The Globe and Mail reports in its Thursday edition that while General Motors has boosted profit by 51 per cent since its November, 2010, its stock has returned just 20 per cent, trailing the 127-per-cent gain for the Standard & Poor's 500 Index, David Einhorn, the president and co-founder of Greenlight Capital, wrote in slides posted to the hedge fund's website. A Bloomberg dispatch to The Globe reports that Mr. Einhorn wants to split GM's shares into two classes, with one collecting on the company's dividend and another capturing the value from its earnings. The dividend stock buyers would be entitled to the $1.52 a share a year GM pays out now (all figures U.S.). Mr. Einhorn says, "GM's dividend is not respected by the market." Creating a second class of shares would "unlock GM's value by forcing the market to appropriately value the dividend and give credit for GM's earnings potential." Mr. Einhorn says the two stocks together would be worth between $43 and $60 a share, boosting shareholder value by as much as $38-billion. Mr. Einhorn's proposal helped send GM's stock up 2.4 per cent, the biggest jump in six weeks, to close at $35.56 on Tuesday in New York trading.