On 10 May an investor sells a six-month put option on 1,000
shares of a stock. The current stock price $39 and the exercise
price of the put option is $40. The price of the put option is
$2.30 per share. At expiration date on 10 November, the stock price
is $36.90. The option is cash settled.
(a) What is the cash flow of the investor on 10 May?
(b) What is the payoff on the option on 10 November?
(c) What is the investor’s profit/loss on the option trade?
Payoff short put =MIN(stock price-strike price,0)*number of share
Profit/loss=(payoff+premium received)*number of shares
a)Cash flow of the investor on 10 May
Cashflow(premium received)=premium received*no.of shares
Cashflow(premium received)=$2.30*1000
Cashflow(premium received)=$2,300
b) Payoff on option on 10 november
Payoff short put option=MIN($36.90-$40)*1000
Payoff short put option=-3.10*1000
Payoff short put option=-$3,100
c)Profit/loss on option trade=(-3.10+2.30)*1000=-$800
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