World View As the dollar declines, set your sights on diversification.

If you have a well-rounded investment portfolio, it won't be filled only with U.S. securities. You know this, right? Well, now is a good time to remind yourself, since the U.S. dollar is at its weakest point in a generation.

A punier greenback is a good thing for nondollar-denominated investments. Let's say, for the sake of simplicity, that you earned 10,000 reals in profit from your Brazil-focused, exchange-traded fund. If the dollar-to-real exchange rate is 2-to-1, then your earnings are worth $5,000. But if the exchange rate drops to 1.8-to-1, then converting your profits will yield $5,556--same investment, same return, more U.S. dollars in your pocket and happy days.