Every quarter, I sift through a list of thirty billionaire asset managers and their holdings, uncovering the biggest similarities and differences that might be ripe for in-depth study. All the favorites are on my list: Warren Buffett, George Soros and Carl Icahn are some of the more notable names. Big earners like David Einhorn, Stanley Druckenmiller and Donald Yacktman add extra weight to the group, joining twenty-four others who have...