In: Finance
If you pay $4 for a call option on JPM stock with an at the money strike price of $100 and at the same time you write a call option with a strike price of $110 for which you receive $1; how much money do you make or lose on the transaction if the stock goes to either $120; $105; or $90?
A long call option will be exercised if the strike price < stock price.
A short call option will be exercised by the buyer if the strike price < stock price.
If the stock goes to $120
The $100 call option will be exercised by you.
Profit = stock price - strike price - premium paid
Profit = $120 - $100 - $4 = $16
The $110 call option will be exercised by the buyer.
Profit = strike price - stock price + premium received
Profit = $110 - $120 + $1 = -$9
Profit on transaction = $16 - $9 = $7
If the stock goes to $105
The $100 call option will be exercised by you.
Profit = stock price - strike price - premium paid
Profit = $105 - $100 - $4 = $1
The $110 call option will not be exercised by the buyer.
Profit = premium received
Profit = $1
Profit on transaction = $1 + $1 = $2
If the stock goes to $90
The $100 call option will not be exercised by you.
Profit = zero - premium paid
Profit = $0 - $4 = -$4
The $110 call option will not be exercised by the buyer.
Profit = premium received
Profit = $1
Profit on transaction = -$4 + $1 = -$3