Nifty Open Interest Chart
Currently 5200PE option writers again raise their hands against the 5400CE. Last two days there is big fight between the 5200PE writers and 5400CE writers as there is a equal amount of open interest built up in both these option strike price. Finally there is a reduction in 5400CE open interest and a considerable amount of increase in 5200PE open interest indicating that 5200 will be once again the Support zone for the current option series.
can you tell me why there is always a difference in implied volatility between option oracle & NSE site