Here we are talking about support resistance range which can be easily found with the help of stock options open interest, but there is one limitation for this strategy, it is applicable only for those stocks who’s option contracts are very liquid, like Reliance, State bank of India, ICICI Bank, Tata Steel, Chambal fertilizer, NTPC, Infosys, TCS, JP Associate, Unitech, Suzlon, IDFC, Larsen & Toubro, M&M, Tata Motors, HUL, Hindalco and Bharti Airtel. These are some of the stocks which have very liquid option contracts, so this strategy will work very well in these stocks. First of all, find call option which has highest open interest among the all call option, the strike price of that call options will be resistance or higher range for that stock. Now get that put option which has highest open interest in all available put option, strike price level of that put options will act as support level or we can say it will be lower end of range. Let us take an example: Reliance 900 call option has highest open interest, so 900 is resistance level or upper range in short term, also reliance 840 put option has highest open interest among all put option so 840 level will be support level or lower range for short term.