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Upstream Bio, Inc. (UPB)
NASDAQ: UPB · Real-Time Price · USD
16.02
-1.33 (-7.67%)
At close: Sep 17, 2025, 4:00 PM EDT
15.00
-1.02 (-6.37%)
After-hours: Sep 17, 2025, 6:01 PM EDT

Upstream Bio Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Sep 17, 202517.3317.7815.5516.02--7.67%539,363
Sep 16, 202516.7817.9716.6117.3517.353.34%593,399
Sep 15, 202517.8318.0016.7916.7916.79-4.44%374,000
Sep 12, 202518.0018.1117.5417.5717.57-1.95%282,530
Sep 11, 202517.7518.1817.4717.9217.920.67%305,365
Sep 10, 202518.2118.7117.0217.8017.80-2.41%526,240
Sep 9, 202518.7218.9417.9818.2418.24-2.62%373,673
Sep 8, 202520.0820.3218.6718.7318.73-6.21%600,744
Sep 5, 202519.8120.4219.0919.9719.971.47%556,222
Sep 4, 202520.0120.2818.5719.6819.68-1.60%563,563
Sep 3, 202520.9421.0319.5820.0020.00-1.28%969,892
Sep 2, 202516.8720.3816.6620.2620.2618.27%2,191,677
Aug 29, 202516.9117.2216.3717.1317.132.21%305,698
Aug 28, 202516.8317.2016.4216.7616.760.36%444,386
Aug 27, 202517.3017.4316.6616.7016.70-3.47%254,424
Aug 26, 202516.9317.7816.9317.3017.303.41%356,186
Aug 25, 202517.6017.6016.5616.7316.73-5.10%215,747
Aug 22, 202517.8318.4817.5417.6317.63-0.62%289,080
Aug 21, 202516.0717.9816.0217.7417.748.44%421,874
Aug 20, 202516.7117.1716.3416.3616.36-3.20%378,945
Aug 19, 202517.9218.2316.5016.9016.90-6.22%507,895
Aug 18, 202518.9319.3717.6718.0218.02-4.81%394,799
Aug 15, 202518.6819.2818.1518.9318.931.66%424,802
Aug 14, 202518.4318.9516.8018.6218.620.32%525,569
Aug 13, 202517.5118.7017.0518.5618.566.06%557,886
Aug 12, 202516.9717.8216.6217.5017.505.49%290,402
Aug 11, 202516.0016.6215.6416.5916.593.69%1,453,429
Aug 8, 202515.8316.0015.1816.0016.001.01%214,758
Aug 7, 202517.0617.5715.8115.8415.84-5.26%371,732
Aug 6, 202515.1916.8015.0516.7216.727.87%366,777
Aug 5, 202515.6616.0615.4515.5015.50-0.70%359,644
Aug 4, 202515.5915.8815.0415.6115.610.45%410,281
Aug 1, 202514.7815.6014.2115.5415.541.50%514,108
Jul 31, 202515.2516.1515.0215.3115.310.79%567,997
Jul 30, 202514.1315.4713.9915.1915.198.73%868,715
Jul 29, 202513.9914.6312.9513.9713.97-2.58%469,215
Jul 28, 202513.7315.2713.5914.3414.345.21%760,748
Jul 25, 202513.5213.9712.7413.6313.632.10%399,320
Jul 24, 202511.5413.6011.4413.3513.3515.78%674,111
Jul 23, 202510.9311.8410.8711.5311.537.26%1,103,441
Jul 22, 202510.5911.1510.5410.7510.751.03%281,399
Jul 21, 202510.7311.0810.6110.6410.64-0.75%198,686
Jul 18, 202511.1111.3610.6310.7210.72-2.90%225,652
Jul 17, 202511.0011.4410.7811.0411.041.10%561,208
Jul 16, 202511.1311.5410.7810.9210.92-1.97%389,732
Jul 15, 202511.8011.8911.1111.1411.14-5.03%161,741
Jul 14, 202511.4412.1011.3011.7311.732.18%261,127
Jul 11, 202511.6811.8511.4511.4811.48-3.04%164,986
Jul 10, 202511.9611.9711.5311.8411.841.20%410,864
Jul 9, 202510.9911.8410.9211.7011.707.34%527,783