investing

a kind of hedged investment meant to capture slight differences in price; when there is a difference in the price of something on two different markets the arbitrageur simultaneously buys at the lower price and sells at the higher price

investing in United States businesses by foreign citizens (often involves stock ownership of the business)

investing with borrowed money as a way to amplify potential gains (at the risk of greater losses)

arbitrage involving risk; as in the simultaneous purchase of stock in a target company and sale of stock in its potential acquirer; if the takeover fails the arbitrageur may lose a great deal of money