Quote from donnap:
Your answer is incorrect. The 3rd post in this thread had a correct breakdown.
You do realize that if you match one long put with the stock for the synthetic call - there is only one long put left.
Donna
You may find both answers are correct. It is the traders choice which strike they remove the conversion [-u +c -p] at in order to determine the synthetic equivalent.
If you remove the conversion at the 70 strike; you get +70c / +70p / -80p
If you remove the conversion at the 80 strike; you get +80c / +2 70p / -2 80p
Have a go at putting all the positions in whatever analyser you use and see if there is any difference.
Have a good weekend.
James
Your answer is incorrect. The 3rd post in this thread had a correct breakdown.