Hey guys. Which online or stand alone soft can you propose to calculate Profit/Loss on any given date before expiration if purchase price and purchase date for given option are known and they are in the past? Optionprofitcalculator.com is very helpful but it can only model if you buy option today. To illustrate what I mean. For example, I hold MSFT call 32 with expiration January 19, 2013. I bought it on April 25 2012 for 200. How can I calculate/model P/L of my position if on November 1, 2012 stock price would be 25 and I want to sell it? Thanks.