ETNs (Exchange traded notes) are securities that track an index, commodity, security or a basket of underlying assets. ETNs are traded on the stock exchange like shares in a listed company and some ETNs give investors access to markets that can be otherwise difficult to access. The risk exposure will depend on which underlying assets the ETN is linked to and whether or not the investment is leveraged. Reverse ETFs that offer positive return when the underlying security return is negative, are also offered. ETNs have one or more market makers committed to quoting binding bid and offer prices.