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DuPont Analysis: Decomposition of ROE
Quarterly Data
Difficulty: Beginner
Decomposing ROE involves expressing net income divided by shareholders’ equity as the product of component ratios.
Two-Component Disaggregation of ROE
Comcast Corp., decomposition of ROE (quarterly data)
Based on: 10-K (filing date: 2019-01-31), 10-Q (filing date: 2018-10-25), 10-Q (filing date: 2018-07-26), 10-Q (filing date: 2018-04-25), 10-K (filing date: 2018-01-31), 10-Q (filing date: 2017-10-26), 10-Q (filing date: 2017-07-27), 10-Q (filing date: 2017-04-27), 10-K (filing date: 2017-02-03), 10-Q (filing date: 2016-10-26), 10-Q (filing date: 2016-07-27), 10-Q (filing date: 2016-04-27), 10-K (filing date: 2016-02-05), 10-Q (filing date: 2015-10-27), 10-Q (filing date: 2015-07-23), 10-Q (filing date: 2015-05-04), 10-K (filing date: 2015-02-27), 10-Q (filing date: 2014-10-23), 10-Q (filing date: 2014-07-24), 10-Q (filing date: 2014-04-22).
The primary reason for the decrease in Return on Equity (ROE) over Q4 2018 is the decrease in profitability measured by Return on Assets (ROA).
Three-Component Disaggregation of ROE
Comcast Corp., decomposition of ROE (quarterly data)
Based on: 10-K (filing date: 2019-01-31), 10-Q (filing date: 2018-10-25), 10-Q (filing date: 2018-07-26), 10-Q (filing date: 2018-04-25), 10-K (filing date: 2018-01-31), 10-Q (filing date: 2017-10-26), 10-Q (filing date: 2017-07-27), 10-Q (filing date: 2017-04-27), 10-K (filing date: 2017-02-03), 10-Q (filing date: 2016-10-26), 10-Q (filing date: 2016-07-27), 10-Q (filing date: 2016-04-27), 10-K (filing date: 2016-02-05), 10-Q (filing date: 2015-10-27), 10-Q (filing date: 2015-07-23), 10-Q (filing date: 2015-05-04), 10-K (filing date: 2015-02-27), 10-Q (filing date: 2014-10-23), 10-Q (filing date: 2014-07-24), 10-Q (filing date: 2014-04-22).
The primary reason for the decrease in Return on Equity (ROE) over Q4 2018 is the decrease in profitability measured by Net Profit Margin.
Five-Component Disaggregation of ROE
Comcast Corp., decomposition of ROE (quarterly data)
Based on: 10-K (filing date: 2019-01-31), 10-Q (filing date: 2018-10-25), 10-Q (filing date: 2018-07-26), 10-Q (filing date: 2018-04-25), 10-K (filing date: 2018-01-31), 10-Q (filing date: 2017-10-26), 10-Q (filing date: 2017-07-27), 10-Q (filing date: 2017-04-27), 10-K (filing date: 2017-02-03), 10-Q (filing date: 2016-10-26), 10-Q (filing date: 2016-07-27), 10-Q (filing date: 2016-04-27), 10-K (filing date: 2016-02-05), 10-Q (filing date: 2015-10-27), 10-Q (filing date: 2015-07-23), 10-Q (filing date: 2015-05-04), 10-K (filing date: 2015-02-27), 10-Q (filing date: 2014-10-23), 10-Q (filing date: 2014-07-24), 10-Q (filing date: 2014-04-22).
The primary reason for the decrease in Return on Equity (ROE) over Q4 2018 is the decrease in effect of taxes measured by Tax Burden.
Two-Way Decomposition of ROA
Comcast Corp., decomposition of ROA (quarterly data)
Based on: 10-K (filing date: 2019-01-31), 10-Q (filing date: 2018-10-25), 10-Q (filing date: 2018-07-26), 10-Q (filing date: 2018-04-25), 10-K (filing date: 2018-01-31), 10-Q (filing date: 2017-10-26), 10-Q (filing date: 2017-07-27), 10-Q (filing date: 2017-04-27), 10-K (filing date: 2017-02-03), 10-Q (filing date: 2016-10-26), 10-Q (filing date: 2016-07-27), 10-Q (filing date: 2016-04-27), 10-K (filing date: 2016-02-05), 10-Q (filing date: 2015-10-27), 10-Q (filing date: 2015-07-23), 10-Q (filing date: 2015-05-04), 10-K (filing date: 2015-02-27), 10-Q (filing date: 2014-10-23), 10-Q (filing date: 2014-07-24), 10-Q (filing date: 2014-04-22).
The primary reason for the decrease in Return on Assets (ROA) over Q4 2018 is the decrease in profitability measured by Net Profit Margin.
Four-Way Decomposition of ROA
Comcast Corp., decomposition of ROA (quarterly data)
Based on: 10-K (filing date: 2019-01-31), 10-Q (filing date: 2018-10-25), 10-Q (filing date: 2018-07-26), 10-Q (filing date: 2018-04-25), 10-K (filing date: 2018-01-31), 10-Q (filing date: 2017-10-26), 10-Q (filing date: 2017-07-27), 10-Q (filing date: 2017-04-27), 10-K (filing date: 2017-02-03), 10-Q (filing date: 2016-10-26), 10-Q (filing date: 2016-07-27), 10-Q (filing date: 2016-04-27), 10-K (filing date: 2016-02-05), 10-Q (filing date: 2015-10-27), 10-Q (filing date: 2015-07-23), 10-Q (filing date: 2015-05-04), 10-K (filing date: 2015-02-27), 10-Q (filing date: 2014-10-23), 10-Q (filing date: 2014-07-24), 10-Q (filing date: 2014-04-22).
The primary reason for the decrease in Return on Assets (ROA) over Q4 2018 is the decrease in effect of taxes measured by Tax Burden.
Decomposition of Net Profit Margin
Comcast Corp., decomposition of Net Profit Margin (quarterly data)
Based on: 10-K (filing date: 2019-01-31), 10-Q (filing date: 2018-10-25), 10-Q (filing date: 2018-07-26), 10-Q (filing date: 2018-04-25), 10-K (filing date: 2018-01-31), 10-Q (filing date: 2017-10-26), 10-Q (filing date: 2017-07-27), 10-Q (filing date: 2017-04-27), 10-K (filing date: 2017-02-03), 10-Q (filing date: 2016-10-26), 10-Q (filing date: 2016-07-27), 10-Q (filing date: 2016-04-27), 10-K (filing date: 2016-02-05), 10-Q (filing date: 2015-10-27), 10-Q (filing date: 2015-07-23), 10-Q (filing date: 2015-05-04), 10-K (filing date: 2015-02-27), 10-Q (filing date: 2014-10-23), 10-Q (filing date: 2014-07-24), 10-Q (filing date: 2014-04-22).
The primary reason for the decrease in Net Profit Margin over Q4 2018 is the decrease in effect of taxes measured by Tax Burden.