Upstream Bio Inc (UPB)

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Upstream Bio Inc Stock (UPB) Price History

The historical daily chart and data for Upstream Bio Inc stock (UPB), show that the latest closing stock price as of August 14, 2026, is $7.07.

Upstream Bio Inc all-time high stock price is $33.68, occurred on January 14, 2026.
The lowest Upstream Bio Inc stock price recorded was $5.14 on April 09, 2025. Since then, Upstream Bio Inc's stock price has risen over 37.55% to $7.07 now.
The 52-week high stock price for UPB is $33.68, representing a 376.38% increase from the current share price, occurred on January 14, 2026.
The 52-week low stock price for UPB is $5.85, indicating a -17.26% decrease from the current share price, occurred on June 12, 2026.

The table below shows more information about UPB historical price data:

Daily

Weekly

Monthly

30D

60D

YTD

Date	High	Low	High - Low	Volume	% Change
Aug 14, 2026	$7.14	$6.80	$0.34	688,248.0	+2.32%
Aug 13, 2026	$7.04	$6.87	$0.17	378,828.0	+0.00%
Aug 12, 2026	$7.25	$6.84	$0.41	635,117.0	-2.54%
Aug 11, 2026	$7.70	$7.01	$0.69	628,005.0	-4.70%
Aug 10, 2026	$7.62	$7.20	$0.42	869,490.0	+2.62%
Aug 07, 2026	$7.26	$6.89	$0.37	621,836.0	+5.53%
Aug 06, 2026	$7.17	$6.66	$0.5058	427,165.0	+1.93%
Aug 05, 2026	$6.88	$6.58	$0.30	917,141.0	-0.74%
Aug 04, 2026	$6.92	$6.40	$0.515	1,362,392.0	+5.76%
Aug 03, 2026	$6.43	$6.17	$0.255	774,289.0	+1.74%
Jul 31, 2026	$6.69	$6.29	$0.3975	297,713.0	-3.96%
Jul 30, 2026	$6.67	$6.29	$0.375	320,622.0	+2.50%
Jul 29, 2026	$6.48	$6.21	$0.27	702,776.0	+0.16%
Jul 28, 2026	$6.54	$6.09	$0.45	432,761.0	+0.00%
Jul 27, 2026	$6.60	$6.26	$0.34	459,471.0	-0.16%
Jul 24, 2026	$6.61	$6.16	$0.45	626,341.0	+0.16%
Jul 23, 2026	$6.59	$6.32	$0.27	625,130.0	-2.88%
Jul 22, 2026	$6.99	$6.47	$0.52	704,488.0	-5.59%
Jul 21, 2026	$7.08	$6.86	$0.22	340,950.0	+0.00%
Jul 20, 2026	$7.14	$6.80	$0.345	457,968.0	-0.43%
Jul 17, 2026	$7.30	$6.90	$0.40	378,032.0	-3.04%
Jul 16, 2026	$7.34	$6.98	$0.36	561,160.0	-0.55%

Upstream Bio Inc Stock (UPB) Year by Year Price History

In this detailed analysis, we present a comprehensive overview of the price movements of Upstream Bio Inc stock over the years. By exploring the year-by-year data, investors can gain valuable insights into the historical performance and volatility of UPB shares. From significant milestones and fluctuations to notable trends, this in-depth examination of Upstream Bio Inc stock price history provides a foundation for understanding how the company's stock has evolved over time.

Upstream Bio Inc Stock (UPB) Price History 2026

Month	High	Low	High - Low	Volume	% Change
Aug, 2026	$7.70	$6.17	$1.53	7,990,759.0	+12.04%
Jul, 2026	$8.00	$6.09	$1.91	10,296,647.0	-8.82%
Jun, 2026	$8.64	$5.85	$2.79	15,250,716.0	-17.22%
May, 2026	$9.60	$7.99	$1.61	10,271,388.0	-8.93%
Apr, 2026	$10.67	$8.96	$1.71	12,113,945.0	+2.00%
Mar, 2026	$10.43	$7.25	$3.18	22,603,021.0	+17.19%
Feb, 2026	$32.38	$7.62	$24.76	44,951,937.0	-75.29%
Jan, 2026	$33.68	$25.00	$8.68	12,435,765.0	+14.48%

Upstream Bio Inc Stock (UPB) Price History 2025

Month	High	Low	High - Low	Volume	% Change
Dec, 2025	$30.89	$24.61	$6.28	12,118,113.0	-4.48%
Nov, 2025	$33.00	$21.98	$11.02	8,784,413.0	+10.64%
Oct, 2025	$26.90	$18.05	$8.85	8,125,871.0	+37.43%
Sep, 2025	$21.03	$15.55	$5.48	12,893,529.0	+9.81%
Aug, 2025	$19.37	$14.21	$5.16	9,057,642.0	+11.89%
Jul, 2025	$16.15	$10.54	$5.61	8,863,349.0	+39.44%
Jun, 2025	$12.10	$9.25	$2.85	10,827,671.0	+18.96%
May, 2025	$9.90	$7.79	$2.11	8,016,902.0	-0.32%
Apr, 2025	$10.50	$5.14	$5.36	6,329,494.0	+51.31%
Mar, 2025	$10.08	$6.12	$3.96	5,002,930.0	-22.82%
Feb, 2025	$10.65	$6.65	$4.00	4,866,797.0	-26.37%
Jan, 2025	$18.95	$9.29	$9.66	4,964,040.0	-34.49%