Applies to derivative products. Option pricing law that says, given a stock's price, a put and call of the same class must have a static price relationship due to arbitrage opportunities that would reinstate this relationship.
PUT/CALL PARITY
Meaning of PUT/CALL PARITY in English
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012