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Biogen Inc. (BIIB)
NASDAQ: BIIB · Real-Time Price · USD
183.38
+2.71 (1.50%)
At close: Apr 28, 2026, 4:00 PM EDT
184.88
+1.50 (0.82%)
Pre-market: Apr 29, 2026, 7:11 AM EDT

Biogen Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Apr 28, 2026182.45184.41181.89183.38183.381.50%1,235,734
Apr 27, 2026183.16186.15179.15180.67180.67-2.01%1,101,370
Apr 24, 2026186.65186.65183.17184.38184.38-1.86%723,366
Apr 23, 2026189.46190.32187.01187.88187.88-1.15%816,281
Apr 22, 2026189.31192.75188.67190.07190.072.22%1,328,297
Apr 21, 2026184.52187.74181.75185.95185.951.42%1,063,303
Apr 20, 2026179.54184.26178.72183.34183.343.38%1,484,371
Apr 17, 2026176.29178.41175.69177.35177.350.76%1,239,458
Apr 16, 2026178.82179.99174.85176.02176.02-2.50%953,722
Apr 15, 2026179.36180.87177.70180.54180.540.88%1,168,801
Apr 14, 2026177.71181.77177.45178.96178.961.47%1,550,580
Apr 13, 2026172.62176.79171.22176.37176.371.96%1,414,958
Apr 10, 2026177.97177.97172.32172.97172.97-2.34%1,501,979
Apr 9, 2026177.81180.06174.97177.11177.11-1.55%1,266,491
Apr 8, 2026178.24180.24176.35179.90179.902.44%1,289,686
Apr 7, 2026172.20175.64170.43175.61175.611.90%1,515,806
Apr 6, 2026177.00177.39168.64172.34172.34-2.82%2,149,104
Apr 2, 2026181.46182.23176.39177.34177.34-3.50%1,339,297
Apr 1, 2026183.16186.31181.71183.78183.780.25%1,390,216
Mar 31, 2026179.46184.68171.37183.33183.33-2.26%2,719,977
Mar 30, 2026186.16190.09185.51187.57187.572.03%799,935
Mar 27, 2026191.06191.06183.01183.84183.84-3.78%935,104
Mar 26, 2026189.00192.28188.36191.06191.060.99%879,198
Mar 25, 2026184.91189.38184.91189.18189.182.85%775,195
Mar 24, 2026182.63184.84180.33183.94183.940.16%644,275
Mar 23, 2026183.48185.00183.00183.64183.641.20%1,011,752
Mar 20, 2026183.13183.69180.47181.46181.46-1.06%2,214,268
Mar 19, 2026182.18185.45181.68183.41183.410.60%768,649
Mar 18, 2026184.13184.32180.48182.31182.31-1.61%846,255
Mar 17, 2026184.73186.52183.20185.29185.291.11%810,219
Mar 16, 2026182.75184.62181.88183.26183.260.94%995,911
Mar 13, 2026185.99188.00181.46181.55181.55-1.81%1,092,301
Mar 12, 2026187.86188.91184.63184.90184.90-2.93%851,563
Mar 11, 2026187.54192.99187.54190.48190.481.10%864,392
Mar 10, 2026187.69190.78187.02188.41188.410.09%687,662
Mar 9, 2026183.91188.50182.60188.24188.241.82%651,626
Mar 6, 2026186.25186.25181.24184.87184.87-1.71%772,906
Mar 5, 2026187.97190.99185.95188.08188.08-0.98%893,331
Mar 4, 2026185.06190.37183.16189.94189.943.22%952,927
Mar 3, 2026185.01187.05181.79184.02184.02-2.14%1,049,925
Mar 2, 2026190.22190.75186.72188.05188.05-1.97%691,597
Feb 27, 2026187.51192.46186.62191.82191.822.02%1,402,201
Feb 26, 2026190.30190.74185.90188.02188.02-1.42%988,117
Feb 25, 2026194.23196.73189.89190.73190.73-2.25%942,723
Feb 24, 2026196.03198.72194.43195.13195.13-0.62%716,382
Feb 23, 2026191.82197.05189.11196.34196.342.24%878,939
Feb 20, 2026190.78192.60189.95192.03192.03-0.03%799,225
Feb 19, 2026193.51195.00191.05192.08192.08-1.06%993,273
