This Milwaukee-based outfit is the largest mortgage insurer in the U.S., with more than $165 billion in insured loans. The firm, with $1.5 billion in annual sales, insures lenders against higher default rates on homes purchased with less than a 20 percent down payment. The end of the housing boom has eaten into MGIC's sales and earnings growth, and the company may take a hit as more homeowners default. But as long as unemployment doesn't spike, Jesko says mortgage defaults should remain under control. And once the real estate market stabilizes, premium income will start growing again. The stock sells for a little more than book value. Reinhart figures shares could climb 56 percent to their $95 per share PMV.