By ELIZABETH O'BRIEN

Buy: Uranium

• $52 a pound

The price of uranium has fallen about 25 percent since the meltdown of Japan's Fukushima Daiichi nuclear reactor. Such plants, of course, use uranium as fuel. Yet despite all the increased concerns about nuclear energy, "no one so much as put a wrench down" in the construction of new reactors, says Pete Sorrentino, portfolio manager for Huntington Asset Advisors. Indeed, 63 reactors are currently under construction worldwide, many of them in China. What's more, says Malcolm Gissen, comanager of the $15 million Encompass fund, the likely expiration in 2013 of a U.S.-Russia agreement that provides the U.S. with uranium from decommissioned Russian nuclear weapons will constrict supply and push prices up. The Global X Uranium exchange-traded fund (URA) is one of the easiest ways to invest in uranium.

Sell: Natural Gas

• $2 per million British thermal units

Thanks to the innovative technologies of horizontal drilling and hydraulic fracturing -- better known as fracking -- the U.S. potentially has more than a 100-year supply of natural gas. That means the price of natural gas will probably stay depressed for a while, says Sandy Villere III, portfolio manager of the $138 million Villere Balanced fund. An expanded market for liquefied natural gas could push demand and prices higher over the long term, as could stricter fracking rules (regulators are studying whether fracking can contaminate water supplies). But for now, "natural gas is a bad place to be," Villere says.

Hold: Oil

• $106 a barrel

China has already surpassed the U.S. as the world's biggest car-buying country. That fact alone speaks volumes about the long-term demand for black gold. But many experts now say oil is fairly valued. An untold number of factors-- from a serious recession in Europe to any attempt to disrupt the flow of crude from the Middle East -- can affect oil's price, but the rise in domestic production in places such as North Dakota will likely lessen the impact of geopolitical events on prices, analysts say. All told, says Sorrentino, "you probably won't make a lot of money in oil this year."