Biogen Inc. (BIIB) NASDAQ

Currency In USD

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BIIB Historical Return

If you invested $1000 in Biogen Inc. (BIIB) 10 years ago, it would be worth $710.82 as of September 04, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $674.83, while $1000 invested 1 year ago would be worth $1,578.03. This corresponds to total returns of -28.92%, -32.52%, 57.8%, respectively, with annualized returns of -3.36%, -7.57%, 57.8%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

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BIIB Historical Data

Date Range:

DateOpenCloseAdj CloseHighLowVolume
September 04, 2026221.15220.83220.83223.82219.82464,803
September 03, 2026225.44224.51224.51225.8221.23549,658
September 02, 2026218.2222.67222.67225.59216.971.27M
September 01, 2026218.11216.04216.04219.3213.6742,042
August 31, 2026216.47216.65216.65218.89213.58807,693
August 28, 2026221.17218.5218.5222216.78516,658
August 27, 2026219.39221.5221.5222.11217.53489,135
August 26, 2026219.34221.07221.07222218.69639,457
August 25, 2026218.93220.77220.77222.85218495,313
August 24, 2026216.4218.12218.12218.5213.96587,358
August 21, 2026217.76216.78216.78219.12215722,317
August 20, 2026217.98214.35214.35221.29214.16808,370
August 19, 2026215.33221.56221.56222.15215.08880,796
August 18, 2026211212.55212.55214.07210.01693,967
August 17, 2026208.36209.15209.15210.49207.62617,099
August 14, 2026210.01209.83209.83210.79208.22554,423
August 13, 2026212.98210.65210.65215.61208.79860,069
August 12, 2026203.52208.87208.87209.22201786,185
August 11, 2026206.63203.89203.89207.57203.53936,443
August 10, 2026206.7207.13207.13210.02206.29692,820
August 07, 2026207.38207.94207.94208.31204.16814,472
August 06, 2026208.75206.28206.28209.03202.03887,393
August 05, 2026210.6206.63206.63212.18205.8873,635
August 04, 2026200.96208.45208.45209.74199.931.2M
August 03, 2026203.34201.82201.82203.85199.58940,856
July 31, 2026207.51202.95202.95208.05202.571.06M
July 30, 2026204.38207.93207.93210.19203.09885,493
July 29, 2026210.5209.23209.23218.59206.272.4M
July 28, 2026201.01205.61205.61207.72199.41.82M
July 27, 2026202.75200.14200.14204.47199.83761,829
July 23, 2026197.04200.62200.62203.6196.921.02M
July 22, 2026203.7197.74197.74204.31197.4840,660
July 21, 2026199.47203.16203.16203.7198.59652,830
July 20, 2026204.08199.95199.95205.65199.62961,522
July 17, 2026208.6205.99205.99215.79203.41.15M
July 16, 2026198.26208.92208.92209.64194.671.86M
July 15, 2026191.21197.24197.24198.58186.032.07M
July 14, 2026200.34191.95191.95202189.43.9M
July 13, 2026199.33209.03209.03210.87197.742.25M
July 10, 2026197.63199.15199.15199.98194.371.11M
July 09, 2026198.92198.91198.91201.011961.63M
July 08, 2026204.86200.36200.36206.75198.931.89M
July 07, 2026211.86205.7205.7212205.651.13M
July 06, 2026215.95208.46208.46215.95208.271.21M
July 02, 2026212.74216.12216.12219.02210.751.15M
July 01, 2026215.25209.74209.74215.81209.671.14M
June 30, 2026218216.06216.06218212.581.04M
June 29, 2026215.74216.63216.63219.72214.081.24M
June 26, 2026202.53216.03216.03218.06202.292.36M
June 25, 2026201.63201.96201.96206.67200.21.28M
June 24, 2026199.34199.59199.59202.06198.661.28M
June 23, 2026198.88197.19197.19201.22197.01992,373
June 22, 2026199.48199.71199.71200.98194.741.67M
June 18, 2026200.22196.58196.58200.99193.21.72M
June 17, 2026195.14198.67198.67201.75194.041M
June 16, 2026199.69195.61195.61200.26194.04906,696
June 15, 2026198.37198.64198.64199.37195.89877,518
June 12, 2026200.57200.05200.05203.45199.06837,285
June 11, 2026195.49199.96199.96201.18194.24909,629
June 10, 2026200.21194.24194.24201.94194.11.07M
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