I'm sure [this pdf][1] will help you to understand what's lying beyond CDX.NA.IG and HY

As for the more info (from the link: @Alexander) iTraxx is product made by Deutsche Bank [1]: https://www.google.ru/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwjl5u-zxpXTAhXjYZoKHU0yDf0QFggpMAE&url=https%3A%2F%2Fwww.markit.com%2FNewsInformation%2FNewsAnnouncementsFile%3FCMSID%3Df54b077c3a044773819dc8ccaf1afc6e&usg=AFQjCNEgmdk0rbdwA7K7_Igqo8w1L2H8QQ

I'm sure this pdf will help you to understand what's lying beyond CDX.NA.IG and HY

As for the more info (from the link: @Alexander) iTraxx is product made by Deutsche Bank