It’s the oil crash few saw coming, and few have been spared as it erased $1.3 trillion, the equivalent of Mexico’s annual GDP, in little more than a year. Take billionaire Carl Icahn. When crude was at its peak in June 2014, the activist investor’s stake in Chesapeake Energy Corp. was worth almost $2 billion. Today, oil has lost more than half its value, Chesapeake is the worst performer in the Standard & Poor’s 500 Index and Icahn has a paper loss of $1.3 billion. The S&P 500, by contrast, is up 6.9 percent in that time. State pension funds and insurance companies have also been hard hit. Investment advisers, who manage the mutual funds and exchange-traded products that are staples of many retirement plans, had $1.8 trillion tied to energy stocks in June 2014, according to data compiled by Bloomberg. “The hit has been huge,” said Chris Beck, […]