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View Price for BIIB.
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Sep '18
Jan '19
May '19
 
285.00
270.00
255.00
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Historical Price Data

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Date Open High Low Close Volume
Sep 11, 2026 216.75 219.76 214.71 217.15 1.076M
Sep 10, 2026 209.92 216.70 208.93 215.43 936643.0
Sep 09, 2026 210.50 213.48 209.00 210.73 694669.0
Sep 08, 2026 215.45 217.28 210.54 212.50 617829.0
Sep 04, 2026 221.15 223.82 219.82 220.83 465108.0
Sep 03, 2026 225.44 225.80 221.23 224.51 550745.0
Sep 02, 2026 218.20 225.59 216.97 222.67 1.268M
Sep 01, 2026 218.11 219.30 213.60 216.04 785497.0
Aug 31, 2026 216.47 218.89 213.58 216.65 831004.0
Aug 28, 2026 221.17 222.00 216.78 218.50 517485.0
Aug 27, 2026 219.39 222.11 217.53 221.50 497524.0
Aug 26, 2026 219.34 222.00 218.69 221.07 647334.0
Aug 25, 2026 218.93 222.85 218.00 220.77 495435.0
Aug 24, 2026 216.40 218.50 213.96 218.12 649828.0
Aug 21, 2026 217.76 219.12 215.00 216.78 722348.0
Aug 20, 2026 217.98 221.29 214.16 214.35 808625.0
Aug 19, 2026 215.33 222.15 215.08 221.56 886914.0
Aug 18, 2026 211.00 214.06 210.01 212.55 694009.0
Aug 17, 2026 208.36 210.49 207.62 209.15 617238.0
Aug 14, 2026 210.01 210.79 208.22 209.83 554816.0
Aug 13, 2026 212.98 215.60 208.79 210.65 860095.0
Aug 12, 2026 203.52 209.22 201.00 208.87 789441.0
Aug 11, 2026 206.63 207.57 203.53 203.89 936835.0
Aug 10, 2026 206.70 210.02 206.29 207.13 706425.0
Aug 07, 2026 207.38 208.31 204.16 207.94 840566.0

Price Definition

The price of a security measures the cost to purchase 1 share of a security. For a company, price can be multiplied by shares outstanding to find the market capitalization (value of the company).

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