Hello, I was hoping somebody could throw some light on an issue I have been wondering about. Is there any way of using options data such as put/call ratios, open interest or other things to predict the future price of the underlying? I appreciate it will never be an exact science, but I am sure I have read about this somewhere. The thinking goes that due to the leverage options give, and that a lot of big players primarily use options in their preparatory trading activities (eg Hull/Goldman Sachs et al), understanding what side of the market the money is on could be of help coming up to expiration, as these traders will sell/buy the underlying to the death in order to keep the options In The Money. Is there any merrit in this line of thought? What should I (we) be looking at? Thanks in advance for any insight. ST.