What's the last date I can post this to to arrive in time for Christmas? http://thumbzilla.fun thumbzilla.com The source familiar with the matter said "Hedge Fund A" isCitadel, the Chicago-based firm founded by Kenneth Griffin.Citadel managed roughly $13.3 billion at the end of 2012,according to a regulatory filing. Citadel was one of severalhedge funds subpoenaed by federal authorities in 2010 as part ofthe government's broader insider trading investigation.