arbitrageur
🇺🇸
/ˌɑːrbɪtrɑːˈʒɜːr/
🇬🇧
/ˌɑːbɪtrɑːˈʒɜː(r)/
A person who buys and sells goods or currencies in different markets to make a profit from price differences.
The arbitrageur made a fortune by exploiting price differences between markets.