As traders at Morgan Stanley were frantically trying to shore up Facebook Inc.'s share price following the company's initial public offering, other managers on the deal were helping short sellers bet that the newly minted stock would fall.Trading desks at Goldman Sachs Group Inc. and J.P. Morgan Chase & Co., two of the firms that helped Morgan Stanley underwrite the IPO, were among those lending out Facebook shares that hedge funds needed for short sales, according to people familiar with the matter.The role of the firms in enabling short sellers in Facebook's stock shines a light on a long-standing Wall Street business that has the potential to create conflicts of interest. Even as one arm of a brokerage firm is getting paid to drum up ... Continue reading →