Definition of Law Of One Price



The law of one price states that the price of an asset in one country is exactly equal to the price of the identical asset in another country. The law of one price assumes that there are no costs related to a transaction, transportation, conversion (foreign exchange), and no manipulation of price from participants of the market.

 


Although the above assumptions are unrealistic, the law of one price also assumes that the price difference in two different country or markets is settled by arbitrage opportunity. A person can benefit from an arbitrage opportunity when an asset is available at a lower price and it can be sold at a higher price in another market. Ultimately the price will move to a price that is equal in all places.

 

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