"IEX Group is a "balanced exchange" with built-in mechanisms to deter high frequencey traders looking to manipulate the system." A quote from a National Post article today about a Canadian who was working in New York for RBC when he developed THOR software. He now uses it at IEX, an exchange he founded along with others. It launched on Oct. 25 and trading volumes have grown to 40 million shares per day. The article also mentions that the FBI is probing whether HFT firms violate U.S. laws by acting on non-public information to gain an edge over competitors. Progress.......