Biogen Inc. (BIIB)
NASDAQ: BIIB · Real-Time Price · USD
131.95
+3.95 (3.09%)
At close: Aug 1, 2025, 4:00 PM
132.45
+0.50 (0.38%)
After-hours: Aug 1, 2025, 7:58 PM EDT

Biogen Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Aug 1, 2025128.96132.90124.56131.95131.953.09%2,781,511
Jul 31, 2025133.00135.43127.24128.00128.001.07%3,240,096
Jul 30, 2025128.56129.78125.97126.64126.64-0.99%1,892,068
Jul 29, 2025128.54129.26127.60127.90127.90-1.07%1,108,783
Jul 28, 2025131.35131.85128.43129.28129.28-1.70%1,045,656
Jul 25, 2025133.05133.05130.13131.52131.52-0.81%977,034
Jul 24, 2025130.78132.65130.00132.59132.591.23%1,280,623
Jul 23, 2025129.44131.25128.36130.98130.982.45%1,127,502
Jul 22, 2025123.38127.94123.38127.85127.854.21%1,319,120
Jul 21, 2025124.98125.42121.05122.68122.68-1.85%1,403,476
Jul 18, 2025129.37129.58124.68124.99124.99-2.88%1,524,966
Jul 17, 2025128.18129.21127.31128.69128.690.18%1,151,166
Jul 16, 2025128.50129.51127.42128.46128.460.75%1,234,689
Jul 15, 2025132.96133.36127.47127.50127.50-4.21%1,317,080
Jul 14, 2025133.56134.21132.40133.11133.11-0.82%694,370
Jul 11, 2025133.49134.59132.37134.21134.21-0.83%1,137,577
Jul 10, 2025133.45137.19132.77135.33135.331.74%992,049
Jul 9, 2025134.56137.84131.67133.02133.02-1.07%1,528,822
Jul 8, 2025130.32135.58130.32134.46134.463.33%1,350,819
Jul 7, 2025132.10133.20129.08130.13130.13-2.06%1,086,980
Jul 3, 2025133.49134.42132.21132.87132.87-0.24%633,328
Jul 2, 2025130.00134.63129.85133.19133.192.40%1,474,231
Jul 1, 2025124.94134.75124.94130.07130.073.57%1,919,845
Jun 30, 2025126.30126.53123.90125.59125.59-0.39%1,184,454
Jun 27, 2025127.20128.25125.60126.08126.08-0.66%1,100,003
Jun 26, 2025127.89129.27126.46126.92126.92-0.31%864,951
Jun 25, 2025126.30127.98125.13127.31127.310.79%1,095,917
Jun 24, 2025125.57127.36125.02126.31126.311.24%938,208
Jun 23, 2025126.90127.68123.21124.76124.76-1.79%1,190,232
Jun 20, 2025127.96128.64126.12127.04127.040.40%2,166,571
Jun 18, 2025127.06127.88125.24126.54126.54-0.02%2,331,174
Jun 17, 2025130.27130.70126.49126.56126.56-3.42%1,154,818
Jun 16, 2025131.49131.58128.83131.04131.040.30%1,112,006
Jun 13, 2025130.87132.49130.11130.65130.65-1.25%1,207,509
Jun 12, 2025132.93134.12131.47132.31132.31-0.56%1,147,651
Jun 11, 2025135.90136.41132.90133.06133.06-1.79%1,331,148
Jun 10, 2025134.25136.84133.42135.49135.491.00%991,129
Jun 9, 2025134.06135.69132.93134.15134.150.77%1,081,560
Jun 6, 2025131.55133.72131.45133.13133.132.12%1,166,151
Jun 5, 2025131.87132.12129.61130.36130.36-1.14%1,235,671
Jun 4, 2025132.45133.66131.67131.86131.860.02%1,472,904
Jun 3, 2025130.77134.74129.51131.84131.840.53%1,825,014
Jun 2, 2025129.59131.85128.07131.14131.141.04%1,868,120
May 30, 2025132.59132.59129.62129.79129.79-2.23%3,640,026
May 29, 2025128.10132.94127.53132.75132.754.09%1,957,064
May 28, 2025128.12129.90126.87127.53127.53-0.67%1,559,077
May 27, 2025126.97129.36125.89128.39128.392.05%1,584,259
May 23, 2025124.29126.19123.97125.81125.81-0.39%837,407
May 22, 2025126.55127.07125.35126.30126.30-0.41%937,041
May 21, 2025129.70130.07126.28126.82126.82-2.86%1,593,947