As we have written both the options, we have sold them and as
the strike price 150 each then it is a short straddle strategy. Had
the strike price been different, then it would have been a short
strangle all other things remaining the same.
Following is the graph of the short straddle:
To plot the above graph we have taken the following data points
as shown in the below table:
Short Call |
Short Put |
Spot price |
Exercise price |
Premium |
Spot price |
Exercise price |
Premium |
|
150 |
8 |
|
150 |
6 |
|
Payoff |
Profit |
|
Payoff |
Profit |
140 |
0 |
8 |
140 |
-10 |
-4 |
141 |
0 |
8 |
141 |
-9 |
-3 |
142 |
0 |
8 |
142 |
-8 |
-2 |
143 |
0 |
8 |
143 |
-7 |
-1 |
144 |
0 |
8 |
144 |
-6 |
0 |
145 |
0 |
8 |
145 |
-5 |
1 |
146 |
0 |
8 |
146 |
-4 |
2 |
147 |
0 |
8 |
147 |
-3 |
3 |
148 |
0 |
8 |
148 |
-2 |
4 |
149 |
0 |
8 |
149 |
-1 |
5 |
150 |
0 |
8 |
150 |
0 |
6 |
151 |
-1 |
7 |
151 |
0 |
6 |
152 |
-2 |
6 |
152 |
0 |
6 |
153 |
-3 |
5 |
153 |
0 |
6 |
154 |
-4 |
4 |
154 |
0 |
6 |
155 |
-5 |
3 |
155 |
0 |
6 |
156 |
-6 |
2 |
156 |
0 |
6 |
157 |
-7 |
1 |
157 |
0 |
6 |
158 |
-8 |
0 |
158 |
0 |
6 |
159 |
-9 |
-1 |
159 |
0 |
6 |
160 |
-10 |
-2 |
160 |
0 |
6 |
161 |
-11 |
-3 |
161 |
0 |
6 |
Let us understand the situation:
- Writing both options means we are short on both them
- This implies that we have received the premium amount of
them
- Now lets look at the short call option:
- exercise price is 150 and premium receive is 8
- Call option gives the buyer the right to buy the underlying at
the strike price
- This will only happen when the current price or the spot price
in the market is higher than the exercise price, so that the buyer
is able to buy the underlying at the exercise price and sell it in
the open market at a higher price
- when this situation arises, the seller of the option has no
option but to fulfill the contract
- So his loss is the difference between the spot price and the
exercise price as shown in the payoff column
- but some of this loss is recovered from the premium received
which is the final profit/loss
- When the spot price is lower than the exercise price, the call
option wont be exercised and the entire premium received is a
profit to the seller while his payoff is 0
- Now lets look at the short put option:
- exercise price is 150 and premium received is 6
- Put option gives the buyer the right to sell the underlying at
the strike price
- This will only happen when the current price or the spot price
in the market is lower than the exercise price, so that the buyer
is able to sell the underlying at the exercise price and reduce his
loss
- when this situation arises, the seller of the option has no
option but to fulfill the contract
- So his loss is the difference between the spot price and the
exercise price as shown in the payoff column
- but some of this loss is recovered from the premium received
which is the final profit/loss
- When the spot price is higher than the exercise price, the put
option wont be exercised and the entire premium received is a
profit to the seller while his payoff is 0
- Above graph is showing the payoffs of each option being
plotted