Exchange traded notes (ETNs), recently popularized because of the success of exchange traded funds (ETFs), are giving investors a new tool to access hard-to-reach asset classes. The original provider of the ETN is Barclays Global Investors, the same sponsor of the iShares ETF family. Recently, several new commodity ETNs have been added to the lineup  in an attempt to slice up the market a bit more. Remember, these are debt obligations of Barclays, and you do not own the various commodities, reminds Roger Nusbaum for TheStreet.com. The new ETNs are:

• iPath Dow Jones AIG Agriculture Total Return Sub Index (JJA)
• iPath DJ AIG Copper Total Return Sub Index (JJC)
• iPath DJ AIG Grains Total Return Sub Index (JJG)
• iPath DJ AIG Energy Total Return Sub Index (JJE)
• iPath DJ AIG Industrial Metals total Return Sub Index (JJM)
• iPath DJ AIG Livestock Total Return Sub Index (COW)
• iPath DJ AIG Natural Gas Total Return Sub Index (GAZ)
• iPath DJ AIG Nickel Total Return Sub Index (JJN)

Tags: Commodity ETFs, Copper, ETNs, Natural Gas