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View Price for BIIB.
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Sep '18
Jan '19
May '19
 
285.00
270.00
255.00
240.00
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Historical Price Data

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Date Open High Low Close Volume
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
Aug 06, 2026 208.75 209.03 202.03 206.28 892772.0
Aug 05, 2026 210.60 212.18 205.80 206.63 873781.0
Aug 04, 2026 200.96 209.74 199.93 208.45 1.206M
Aug 03, 2026 203.34 203.85 199.58 201.82 940993.0
Jul 31, 2026 207.51 208.05 202.57 202.95 1.062M
Jul 30, 2026 204.38 210.18 203.09 207.93 892938.0
Jul 29, 2026 210.50 218.59 206.26 209.23 2.400M
Jul 28, 2026 201.01 207.72 199.40 205.61 1.832M
Jul 27, 2026 202.75 204.47 199.83 200.14 762581.0
Jul 24, 2026 202.24 203.30 200.04 202.19 596372.0
Jul 23, 2026 197.04 203.60 196.92 200.62 1.032M
Jul 22, 2026 203.70 204.30 197.40 197.74 841350.0
Jul 21, 2026 199.47 203.70 198.59 203.16 652841.0
Jul 20, 2026 204.08 205.65 199.62 199.95 963088.0

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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