In the video below, Fool analyst Blake Bos takes a look at three of the world's biggest investing powerhouses and talks about what they're buying today. He discusses the sovereign wealth fund Qatar Holdings and its move to increase its stake in Tiffany's (NYSE:TIF) by $172 million, updates investors on the continuing soap opera battle over Herbalife (NYSE:HLF), and, of course, takes us through what Warren Buffett is buying at the moment.

Blake Bos has no position in any stocks mentioned. The Motley Fool has the following options on Herbalife: long Jan. 2014 $50 calls. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.