They own alot, but I don't think they own any of the AP. Here are a few companies they own: 20th Century Fox, FOX, FX, Speed Channel, National Geographic Channel, DirectTV, The Sun, The Times, a ton of Austrailian Newspapers, New York Post, HarperCollins Publishers, ign.com (thats gamespy and all that),
http://www.newscorp.com/operations/