Below is the expiry day trade taken.
Buy BN 24800 CE 600 Qty @ 57
Sell BN 24900 CE 1200 Qty @ 23
Buy BN 25000 CE 600 Qty @7
Net debit = 64-46 = 18*600 = 10.8K
Buy BN 24800 CE 600 Qty @ 57
Sell BN 24900 CE 1200 Qty @ 23
Buy BN 25000 CE 600 Qty @7
Net debit = 64-46 = 18*600 = 10.8K
Bn 24800 CE 600 Qty @ 126
BN 24900 CE 1200 Qty @ 40
BN 25000 CE 600 Qty @ 5
Credit = 131 - 80 = 51*600 = 30.6 K
Net profit = around 20 K