Biogen Inc. (BIIB)

• Annual Data
• Quarterly Data

• Annual Data
• Quarterly Data

Biogen Inc., decomposition of ROE

	ROE	=	ROA	×	Leverage
Dec 31, 2018		=		×
Dec 31, 2017		=		×
Dec 31, 2016		=		×
Dec 31, 2015		=		×
Dec 31, 2014		=		×

Based on: 10-K (filing date: 2019-02-06), 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04).

The primary reason for the increase in Return on Equity (ROE) over 2018 year is the increase in profitability measured by Return on Assets (ROA).

• Annual Data
• Quarterly Data

Biogen Inc., decomposition of ROE

	ROE	=	Net Profit Margin	×	Asset Turnover	×	Leverage
Dec 31, 2018		=		×		×
Dec 31, 2017		=		×		×
Dec 31, 2016		=		×		×
Dec 31, 2015		=		×		×
Dec 31, 2014		=		×		×

Based on: 10-K (filing date: 2019-02-06), 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04).

The primary reason for the increase in Return on Equity (ROE) over 2018 year is the increase in profitability measured by Net Profit Margin.

Biogen Inc., decomposition of ROE

	ROE	=	Tax Burden	×	Interest Burden	×	EBIT Margin	×	Asset Turnover	×	Leverage
Dec 31, 2018		=		×		×		×		×
Dec 31, 2017		=		×		×		×		×
Dec 31, 2016		=		×		×		×		×
Dec 31, 2015		=		×		×		×		×
Dec 31, 2014		=		×		×		×		×

Based on: 10-K (filing date: 2019-02-06), 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04).

The primary reason for the increase in Return on Equity (ROE) over 2018 year is the increase in effect of taxes measured by Tax Burden.

• Annual Data
• Quarterly Data

Biogen Inc., decomposition of ROA

	ROA	=	Net Profit Margin	×	Asset Turnover
Dec 31, 2018		=		×
Dec 31, 2017		=		×
Dec 31, 2016		=		×
Dec 31, 2015		=		×
Dec 31, 2014		=		×

Based on: 10-K (filing date: 2019-02-06), 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04).

The primary reason for the increase in Return on Assets (ROA) over 2018 year is the increase in profitability measured by Net Profit Margin.

Biogen Inc., decomposition of ROA

	ROA	=	Tax Burden	×	Interest Burden	×	EBIT Margin	×	Asset Turnover
Dec 31, 2018		=		×		×		×
Dec 31, 2017		=		×		×		×
Dec 31, 2016		=		×		×		×
Dec 31, 2015		=		×		×		×
Dec 31, 2014		=		×		×		×

Based on: 10-K (filing date: 2019-02-06), 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04).

The primary reason for the increase in Return on Assets (ROA) over 2018 year is the increase in effect of taxes measured by Tax Burden.

Biogen Inc., decomposition of Net Profit Margin

	Net Profit Margin	=	Tax Burden	×	Interest Burden	×	EBIT Margin
Dec 31, 2018		=		×		×
Dec 31, 2017		=		×		×
Dec 31, 2016		=		×		×
Dec 31, 2015		=		×		×
Dec 31, 2014		=		×		×

Based on: 10-K (filing date: 2019-02-06), 10-K (filing date: 2018-02-01), 10-K (filing date: 2017-02-02), 10-K (filing date: 2016-02-03), 10-K (filing date: 2015-02-04).

The primary reason for the increase in Net Profit Margin over 2018 year is the increase in effect of taxes measured by Tax Burden.