What is meant by the law of one price, and what does it imply about a package of securities and a given security that have the same payoff?
What is meant by the law of one price, and what does it imply about a package of securities and a given security that have the same payoff?
The law of one price implies that assets that have similar payoffs, both in terms of expected returns and risk, should be priced the same; if they are not priced the same, there is an arbitrage opportunity.