NIFTY total Open Interest (OI) provides the total number of outstanding contracts that have not been settled for a future and Options or a Stock for the upcoming expiry date for all the strike provides in a multi line chart format. This chart gives clear view of the trend as all the strike prices including At the money, closer in the money and closer to out of the money so that Trader can decide whether calls have been added more or calls have been added more and trader can follow the trend based on this. It means total number of lots that have been written for all the strike prices of an index or a stock up to date. Here, we provide the number of total lots ((Nifty it is 50 for lot and BankNifty it is 25 per lot that have been added for all the strike prices of NIFTY till date. It may help you to analyse the trend of the index or stock. If more calls are written then it is bearish. If more puts are written it is bullish. If puts and calls are having equal number at multi strike for NIFTY it is called short straddle hence most likely NIFTY may not be volililte for the current expiry. Even if it makes big moves it so happens that both call and put strike price may lose value. NIFTY intraday OI change provides human readable charts so that traders can make decisions easily. If NIFTY 36000 puts are 33,000 lots of contracts are written and only 2000 calls are added then 36000 may act as support. If more number puts than calls means it the strike price may act as resistance. Please check out NiftyOIData for OI related data. You can click on the strike prices below the chart to include/exclude in chart.