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Upstream Bio, Inc. (UPB)
NASDAQ: UPB · Real-Time Price · USD
7.89
+0.23 (3.00%)
Mar 9, 2026, 1:59 PM EDT - Market open

Upstream Bio Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Mar 9, 20267.658.067.647.95-3.79%272,266
Mar 6, 20267.477.777.407.667.66-0.13%662,851
Mar 5, 20267.647.787.407.677.67-1.67%941,663
Mar 4, 20267.378.017.337.807.805.98%1,151,748
Mar 3, 20267.597.647.257.367.36-4.42%977,262
Mar 2, 20267.517.927.467.707.700.26%1,655,280
Feb 27, 20267.878.077.627.687.68-2.78%1,436,021
Feb 26, 20267.748.327.707.907.902.07%1,497,001
Feb 25, 20267.908.107.707.747.74-2.27%987,847
Feb 24, 20268.058.277.787.927.92-1.25%1,538,700
Feb 23, 20268.098.327.748.028.02-0.74%1,625,716
Feb 20, 20268.418.698.018.088.08-5.39%3,597,516
Feb 19, 20268.328.738.148.548.543.02%1,924,110
Feb 18, 20268.188.667.938.298.29-0.48%2,893,163
Feb 17, 20268.699.007.968.338.33-4.80%6,025,969
Feb 13, 202612.6912.698.528.758.75-31.64%6,503,631
Feb 12, 202614.8614.8612.7512.8012.80-12.87%3,879,133
Feb 11, 202619.0020.0112.6514.6914.69-47.18%8,848,205
Feb 10, 202626.1028.5825.9327.8127.816.47%800,791
Feb 9, 202626.2426.2425.1626.1226.12-0.31%509,701
Feb 6, 202626.5627.9825.9426.2026.200.77%517,906
Feb 5, 202629.4030.3125.8726.0026.00-11.50%619,509
Feb 4, 202630.8830.8828.3529.3829.38-4.58%610,504
Feb 3, 202630.3831.0529.8230.7930.792.84%635,741
Feb 2, 202631.1032.3829.6429.9429.94-3.67%783,093
Jan 30, 202630.6431.3729.7131.0831.080.45%667,528
Jan 29, 202630.3031.1229.6130.9430.941.68%459,682
Jan 28, 202632.5032.5029.9930.4330.43-6.37%658,138
Jan 27, 202630.2432.8330.1332.5032.507.76%1,068,844
Jan 26, 202629.7730.9129.7630.1630.160.47%545,748
Jan 23, 202631.6231.6229.8330.0230.02-5.57%371,092
Jan 22, 202631.7432.5231.7031.7931.790.63%402,451
Jan 21, 202630.9532.1430.3131.5931.591.90%468,367
Jan 20, 202630.2231.5229.0831.0031.00-774,067
Jan 16, 202631.0631.6429.8031.0031.000.32%418,416
Jan 15, 202632.4232.4230.7430.9030.90-4.33%718,897
Jan 14, 202632.6833.6831.9532.3032.30-0.92%620,972
Jan 13, 202631.7132.6630.4832.6032.602.97%834,721
Jan 12, 202629.7331.9329.3431.6631.666.42%678,977
Jan 9, 202627.8730.6027.8729.7529.758.02%851,461
Jan 8, 202627.7128.4927.2227.5427.54-1.92%502,764
Jan 7, 202626.0828.1626.0828.0828.088.54%700,323
Jan 6, 202625.9326.5225.0025.8725.87-1.00%452,815
Jan 5, 202627.0727.3925.2526.1326.13-3.47%689,799
Jan 2, 202627.3028.0126.7227.0727.07-0.29%586,439
Dec 31, 202527.1727.5826.8627.1527.15-0.62%517,846
Dec 30, 202528.7728.7726.8627.3227.32-5.24%831,474
Dec 29, 202529.4829.9228.7028.8328.83-2.20%238,342
Dec 26, 202530.1130.1129.1029.4829.48-2.61%228,014
Dec 24, 202529.6530.7629.6030.2730.273.63%266,481
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
Oct 20, 202521.3723.3421.1723.0523.059.92%787,806
Oct 17, 202521.8622.1520.6520.9720.97-5.88%370,897
Oct 16, 202521.7922.3921.3922.2822.282.72%397,419
Oct 15, 202520.1221.8720.1221.6921.698.56%477,981
Oct 14, 202520.6520.6519.6319.9819.98-0.50%261,701