Comment on SPAN Calculator
Sagar,
Assume when you shorted 6000 CE, the value was Rs 100. Yes you need only 8932 for shorting this option.
At 3.20pm, all MIS positions get squared off, so if the value of the premium then is 90, you make a profit of Rs 10x 50 = Rs 500 or if the premium is 100, you make a loss of Rs 10 x 50 =Rs500. There is no premium credited to your trading account.
So if you shorted at 60 and at 3.20 it was covered at 80, you would have made a loss of Rs 20 x 50 = Rs 1000.