International mutual funds are those funds that invest in non-domestic securities markets throughout the world. Investing in international markets provides greater portfolio diversification and let you capitalize on some of the world's best opportunities. If investments are chosen carefully, international mutual fund may be profitable when some markets are rising and others are declining. However, fund managers need to keep close watch on foreign currencies and world markets as profitable investments in a rising market can lose money if the foreign currency rises against the dollar. In recent years international mutual funds have gained popularity. This can be attributed to removal of trade barriers and expansion of economies, which has sparked off growth in various regions of the world.