BIIB Return Tang Equity - BIOGEN INC.

Complete source-backed return tang equity history.

Available history: 2007-12-31 to 2026-03-31
Data captured: 2026-09-04

Historical Return Tang Equity

Date	Return Tang Equity
2026-03-31	27.95%
2025-12-31	29.48%
2025-09-30	38.40%
2025-06-30	44.02%
2025-03-31	54.31%
2024-12-31	69.37%
2024-09-30	84.37%
2024-06-30	70.96%
2024-03-31	128.92%
2023-12-31	42.67%
2023-09-30	24.82%
2023-06-30	38.47%
2023-03-31	50.03%
2022-12-31	51.97%
2022-09-30	57.18%
2022-06-30	50.25%
2022-03-31	41.90%
2021-12-31	50.03%
2021-09-30	64.10%
2021-06-30	70.25%
2021-03-31	113.17%
2020-12-31	149.25%
2020-09-30	202.90%
2020-06-30	193.70%
2020-03-31	136.81%
2019-12-31	115.74%
2019-09-30	95.16%
2019-06-30	114.50%
2019-03-31	83.18%
2018-12-31	93.22%
2018-09-30	38.27%
2018-06-30	41.86%
2018-03-31	32.41%
2017-12-31	31.82%
2017-09-30	39.91%
2017-06-30	42.68%
2017-03-31	44.23%
2016-12-31	43.71%
2016-09-30	44.67%
2016-06-30	46.35%
2016-03-31	49.88%
2015-12-31	52.87%
2015-09-30	44.08%
2015-06-30	33.50%
2015-03-31	33.38%
2014-12-31	32.43%
2014-09-30	28.23%
2014-06-30	26.10%
2014-03-31	24.24%
2013-12-31	25.21%
2013-09-30	24.55%
2013-06-30	24.03%
2013-03-31	24.54%
2012-12-31	23.96%
2012-09-30	25.45%
2012-06-30	26.46%
2012-03-31	24.31%
2011-12-31	23.38%
2011-09-30	23.40%
2011-06-30	22.59%
2011-03-31	24.63%
2010-12-31	24.01%
2010-09-30	27.97%
2010-06-30	42.20%
2010-03-31	20.05%
2009-12-31	19.33%
2009-09-30	16.06%
2009-06-30	15.67%

Annual Return Tang Equity

Date	Return Tang Equity
2025-12-31	29.48%
2024-12-31	69.37%
2023-12-31	42.67%
2022-12-31	51.97%
2021-12-31	50.03%
2020-12-31	149.25%
2019-12-31	115.74%
2018-12-31	93.22%
2017-12-31	31.82%
2016-12-31	43.71%
2015-12-31	52.87%
2014-12-31	32.43%
2013-12-31	25.21%
2012-12-31	23.96%
2011-12-31	23.38%
2010-12-31	23.65%
2009-12-31	19.09%
2008-12-31	16.78%
2007-12-31	11.49%