Quote from joe_blo:
Actually, the "SOES Bandits" of old used SOES, which could only be used to pay spreads. There were no "hidden" orders (or ECNs for that matter).
Right, I was referring to the "going between the markets" on the Small Order Entry System to attempt to pick off the market makers with those wide spreads. SOES was "interesting" - didn't last too long, but showed how quickly markets can adapt (SoesBusters software, etc.).
Don