Oil Investors Pour Most Money Into Funds in 4 Years

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Investors betting oil will rebound from the lowest prices in 5 1/2 years poured the most money in more than four years into funds that track crude.

The four biggest oil exchange-traded products listed in the U.S. received a combined $1.23 billion in December, the most since May 2010, according to data compiled by Bloomberg. Another $109.9 million was added this month through Jan. 5.