Voices

Some Facebook Underwriters Helped Short Sellers

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.

Voices

Return of Day Traders Drives Rise in Volume

Even as mom-and-pop investors sit out the rally, short-term players–including some classic individual day traders–appear to be making a comeback. Trading volume surged 14 percent or more last month from July at online brokerage firms Charles Schwab Corp., TD Ameritrade Holding Corp. and E*Trade Financial Corp. Electronic trader Knight Capital Group Inc. also posted a 7.7 percent increase.