Another image from the NYT adaptation of Michael Lewis’ new book ‘Flash Boys’. In the microseconds it takes a high-frequency trader — depicted in blue — to reach the various stock exchanges housed in these New Jersey towns, the conventional trader’s order, theoretically, makes it only as far as the red line. The time differences — now under investigation by New York’s attorney general — can be financially advantageous in a number of ways. Credit Graphic: CLEVERºFRANKE. Data source: IEX.