Coz Mabluda Thursday, 12/27/18 10:14:51 AM Re: EdF post# 330854 Post # of 341730 Ed, not necessarily. Explain why, at times, the price of the call option goes up while the PPS of the underlying goes down. I've been following the $95.50 call strikes for MSFT. See for yourself. Plug in MSFT & watch as the PPS of the underlying goes up & down, then watch the option prices change accordingly. Option prices go up when they should be going down, then they go down when they should be going up, then they move in the correct direction that the PPS of the underlying calls for. Most perplexing. I'm using MarketWatch's option chain.