UPDATE: Knight Capital Q4 Profit Down 84%

Knight Capital Group KCG reported an 84% decline in its Q4 profit. Knight Capital's quarterly profit dropped to $6.5 million, versus $40.2 million, in the year-ago period. Its per-share earnings fell to a penny versus $0.43, compared to analysts' estimates of $0.03 per share. Its revenue declined 16% to $287.7 million. Knight Capital shares closed at $3.69 yesterday.