Question

To take advantage of an arbitrage opportunity, an investor would

I) construct a zero-investment portfolio that will yield a sure profit.
II) construct a zero-beta-investment portfolio that will yield a sure profit.
III) make simultaneous trades in two markets without any net investment.
IV) short sell the asset in the low-priced market and buy it in the high-priced market.

Answer 1

The answer is III) make simultaneous trades in two markets without any net investment.

Step-by-step explanation:

Arbitrage is simultaneously buying an asset ( may be currency, securities...) in a low-priced market and sell it in a high-priced market.

As a results, the investor earns profit from price differences in the two markets without risk and net investment. It is because the two trading happens at the same time once price differences in any two markets are recognized ( arbitrage opportunities recognized) and the proceed of selling the asset is immediately used for financing/returning to the buying of the asset.

Thus, (III) is the correct answer.