Market Statistics for Open Interest

Discussion in 'Options' started by c.chugani, Aug 19, 2008.

  1. Does anyone know where can I find historical open interest values for all the strike prices for an (expired) option contract?

    Say for example, I want to find out the amount of open interest that was present in every strike price - for both puts and calls - at the end of March 2004 expiration week on the SPY etf.

    Where can I find such info? Is there an online database I can refer to?

    Thanks for in advance!