ATM = At the moneyITM = In the moneyOTM= Out of the moneyFor CE side , If nifty is trending at 17525 ATM = 17500ITM = 17450/400/350/300OTM = 17550/600/650/700iFor PE side , if nifty is trending at 17525ATM = 17500ITM = 17550/600/650/700OTM= 17450/400/350/300