These market caps assume great importance in light of our proprietary
AssetCharts Sectoral Breakout methodology of trading. The weightings of the
top three airlines in the North American airline sector determine their
position in the AssetCharts North American Airline Quad Chart-Set.
Data for most companies was obtained from CompaniesMarketCap.com
[1]. Large
but unlisted airlines include the likes of Emirates Airline and
Qatar Airways.