Quote from takeshi:
This is what my broker posted... I have no idea what it means. Can someone dissect this for me? Thanks.
100% * option market value + maximum (((20% * underlying market value) - out of the money amount), 10% * underlying market value, $250 * number of contracts). 20% above is 15% for broad based index options. Short sale proceeds are applied to cash.
Suppose,
Stock = $42
Sell Naked May 45 Calls at $0.50
And Stock =$42
Sell Naked May 40 Calls at $2.50
What are my margins requirement?
Ok Now you are talking about two calls that are both naked.
I am sure that from that 20% your broker is not Ameritrade and by the way they have a bug in their naked call calculation that have not fixed it yet.
For Naked May 45 call you will need:
%20 of 42=8.4 - Out of the money =(45-42) + 0.5=5.9
%10 of 42 +0.5=4.7
So the maximum of 590 , 420 and 250+50 for one contract will be 590
so if you sell 10 contracts you will need 5900 to do this transaction
That $50 is option price that will be variable and the money that you get from selling stocks will be deposited into your account as cash
For the second case:
%20 of 42=8.4 -out of the money (40-40) +2.5=12.70
%10 of 42 =4.2 +2.5=6.70
so the maximumof 12.70, 420 and 250+250 is 1270 and for 10 contacts you will need 12700.
Again the money that you get by selling the stock will be deposited into your account as cash but the latest option price will be used to calculate your margin requirements.
Please let me know if you do not understand it.