5100 call
bot at 30 sold at 42
42-30 = 12 -1 = 11
5100-5000 call spread cost
6 - 11 = -5
nifty calculation
bought at 4857, covered at 4863, points gained 6, -2 as brokerage, net gain of 4 points
bought at 4857, covered at 4863, points gained 6, -2 as brokerage, net gain of 4 points
bought at 4921, covered at 4933, points gained 12, -2 as brokerage, net gain of 10 points
bought at 4921, covered at 4933, points gained 12, -2 as brokerage, net gain of 10 points
sold at 4923, covered at 4915, points gained 8, -2 as brokerage, net gain of 6 points
sold at 4923, covered at 4921, points gained 2, -2 as brokerage, net gain of 0 points
sold at 4923, covered at 4921, points gained 2, -2 as brokerage, net gain of 0 points