Comcast Corp. (CMCSA)

Comcast Corp., ROA, long-term trends, calculation

	ROA	=	100	×	Net income attributable to Comcast Corporation1	÷	Total assets1
Dec 31, 2005		=	100	×		÷
Dec 31, 2006		=	100	×		÷
Dec 31, 2007		=	100	×		÷
Dec 31, 2008		=	100	×		÷
Dec 31, 2009		=	100	×		÷
Dec 31, 2010		=	100	×		÷
Dec 31, 2011		=	100	×		÷
Dec 31, 2012		=	100	×		÷
Dec 31, 2013		=	100	×		÷
Dec 31, 2014		=	100	×		÷
Dec 31, 2015		=	100	×		÷
Dec 31, 2016		=	100	×		÷
Dec 31, 2017		=	100	×		÷
Dec 31, 2018		=	100	×		÷

Based on: 10-K (filing date: 2006-02-22), 10-K (filing date: 2007-02-26), 10-K (filing date: 2008-02-20), 10-K (filing date: 2009-02-20), 10-K (filing date: 2010-02-23), 10-K (filing date: 2011-02-25), 10-K (filing date: 2012-02-23), 10-K (filing date: 2013-02-21), 10-K (filing date: 2014-02-12), 10-K (filing date: 2015-02-27), 10-K (filing date: 2016-02-05), 10-K (filing date: 2017-02-03), 10-K (filing date: 2018-01-31), 10-K (filing date: 2019-01-31).

¹ USD $ in millions

Comcast Corp., ROA, long-term trends, comparison to competitors

	Comcast Corp.	Charter Communications Inc.	Twenty-First Century Fox Inc.	Walt Disney Co.
Dec 31, 2005
Dec 31, 2006
Dec 31, 2007
Dec 31, 2008
Dec 31, 2009
Dec 31, 2010
Dec 31, 2011
Dec 31, 2012
Dec 31, 2013
Dec 31, 2014
Dec 31, 2015
Dec 31, 2016
Dec 31, 2017
Dec 31, 2018

Based on: 10-K (filing date: 2006-02-22), 10-K (filing date: 2007-02-26), 10-K (filing date: 2008-02-20), 10-K (filing date: 2009-02-20), 10-K (filing date: 2010-02-23), 10-K (filing date: 2011-02-25), 10-K (filing date: 2012-02-23), 10-K (filing date: 2013-02-21), 10-K (filing date: 2014-02-12), 10-K (filing date: 2015-02-27), 10-K (filing date: 2016-02-05), 10-K (filing date: 2017-02-03), 10-K (filing date: 2018-01-31), 10-K (filing date: 2019-01-31).

Comcast Corp., ROA, long-term trends, comparison to Media sector

	Comcast Corp.	Media
Dec 31, 2005
Dec 31, 2006
Dec 31, 2007
Dec 31, 2008
Dec 31, 2009
Dec 31, 2010
Dec 31, 2011
Dec 31, 2012
Dec 31, 2013
Dec 31, 2014
Dec 31, 2015
Dec 31, 2016
Dec 31, 2017
Dec 31, 2018

Based on: 10-K (filing date: 2006-02-22), 10-K (filing date: 2007-02-26), 10-K (filing date: 2008-02-20), 10-K (filing date: 2009-02-20), 10-K (filing date: 2010-02-23), 10-K (filing date: 2011-02-25), 10-K (filing date: 2012-02-23), 10-K (filing date: 2013-02-21), 10-K (filing date: 2014-02-12), 10-K (filing date: 2015-02-27), 10-K (filing date: 2016-02-05), 10-K (filing date: 2017-02-03), 10-K (filing date: 2018-01-31), 10-K (filing date: 2019-01-31).

Comcast Corp., ROA, long-term trends, comparison to Consumer Services industry

	Comcast Corp.	Consumer Services
Dec 31, 2005
Dec 31, 2006
Dec 31, 2007
Dec 31, 2008
Dec 31, 2009
Dec 31, 2010
Dec 31, 2011
Dec 31, 2012
Dec 31, 2013
Dec 31, 2014
Dec 31, 2015
Dec 31, 2016
Dec 31, 2017
Dec 31, 2018

Based on: 10-K (filing date: 2006-02-22), 10-K (filing date: 2007-02-26), 10-K (filing date: 2008-02-20), 10-K (filing date: 2009-02-20), 10-K (filing date: 2010-02-23), 10-K (filing date: 2011-02-25), 10-K (filing date: 2012-02-23), 10-K (filing date: 2013-02-21), 10-K (filing date: 2014-02-12), 10-K (filing date: 2015-02-27), 10-K (filing date: 2016-02-05), 10-K (filing date: 2017-02-03), 10-K (filing date: 2018-01-31), 10-K (filing date: 2019-01-31).