Founded in 1993 by brothers Tom and David Gardner, The Motley Fool helps millions of people attain financial freedom through our website, podcasts, books, newspaper column, radio show, and premium investing services. This quarter's 13F filings are out, revealing what many top hedge funds bought and sold last quarter, ended Dec. 31. 13Fs are always interesting, and while they shouldn't necessarily guide your investment decisions, they are potential sources of new ideas. Of the myriad hedge funds out there, I respect and follow each of the following funds and family offices.