An exchange traded fund (ETF) that gives investors exposure to gasoline prices has jumped 26% over the past three months with drivers in some U.S. cities paying more than $4 a gallon at the pump.

The national average price of self-serve, regular unleaded gas is $3.76 a gallon, according to the Lundberg Survey.

Gas prices have risen by nearly 20 cents a gallon over the past two weeks on lingering concerns over oil supply disruptions in Libya.

The average price for a gallon of gas in the U.S. is less than 10% below its record high, Reuters reported.

U.S. Gasoline Fund (NYSEArca: UGA) is up roughly 26% year to date.

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