Say some crazy fool bought to open one CNMFX contract yesterday... This says the delta is .0297 at yesterday's close... <A HREF="http://www.optionsxpress.com/quote_detail.asp?SESSIONID=&SYMBOL=.CNMFX" target="_blank">http://www.optionsxpress.com/quote_detail.asp?SESSIONID=&SYMBOL=.CNMFX</A> CNMFX bid yesterday at close was 45 cents CME currently trading up 30 points So, using yesterday's data, .0297 x 30 = .891 .891 + .45 = 1.34 << this should approximate opening bid, assuming IV remains the same? (it won't, I know, but trying to calculate an opening bid using pre-market data, lol)