	1.188M
Oct 08, 2026	4.53	4.65	4.365	4.55	2.857M
Oct 07, 2026	4.55	4.72	4.50	4.61	908403.0
Oct 06, 2026	4.84	4.865	4.53	4.59	1.062M
Oct 05, 2026	5.07	5.10	4.665	4.85	1.011M
Oct 02, 2026	5.12	5.21	4.86	5.04	956520.0
Oct 01, 2026	5.25	5.345	4.98	5.04	832378.0
Sep 30, 2026	5.23	5.455	5.145	5.27	851222.0
Sep 29, 2026	5.28	5.305	4.99	5.19	784211.0
Sep 28, 2026	5.34	5.385	5.12	5.30	615403.0
Sep 25, 2026	5.20	5.39	5.07	5.36	429212.0
Sep 24, 2026	5.19	5.20	5.045	5.17	566581.0
Sep 23, 2026	5.48	5.49	4.985	5.19	552994.0
Sep 22, 2026	5.44	5.56	5.38	5.49	360533.0
Sep 21, 2026	5.42	5.44	5.27	5.365	364035.0

Price Definition

The price of a security measures the cost to purchase 1 share of a security. For a company, price can be multiplied by shares outstanding to find the market capitalization (value of the company).

Read full definition.

Price Range, Past 5 Years

View Price Range, Past 5 Years

Start Trial

Minimum

Maximum

Average

Median

Price Benchmarks

View Price Benchmarks