Thieves stole an estimated $20 million in assets from the Santa Monica home of Jeffrey Gundlach, CEO of DoubleLine Capital LP last week. Gundlach is now offering a $200,000 reward for the safe return of the stolen items, which include irreplaceable fine art and a Porsche.Gundlach, a leading expert in mortgage-backed securities and bond investing, came back from the Bloomberg Markets 50 Summit in New York to find blank spaces on the walls of his beach town home, the Associated Press reports.