News for hackers. Stuff that matters.
Re:Banning Some HFT Strategies Helped This Market Grow: Chart by minimax on Tuesday March 08, 2016 @10:40AM (#11245849)
Basically in their rulebook it says that all prop (as opposed to agency) flow must be passive, and if they find aggressive prop flow from a member they can terminate the membership.

The tie in to IEX is tenuous at best.

Re:Banning Some HFT Strategies Helped This Market Grow: Chart by randomname2 on Tuesday March 08, 2016 @12:18PM (#11246679)