Long-only commodities mutual funds, exchange-traded funds and exchange-traded notes are, once again, attracting billions of assets, after losing money throughout 2008, The Wall Street Journal reports.

“One thing that has changed significantly in recent weeks is the attitude of investors to commodity exposure,” Barclays Capital said in a research note. In December, for example, investors placed $3.9 billion in commodity ETFs and ETNs, bringing the total in those categories to $36.2 billion.

The two most popular commodity categories are oil and gold.

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