Comcast Corp. (CMCSA)

• Annual Data
• Quarterly Data

• Annual Data
• Quarterly Data

Comcast Corp., 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: 2019-01-31), 10-K (filing date: 2018-01-31), 10-K (filing date: 2017-02-03), 10-K (filing date: 2016-02-05), 10-K (filing date: 2015-02-27).

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

• Annual Data
• Quarterly Data

Comcast Corp., 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: 2019-01-31), 10-K (filing date: 2018-01-31), 10-K (filing date: 2017-02-03), 10-K (filing date: 2016-02-05), 10-K (filing date: 2015-02-27).

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

• Annual Data
• Quarterly Data

Comcast Corp., 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: 2019-01-31), 10-K (filing date: 2018-01-31), 10-K (filing date: 2017-02-03), 10-K (filing date: 2016-02-05), 10-K (filing date: 2015-02-27).

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

• Annual Data
• Quarterly Data

Comcast Corp., 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: 2019-01-31), 10-K (filing date: 2018-01-31), 10-K (filing date: 2017-02-03), 10-K (filing date: 2016-02-05), 10-K (filing date: 2015-02-27).

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

• Annual Data
• Quarterly Data

Comcast Corp., 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: 2019-01-31), 10-K (filing date: 2018-01-31), 10-K (filing date: 2017-02-03), 10-K (filing date: 2016-02-05), 10-K (filing date: 2015-02-27).

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

• Annual Data
• Quarterly Data

Comcast Corp., 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: 2019-01-31), 10-K (filing date: 2018-01-31), 10-K (filing date: 2017-02-03), 10-K (filing date: 2016-02-05), 10-K (filing date: 2015-02-27).

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