First off, great site - been lurking for a while. I have a question please and hope it is easy to answer. If I shorted 500 contracts of YHOO May 14 put at $1 that would be an purchase of $50,000. I get that. I understand the CBOE has margin requirements for options etc - but realistically if you trade with a firm like Etrade for example.... How much cash would you need to have in your account to make this naked put trade? If you had only $55,000 for example in your account could you make the trade. Thanks!