I have NO background as a basis for this, but I've idly speculated about the following: 1) Put the markets (the trading boards) on a stepped clock, with relat

I have NO background as a basis for this, but I've idly speculated about the following: 1) Put the markets (the trading boards) on a stepped clock, with relatively large intervals with respect to processing speed. 2) For each interval, randomize the processing of queued work items (i.e. orders). I suppose regulations, or something, would be needed to bridle potentially competitive trading opportunities (meaning, environments, including private, off-board transactions).