Quote from LoosenUp:
Aren't SPX and NDX options pit traded? Why is it that they are tradeable in Interactive Brokers? Are they both pit and electronically traded? If yes, are we getting the best available spreads by trading through IB or is it possible to get better spreads if one uses other brokers with pit access? Sorry for these elementary questions.
For NDX options, we have a choice of AMEX,CBOE, ISE and SMART. Should we trade through SMART all the time since it will give the best available quotes from all 3 exchanges, right? Are trades from all three exchanges interchangeable(fungible)? That is, can a buy from AMEX offset against a sell of a same contract in ISE or SMART?
Thanks for answers.