I looked up the margin requirements for NQ and it said $3,200 per contract. I thought this was set by the exchange and your broker could add to the requirement if they wanted to. However on other websites, i've found smaller margin requirements for the nq. Example, OEC says the margin requirement is $2,500 with a day of $500. What do that mean? $2,500 margin and $500 maintenance? On mirus futures they say it is typically $500 per contract? wtf? The impression I was under is that it costs $3,200 for one contract, of which every point=$20. What am i missing?