Billionaire investor Carl Icahn reported on Friday that he now owns 12.12% of auto parts company Pep Boys-Manny, Moe & Jack, which agreed to sell itself to Bridgestone in October, and said its retail automotive parts segment would be a perfect fit for rival Auto Plus. Icahn began buying the shares in late November and now owns 6.55 million shares, making him the second largest owner after Mario Gabelli's Gabelli Funds, a regulatory filing shows.