Market Cap Chart

View Market Cap for BIIB.
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285.00
270.00
255.00
240.00
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Historical Market Cap Data

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Date Value
July 14, 2026 28.33B
July 13, 2026 30.85B
July 10, 2026 29.39B
July 09, 2026 29.36B
July 08, 2026 29.57B
July 07, 2026 30.36B
July 06, 2026 30.77B
July 02, 2026 31.90B
July 01, 2026 30.96B
June 30, 2026 31.89B
June 29, 2026 31.97B
June 26, 2026 31.89B
June 25, 2026 29.81B
June 24, 2026 29.46B
June 23, 2026 29.11B
June 22, 2026 29.48B
June 18, 2026 29.02B
June 17, 2026 29.32B
June 16, 2026 28.87B
June 15, 2026 29.32B
June 12, 2026 29.53B
June 11, 2026 29.51B
June 10, 2026 28.67B
June 09, 2026 29.39B
June 08, 2026 28.43B
Date Value
June 05, 2026 28.83B
June 04, 2026 29.00B
June 03, 2026 28.92B
June 02, 2026 27.87B
June 01, 2026 28.37B
May 29, 2026 28.93B
May 28, 2026 28.99B
May 27, 2026 29.08B
May 26, 2026 28.51B
May 22, 2026 28.61B
May 21, 2026 27.97B
May 20, 2026 27.73B
May 19, 2026 28.13B
May 18, 2026 28.33B
May 15, 2026 28.49B
May 14, 2026 28.25B
May 13, 2026 30.20B
May 12, 2026 29.43B
May 11, 2026 29.22B
May 08, 2026 28.56B
May 07, 2026 28.25B
May 06, 2026 28.15B
May 05, 2026 27.92B
May 04, 2026 27.64B
May 01, 2026 27.62B

Market Capitalization Definition

Market Capitalization measures the total value of a company based on their stock price multiplied by the shares outstanding. This metric is important because it gives you an idea of the size of a company, and how the size has changed over time. When studying companies from a relative basis, it would make sense to compare companies that have a similar market capitalization because factors like market share, economies of scale, and business models would also be similar.

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Market Cap Range, Past 5 Years

View Market Cap Range, Past 5 Years
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Market Cap Benchmarks

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