DB Base Metals Double Long ETN (BDD) is an exchange-traded note issued by Deutsche Bank AG (London Branch) that seeks to track 200% of the daily performance, before fees and expenses, of the Deutsche Bank Liquid Commodity Index - Optimum Yield Industrial Metals. The underlying index comprises futures contracts on key base metals including aluminum, copper, and zinc, providing leveraged exposure to the industrial metals commodity sector for investors targeting long positions in these markets. The ETN matures on June 1, 2038, and trades primarily on U.S. exchanges with tickers BDD and BDDXF on OTC markets. Originally launched on June 16, 2008, as PowerShares DB Base Metals Double Long ETN, it was rebranded under Deutsche Bank following the transition from PowerShares branding. Headquartered through its issuer in Frankfurt, Germany, with issuance from the London branch, the product targets institutional and retail investors in commodity derivatives globally, particularly in North America and Europe. No major partnerships, acquisitions, funding rounds, or product relaunches have been reported for the ETN in the last 1-2 years, though the broader Deutsche Bank ETN suite remains active amid ongoing commodity market volatility.