Are there ANY significant rules that differ between the AMEX and NYSE? Hybrid rules, market order rules, Limit On Open rules, etc.. ?
You can't be on both sides of the market at the same time. Computers can't auto enter orders without intervention by a trader.....and a few other ridiculous things.
the main rule at the amex is that the floor will do anything they want with the few orders they get and then wonder why no one wants to trade there any more.