Use tag etn for questions about Exchange Traded Notes. ETNs provide a streamlined way for retail investors to access instruments like commodities and currencies, or complex strategies, e.g. profiting from changes in the shape of the U.S. Treasury yield curve.
ETNs trade on a stock exchange. Unlike an ETF, an ETN is a senior, unsecured debt security issued by a bank. ETN return is linked to a market index or other benchmark.
An ETN promises to pay at maturity, the full value of the index, minus the management fee. Like any other debt security, the investor is subject to the credit risk of the bank issuer. ETNs have no principal protection. Investopedia, What are ETNs?