Option chain indicates there is a short position in bank nifty we can see a short buildup in call side and long buildup in put side as per oi data the strong support level is 20500. if bank nifty breaks 21000 level breaks target is up to - 20730 (21000 level is very important level) strong oi-support is 20500 strong res-23000
RSI also indicates short position (48.92) MACD also indicate for short position reason for falling (extension of the moratorium) and corona virus fear...
Please do ur own analysis before trade. This is only for education purpose.