Feb 18, 2026195.32195.68193.11194.13194.13-0.76%1,049,036
Feb 17, 2026197.46200.29193.37195.62195.62-0.46%986,535
Feb 13, 2026196.27199.50195.52196.52196.520.52%1,352,792
Feb 12, 2026190.15196.00189.00195.50195.502.25%1,657,480
Feb 11, 2026188.35192.00187.20191.20191.201.17%996,929
Feb 10, 2026194.07195.72188.74188.99188.99-2.49%1,836,221
Feb 9, 2026199.83201.00191.88193.81193.81-3.66%2,096,252
Feb 6, 2026187.01202.41184.60201.18201.188.53%3,404,876
Feb 5, 2026184.87187.73184.54185.36185.36-0.05%2,542,641
Feb 4, 2026177.25186.24177.10185.45185.454.92%2,076,363
Feb 3, 2026177.79182.67176.19176.76176.76-1.30%1,594,142
Feb 2, 2026179.30180.76177.58179.09179.09-0.44%1,288,816
Jan 30, 2026177.09180.14175.96179.89179.892.11%1,487,978
Jan 29, 2026174.88177.20173.51176.18176.180.77%1,146,709
Jan 28, 2026173.63175.06170.85174.83174.830.41%1,304,662
Jan 27, 2026173.02176.14172.23174.12174.120.58%748,078
Jan 26, 2026171.67174.31170.59173.12173.120.89%1,049,188
Jan 23, 2026173.17173.90170.04171.59171.59-1.27%1,250,463
Jan 22, 2026171.78175.29171.65173.80173.800.68%996,425
Jan 21, 2026165.31172.87165.31172.62172.624.38%1,447,089
Jan 20, 2026161.51165.61160.37165.38165.380.58%1,879,947
Jan 16, 2026168.87169.34163.74164.42164.42-2.46%1,816,538
Jan 15, 2026169.03169.79166.79168.57168.57-0.44%1,562,727
Jan 14, 2026177.73178.41165.58169.31169.31-5.04%3,635,883
Jan 13, 2026185.42186.32177.05178.30178.30-3.95%1,597,380
Jan 12, 2026188.00188.00182.73185.63185.63-1.06%1,280,360
Jan 9, 2026186.74190.20186.49187.62187.620.87%1,416,702
Jan 8, 2026187.02187.77183.50186.00186.00-0.49%1,622,749
Jan 7, 2026181.70187.06181.70186.91186.912.35%2,122,447
Jan 6, 2026174.94182.97174.30182.61182.614.57%2,115,650
Jan 5, 2026175.73180.56171.61174.63174.63-1.79%1,663,631
Jan 2, 2026175.37178.24174.28177.82177.821.04%1,095,744
Dec 31, 2025175.76177.19175.02175.99175.99-0.23%890,441
Dec 30, 2025176.30176.99175.72176.40176.40-0.24%609,867
Dec 29, 2025177.00178.46176.31176.83176.83-0.14%928,193
Dec 26, 2025175.30177.19175.00177.08177.080.43%687,403
Dec 24, 2025175.73177.18175.37176.33176.330.86%434,748
Dec 23, 2025174.26175.58173.08174.82174.820.07%1,281,705
Dec 22, 2025174.78177.29172.90174.70174.70-0.06%1,909,529
Dec 19, 2025171.32176.42170.00174.80174.802.88%14,994,759
Dec 18, 2025171.59173.00168.56169.91169.91-1.27%2,761,018
Dec 17, 2025171.43173.83169.55172.10172.100.35%2,783,560
Dec 16, 2025174.51174.51169.52171.50171.50-2.41%2,408,490
Dec 15, 2025173.67175.94170.45175.74175.740.94%2,291,589
Dec 12, 2025173.49175.08171.27174.10174.100.93%1,781,471
Dec 11, 2025177.47180.79172.00172.50172.50-2.84%2,721,790
Dec 10, 2025173.30178.17169.24177.55177.550.97%2,147,901
Dec 9, 2025179.91181.99175.39175.84175.84-2.55%1,506,685
Dec 8, 2025181.30182.12179.21180.44180.44-0.47%1,474,568
Dec 5, 2025181.96183.15181.10181.30181.30-0.37%1,209,961
Dec 4, 2025181.86182.69179.27181.98181.980.68%1,246,342
Dec 3, 2025180.17182.94178.05180.75180.750.32%1,845,129