arbitrage
noun [ U ] finance & economics specialized uk/ˌɑː.bɪˈtrɑːʒ/ us/ˈɑːr.bɪ.trɑːʒ/
套利;套汇;套购
the method on the stock exchange of buying something in one place and selling it in another place at the same time, in order to make a profit from the difference in price in the two places