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 May 07, 2026, is $8.99.

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 74.90% to $8.99 now.
The 52-week high stock price for UPB is $33.68, representing a 274.64% increase from the current share price, occurred on January 14, 2026.
The 52-week low stock price for UPB is $7.25, indicating a -19.35% decrease from the current share price, occurred on March 03, 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
May 07, 2026	$9.14	$8.69	$0.45	192,251.0	-2.18%
May 06, 2026	$9.29	$8.98	$0.31	409,160.0	+0.77%
May 05, 2026	$9.50	$8.88	$0.62	262,659.0	-2.04%
May 04, 2026	$9.57	$9.16	$0.41	300,447.0	-0.96%
May 01, 2026	$9.41	$9.12	$0.29	489,694.0	+2.40%
Apr 30, 2026	$9.30	$9.06	$0.24	394,953.0	-0.11%
Apr 29, 2026	$9.37	$8.97	$0.40	415,823.0	-3.36%
Apr 28, 2026	$9.64	$9.28	$0.365	474,584.0	+2.37%
Apr 27, 2026	$9.63	$9.15	$0.4817	664,689.0	-0.11%
Apr 24, 2026	$9.63	$9.21	$0.42	558,825.0	-3.12%
Apr 23, 2026	$9.72	$9.38	$0.3399	416,092.0	-0.41%
Apr 22, 2026	$9.71	$9.06	$0.645	624,770.0	+4.10%
Apr 21, 2026	$10.05	$9.22	$0.8328	526,268.0	-7.31%
Apr 20, 2026	$10.09	$9.79	$0.2999	387,862.0	+0.00%
Apr 17, 2026	$10.64	$9.84	$0.805	661,401.0	-1.09%
Apr 16, 2026	$10.15	$9.68	$0.4699	1,152,732.0	+2.23%
Apr 15, 2026	$10.52	$9.79	$0.73	552,120.0	-4.45%
Apr 14, 2026	$10.45	$10.08	$0.3728	645,890.0	+1.08%
Apr 13, 2026	$10.61	$10.09	$0.515	412,545.0	-2.48%
Apr 10, 2026	$10.67	$10.34	$0.3326	733,120.0	+0.67%
Apr 09, 2026	$10.49	$9.63	$0.86	812,951.0	+5.89%
Apr 08, 2026	$10.00	$9.45	$0.5481	474,283.0	+1.44%
Apr 07, 2026	$9.71	$9.31	$0.395	316,820.0	-0.21%

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
May, 2026	$9.57	$8.69	$0.88	1,846,462.0	-2.07%
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%