The Fattest Finger EverPosted May 6, 2010 by Joshua M Brown High Frequency Trading, Algorithmic Trading, Fat Finger Errors. Call it whatever you want, we just saw the largest intraday point drop in Dow Jones history, a drop of 998.5 this afternoon. We closed higher, but I’m disgusted. Now go talk about it. facebook twitter linkedin Read this next.May 19, 2016 “Give ’em what they want”August 9, 2011 Wet n' WildMay 10, 2010 Fat Finger Trader Identified!