NEW YORK ( TheStreet) -- Investors who want to invest in natural gas futures have two choices in the U.S. market: United States Natural Gas (UNG) and the iPath Dow Jones-UBS Natural Gas Total Return Subindex ETN (GAZ).UNG and GAZ offer investors exposure to natural gas futures contracts. Unlike the precious metals, these funds do not store gas, and that has been a sore spot for investors in 2009. Futures contracts cannot be bought and held; they must be "rolled" each time the contract expires.
Ultimate Guide to Natural Gas Futures, Part 1
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