Could someone please explain to me why the Last Price and the Bid/Ask Prices are extremely different sometimes? For example I pulled up a quote on cboe for UCQCA (Mar '01 105 Call for JDSU). It says the last sale is 12.125. The Bid/Ask prices are 18.5 & 19.25 respectively. On the other hand, I looked up the same quote at eDreyfus and it said the last sale was 19. Bid/Ask were 18.875 and 19.375. This seems better, but there is a small difference between Bid/Ask prices. I would think that cboe would be fairly accurate, but I don't know which numbers to use now. If I wanted to set up a hypothetical portfolio and paper trade this option what would I use as a purchase price/sell prices? Thanks Buckwheat
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