1 Year Total Returns (Daily) Chart

View 1 Year Total Returns (Daily) 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 1 Year Total Returns (Daily) Data

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Date Value
August 21, 2026 55.82%
August 20, 2026 54.22%
August 19, 2026 59.56%
August 18, 2026 56.39%
August 17, 2026 50.90%
August 14, 2026 55.50%
August 13, 2026 55.82%
August 12, 2026 62.00%
August 11, 2026 59.29%
August 10, 2026 58.51%
August 07, 2026 62.77%
August 06, 2026 59.49%
August 05, 2026 55.49%
August 04, 2026 57.68%
August 03, 2026 52.95%
July 31, 2026 58.55%
July 30, 2026 64.19%
July 29, 2026 63.59%
July 28, 2026 59.04%
July 27, 2026 52.17%
July 24, 2026 52.49%
July 23, 2026 53.17%
July 22, 2026 54.67%
July 21, 2026 65.60%
July 20, 2026 59.97%
Date Value
July 17, 2026 60.07%
July 16, 2026 62.63%
July 15, 2026 54.70%
July 14, 2026 44.20%
July 13, 2026 55.75%
July 10, 2026 47.16%
July 09, 2026 49.53%
July 08, 2026 49.01%
July 07, 2026 58.07%
July 06, 2026 56.89%
July 02, 2026 62.26%
July 01, 2026 61.25%
June 30, 2026 72.04%
June 29, 2026 71.82%
June 26, 2026 70.21%
June 25, 2026 58.64%
June 24, 2026 58.02%
June 23, 2026 58.06%
June 22, 2026 57.20%
June 18, 2026 55.35%
June 17, 2026 56.98%
June 16, 2026 49.28%
June 15, 2026 52.04%
June 12, 2026 51.20%
June 11, 2026 50.28%

Total Return Definition

The Total return is the change in price over a specific period of time that includes dividends and distributions paid.

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1 Year Total Returns (Daily) Range, Past 5 Years

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Median

1 Year Total Returns (Daily) Benchmarks

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Ionis Pharmaceuticals, Inc. 38.18%
AbbVie, Inc. 30.40%
Gilead Sciences, Inc. 29.10%
Vertex Pharmaceuticals, Inc. 37.89%
Amgen, Inc. 53.88%