• Deal keeps the embattled leader in U.S. market-making for equities in business, but comes at a huge cost to existing shareholders. Knight shares fell 25% to $3.04 in morning trade.

    LAST UPDATE : Aug 20, 2012, 6:18 PM EDT
  • Unusually high volume ripped through the New York Stock Exchange in early trading on Wednesday, the latest high-profile mishap to damage investor confidence in public markets.

    LAST UPDATE : Aug 20, 2012, 3:40 PM EDT
  • Facebook Inc's shares slid 6.2% to another record low on Tuesday, diving for the third straight day since lackluster results showed decelerating user growth and revived doubts about its ability to sustain its rich valuation. A sobering report from Bernstein Research, combined with online chatter about the potential proliferation of automated Facebook accounts and a looming sell-off of employee shares conspired to rock the stock.

    LAST UPDATE : Aug 20, 2012, 2:40 PM EDT