Quote from ds2:
well its looks like the contracts trade high, which im confused by. i run the theorical data and look at it on ameritrade, and it seems the contracts are 3-4X! they do expire worthless if under the strike, why would they trade so high?? on the SPX , the 1410 puts opened trading around .50 a contract with 2 days left for expiration! the SPX had to drop like close to 18 points ,, thats too expensive for a drastic move like that
This question is a non sequitur--there's no such thing as a "theoretical value" unless you know the Volatility of the stock. Volatility for the purposes of options has very little to do with the historical volatility. Dividends, volatility skewing, exercise style, earnings, supply and demand, and a dozen other factors can all change the shape of the IV curve.Quote from ds2:
ive recently started following the weeklys on the spx and oex. do they always trade way above their theoretical value? thx

Quote from ds2:
do any of you option traders, follow/trade the weeklys? volume seems pretty low. $spx.x is symbol on ameritrade