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Upstream Bio, Inc. (UPB)
NASDAQ: UPB · Real-Time Price · USD
27.15
-0.17 (-0.62%)
At close: Dec 31, 2025, 4:00 PM EST
27.68
+0.53 (1.95%)
After-hours: Dec 31, 2025, 7:40 PM EST

Upstream Bio Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Dec 31, 202527.1727.5826.8627.1527.15-0.62%517,497
Dec 30, 202528.7728.7726.8627.3227.32-5.24%831,474
Dec 29, 202529.4829.9228.7028.8328.83-2.20%238,092
Dec 26, 202530.1130.1129.1029.4829.48-2.61%228,013
Dec 24, 202529.6530.7629.6030.2730.273.63%266,459
Dec 23, 202530.2730.7629.0529.2129.21-4.01%347,234
Dec 22, 202529.2930.8929.0030.4330.433.68%701,354
Dec 19, 202530.0130.5629.1929.3529.35-1.71%1,463,070
Dec 18, 202529.0930.2728.3629.8629.865.40%795,855
Dec 17, 202529.4129.9528.1528.3328.33-3.38%439,687
Dec 16, 202526.9229.7326.0329.3229.327.79%932,274
Dec 15, 202527.5627.9526.6827.2027.200.22%1,173,600
Dec 12, 202528.0028.2526.7827.1427.14-1.20%305,420
Dec 11, 202528.7229.5127.1627.4727.47-4.19%661,765
Dec 10, 202528.3729.5527.9328.6728.671.08%342,285
Dec 9, 202528.7329.1727.9928.3728.37-2.09%403,427
Dec 8, 202528.0329.5027.9128.9728.974.40%345,155
Dec 5, 202527.8228.4327.0027.7527.750.04%399,865
Dec 4, 202526.6928.4526.6927.7427.742.86%568,481
Dec 3, 202525.0127.1524.9426.9726.977.84%497,292
Dec 2, 202529.6129.8924.6125.0125.01-13.70%839,176
Dec 1, 202528.3229.0828.0728.9828.981.33%418,272
Nov 28, 202528.1428.8928.0628.6028.602.14%145,017
Nov 26, 202529.1233.0027.9028.0028.00-2.88%509,421
Nov 25, 202526.2229.2925.8428.8328.8310.67%683,358
Nov 24, 202525.3526.9925.3226.0526.051.96%1,256,823
Nov 21, 202524.7126.1024.1225.5525.552.36%384,488
Nov 20, 202525.3726.1924.7524.9624.960.08%402,304
Nov 19, 202525.3125.8024.1024.9424.94-2.43%422,235
Nov 18, 202526.2026.2025.0725.5625.56-0.54%585,001
Nov 17, 202524.3926.1524.1425.7025.704.77%527,525
Nov 14, 202523.0825.1023.0124.5324.535.10%801,777
Nov 13, 202523.5223.9922.9923.3423.34-1.60%429,938
Nov 12, 202523.7424.9523.2223.7223.72-0.25%476,587
Nov 11, 202523.3124.8022.8923.7823.781.19%214,970
Nov 10, 202523.5223.8722.5923.5023.502.35%490,481
Nov 7, 202523.6423.6421.9822.9622.96-2.96%271,659
Nov 6, 202524.0024.5823.0323.6623.66-1.29%289,373
Nov 5, 202525.4425.6523.6623.9723.97-4.27%234,637
Nov 4, 202524.2725.5724.0225.0425.040.08%342,735
Nov 3, 202525.9226.2224.7625.0225.02-3.21%317,134
Oct 31, 202525.7026.2525.4825.8525.850.31%215,055
Oct 30, 202523.9326.9023.9325.7725.776.53%353,009
Oct 29, 202524.8225.3323.9524.1924.19-2.62%197,859
Oct 28, 202523.5025.0923.5024.8424.845.34%418,207
Oct 27, 202521.9724.0021.8923.5823.587.87%414,110
Oct 24, 202521.4522.1421.4421.8621.863.45%186,192
Oct 23, 202522.1222.4221.0221.1321.13-4.60%241,381
Oct 22, 202522.2222.6221.9022.1522.15-0.81%450,360
Oct 21, 202523.0323.0322.1422.3322.33-3.12%475,311