UPDATE: Knight Capital's (KCG) CEO Joyce: 'We're Doing Our Own Internal Investigation' - CNBC

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KCG HOLDINGS, Inc. (NYSE: KCG) Delayed: 20.00 --0 (-0%)
Previous Close $20.00    52 Week High $15.70 
Open $4.86    52 Week Low $10.03 
Day High $20.00    P/E 13.51 
Day Low $20.00    EPS $1.48 
Volume 520