I was not o on the floor in the 1970's but the PHLX started around the same time as the CBOE. I was only commenting on what happened in the late 80's to the 2000's. BOth of our observations are correct, and I am 100% sure there were no hand helds and liquid underlying for the equity options in the 70's.Quote from dmo:
Xflat - maybe the fact that Philly started later than the CBOE actually gave it an edge - in that traders there "grew up" with the underlying readily available. When the CBOE started in the 70's, doing the underlying was a pain and as a result the culture and trading style there developed around option-only spreads.
I've noticed that the few times I've met and talked options with equity options traders from Philly, I was surprised that they see options very much the same way as Chicago futures-options traders. It struck me, because I always notice a big difference in the culture and option trading style of CBOE guys vs CBOT.
Either way its my opinion you always offer excellent answers and advice here.
thnx