Deutsche Bank will soon close a popular exchange-traded note amid heightened regulatory scrutiny of exchange-traded products that make use of leverage to invest in commodities, the Wall Street Journal reported.

The bank plans to redeem all shares of the $425 million PowerShares DB Crude Oil Double Long exchange traded note on September 9, pointing to "limitations imposed" by the New York Mercantile Exchange.

The ETN was launched in June 2008. 

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