arbitrage
noun [ U ]
STOCK MARKET uk/ˌɑːbɪˈtrɑːʒ/ us/ˈɑːrbɪtrɑːʒ/the practice of buying something, such as shares or currency, in one place and selling them in another where you can get a higher price at the same time:
arbitrage buying/selling Traders said a rise in the peso's value made Mexican share prices more expensive compared with shares sold in New York and sparked some arbitrage selling.
The importance of computers is that arbitrage opportunities can be quickly spotted and capitalized upon.
See also
exchange arbitrage
market arbitrage