EasyOptions & Greeks

Find the Put from Parity

Goldman SachsMorgan Stanley

A 1-year European call struck at 100 trades at $7. The stock is at$ 100, pays no dividends, and the continuously-compounded rate is 5%. By put–call parity, what should the European put cost (in dollars)?

Approach

C − P = S − K·e^(−rT).

Solve for P.