Tyler Durden stays on the high-frequency trading case and says that when Citigroup (NYSE:C),...Jul. 22, 2009 12:04 PM ETCitigroup Inc. (C) StockBAC, C, FCNCABy: Jason Aycock, SA News Editor2 Comments Tyler Durden stays on the high-frequency trading case and says that when Citigroup (NYSE:C), Bank of America (NYSE:BAC) and CIT Group (NYSE:CIT) combined make up 10% of all equity volume, it's called churn. Recommended For YouAbout C StockSymbolLast Price% Chg1D5D1M6M1Y5Y10YMarket CapPEYield (TTM)Rev Growth (YoY)Prev. CloseCompare to PeersRelated StocksSymbolLast Price% ChgC--Citigroup Inc.Trending AnalysisTrending News