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system
when writing a covered call, what's the difference between a net debit and a net credit?
user
when you buy a stock and sell a covered call, the call can't be valued higher than the stock, right? how can a call on a $10 stock sell for more than the stock?  so, the initial position of a covered call will cost you something. the transaction is a debit  to you. the net amount of the deal, usually prices as per stock/option single share.  for the image showing net credit, it's as if you expect to get paid for you to take this deal.
assistant