Kenneth Fisher, the billionaire leader of Fisher Asset Manager, joined other top money managers in submitting documentation to the U.S. Securities and Exchange Commission (SEC) detailing his fund's investment activity for Q1 earlier this month. The documents were part of a 13F filing, required of all hedge funds managing at least $100 million in assets under management. According to Fisher's 13F, his portfolio increased by more than 7% over the first three months of the year, from a value of $76.56 billion to $81.96 billion.