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 March 26, 2026, is $10.23.

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 99.03% to $10.23 now.
The 52-week high stock price for UPB is $33.68, representing a 229.23% increase from the current share price, occurred on January 14, 2026.
The 52-week low stock price for UPB is $5.14, indicating a -49.76% decrease from the current share price, occurred on April 09, 2025.

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

Daily

Weekly

Monthly

30D

60D

YTD

Date	High	Low	High - Low	Volume	% Change
Mar 26, 2026	$10.25	$9.38	$0.87	142,072.0	+7.92%
Mar 25, 2026	$9.57	$8.67	$0.90	672,976.0	+12.07%
Mar 24, 2026	$8.62	$8.12	$0.50	699,709.0	+0.00%
Mar 23, 2026	$9.03	$8.43	$0.5998	743,272.0	-2.54%
Mar 20, 2026	$8.68	$8.16	$0.5167	3,024,457.0	+3.46%
Mar 19, 2026	$8.63	$8.23	$0.3997	733,893.0	-3.29%
Mar 18, 2026	$9.70	$8.65	$1.04	719,466.0	-10.76%
Mar 17, 2026	$9.90	$9.17	$0.73	914,704.0	+1.04%
Mar 16, 2026	$9.68	$9.27	$0.405	663,390.0	+4.12%
Mar 13, 2026	$9.76	$8.93	$0.83	723,097.0	-2.17%
Mar 12, 2026	$9.47	$8.70	$0.77	1,135,736.0	+0.80%
Mar 11, 2026	$9.37	$8.16	$1.21	1,690,327.0	+15.27%
Mar 10, 2026	$8.36	$7.99	$0.3699	652,501.0	+0.74%
Mar 09, 2026	$8.09	$7.64	$0.45	1,193,812.0	+5.22%
Mar 06, 2026	$7.77	$7.40	$0.37	662,852.0	-0.13%
Mar 05, 2026	$7.78	$7.40	$0.38	941,646.0	-1.67%
Mar 04, 2026	$8.01	$7.33	$0.677	1,152,293.0	+5.98%
Mar 03, 2026	$7.64	$7.25	$0.39	977,298.0	-4.42%
Mar 02, 2026	$7.92	$7.46	$0.455	1,655,282.0	+0.26%
Feb 27, 2026	$8.07	$7.62	$0.45	1,407,203.0	-2.78%
Feb 26, 2026	$8.32	$7.70	$0.6166	1,484,517.0	+2.07%
Feb 25, 2026	$8.10	$7.70	$0.40	975,166.0	-2.27%
Feb 24, 2026	$8.27	$7.78	$0.49	1,538,501.0	-1.25%

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
Mar, 2026	$10.25	$7.25	$3.00	19,098,783.0	+33.07%
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%