Commodity funds can reduce your portfolio's riskiness – USATODAY.com
For people sick of volatility, there's evidence that adding another volatile investment — managed commodities — can calm a portfolio. This isn't a strategy for everyone, particularly those prone to nervous tics, but it may work for you. A futures contract is the obligation to make or take delivery of a certain amount of a commodity by a set date. A corn futures contract, for example, might be for 5,000 bushels of corn for delivery in September. Futures aren't just for agriculture: You can trade futures on metals, energy and financial indexes, too.