High-frequency trading gives players the edge on JSE. A FIFTH of the JSE’s equity activity came from high-frequency computerised trading earlier this week, CEO Nicky Newton-King says. When the JSE launched its co-location centre in May, it accounted for about 5% of equity activity. In the past month co-location activity had accounted for 18%-20% of the JSE’s equity trading, Ms Newton-King said. SEC Likely Won’t Enact Stand-Alone High-Frequency Trading Rules. ...