I don't understand why Rule 610 from Reg NMS was introduced: what was the problem with locked markets? I have read that one of the issues is that it forced a market maker (say, from Nasdaq) who ...
I originally thought that you have an orderbook per stock and orders would be filled on the time at which they arrive. Arrive first and you get the best price and the qty in the orderbook is reduced ...
I heard that trading firms employ CEP platforms such as StreamBase, Marketcetera, JBoss Drools, and etc., to implement trading systems. I wonder which one is most popular and the recent trend of ...