If you are serious about trading options you must know
these relationships by heart. If you have to stop to
think about any of them you don't know them well enough.
Shorting Stock and Selling a Put
is a Short Call Buying Stock and Selling a Call
is the same as Selling a Put Buying a Put and Selling a Call
is the same as Shorting Stock Buying Stock and Buying a Put
is the same as Buying a Call Shorting Stock and Buying a Call
is the same as Buying a Put Buying a Call and Selling a Put
is the same as Buying Stock