A combination of long and short positions in financial instruments, in order to mimic the the risk/ reward profile of...

A call option on a call option. It gives the holder the right, without the obligation, to purchase a call...

A call option on a call option. It gives the holder the right, without the obligation, to purchase a call...

A put option on a call option. It gives the holder the right, without the obligation, to sell a call...