Dont you need to borrow funds for an option call?
Originally Posted by dilbert firestorm
You don't need to borrow to buy a call option.
You also don't need to borrow money if you sell a covered call.
Here's an example, that might help you understand what Vitaman's doing. You, Dilbert, own Exxon stock. The price is $69 per share. You sell March 18, 2022 calls to Vitaman at a 75 strike price. Vitaman pays you $7.80 per share for the options up front which you pocket. This is called a "covered" call, because you own the Exxon stock.
Come March 18, if the price of Exxon closes below $75, you walk away with the $7.80 premium and Vitaman is left with nothing. Sweet deal, huh?
On the other hand, say Iran blocks the straits of Hormuz and the price of Exxon Stock shoots up to $150 per share on March 18. Then you have to fork over your Exxon stock to Vitaman, and he has to pay you $75. Then Vitaman instantaneously turns around and sells the Exxon stock for $150. Basically he paid $7.80 premium for the option, and now he's going to pocket a profit of $75 per share ($150 - $75), less the $7.80. So Vitaman has a return of about 9:1 on his investment of $7.80 per share.
I've simplified things here by the way. Probably Vitaman will liquidate his call in the market before expiration date, booking a a hefty profit, instead of actually exercising the option. But maybe not.
Getting back to your question, if you sold a "naked call", that is, if you sold the Exxon call options but didn't own Exxon stock, then you'd have to maintain enough margin in your account to guarantee the broker and the clearing entity that you could buy the Exxon stock on March 18 to be able to deliver to Vitaman. And if you didn't have enough cash in your account to meet the margin, then I believe your broker would loan the money to you, using your stock positions as collateral, and charge you interest.