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    Bank Nifty option closing Price

    Hello, I bought Bank Nifty option contract on 30/04/2019, 2 lots 29200 PE @ 4.90 expiring on 02/05/2019 for a total of Rs 196. This morning when market opened up. I see the P&L of over Rs 700 (I closed it later with a loss of Rs 725). Could you please explain the logic behind it. I took the...