April 30th, 2009, 6:22 pm
Hi,I am also looking for historical option prices and would appreciate if somebody could tell me their experience. Here are the requirements:1. minimum SPX for 10 years, other index or stock options or longer periods would be nice to have2. at least one quote per day3. option prices (bid/ask, not last trade or previous close) and underlying (bid/ask) need to be sampled at the same time because4. I want to compute implied volatilities from these data using various models5. I do not want to get implied volatility data delivered, but rather the raw data themselves6. a cheap license for academic use would be nice to try things out, but then commercial use ought to be possibleWhich data source have you been using? Can you say whether your data are good enough for 3./4. above?Thanks in advance for your comments and suggestions.Schubidu