Omega reported a position of about 15 million shares in SLM Corp (NASDAQ:SLM), or “Sallie Mae.” Markets are valuing the education lender fairly conservatively, with the stock currently trading at 10 times forward earnings estimates (this is with Wall Street analyst consensus calling for a decline in earnings per share in 2014). Sallie Mae has seen increased revenue and earnings, though some investors are worrying about potential delinquencies in the market. D.E. Shaw, a hedge fund managed by billionaire David Shaw, is another filer on our database which has a large position in the stock (check out more stocks D.E. Shaw owns).