13 New Commodity ETNs

NEW YORK ( TheStreet Ratings) - Month after month the list of exchange-traded notes continues to grow. Each narrow sub-category of investment classification is a candidate for its own tradable security.

To qualify for a risk-adjusted return ranking with TheStreet Ratings, new exchange-traded funds or notes must trade for a full year. 209 new exchange-traded funds & notes with less than one year of history are slated to be added to our universe of rated funds over the next 12 months.

The following iPath exchange-traded notes are New York Stock Exchange listed securities that are available for purchase and sale throughout the secondary market's trading day. Like ETFs, they can be sold short. These securities differ from exchange-traded funds in that they are senior, unsecured, unsubordinated debt securities of Barclays Bank PLC ( BCS) that have returns tied to benchmark indexes. This adds an issuer risk not present with exchange-traded funds.

13 new notes from Barclays Bank PLC covering new pure-plays on commodities that launched in April turned in their first full calendar month of trading. All the securities below began trading on April 20, 2011.

iPath Pure Beta Aluminum ETN ( FOIL) generates returns linked to the Barclays Capital Aluminum Pure Beta TR Index (the "Index"). The Index is intended to reflect the returns that are potentially available through an unleveraged investment in the futures contracts in the Aluminum markets. In May, the fund lost 2.4%.

iPath Pure Beta Cotton ETN ( CTNN) generates returns linked to the Barclays Capital Cotton Pure Beta TR Index (the "Index"). The Index is intended to reflect the returns that are potentially available through an unleveraged investment in the futures contracts in the Cotton markets. In May, the fund gained 12.9%.

iPath Pure Beta Crude Oil ETN ( OLEM) generates returns linked to the Barclays Capital WTI Crude Oil Pure Beta TR Index (the "Index"). The Index is intended to reflect the returns that are potentially available through an unleveraged investment in the futures contracts in the Crude Oil markets. In May, the fund gained 1.8%.

iPath Pure Beta Energy ETN ( ONG) generates returns linked to the Barclays Capital Commodity Index Energy Pure Beta TR and reflects the returns that are potentially available through an unleveraged investment in six futures contracts on energy commodities traded on U.S. exchanges. In May, the fund gained 4.5%.

iPath Pure Beta Grains ETN ( WEET) generates returns linked to the Barclays Capital Commodity Index Grains & Oilseeds Pure Beta TR Index. The Index is intended to reflect the returns that are potentially available through an unleveraged investment in six futures contracts on grain and oilseed commodities traded on U.S. exchanges. In May, the fund gained 6.2%.

iPath Pure Beta Nickel ETN ( NINI) generates returns linked to the Barclays Capital Nickel Pure Beta TR Index (the "Index"). The Index is intended to reflect the returns that are potentially available through an unleveraged investment in the futures contracts in the Nickel markets. In May, the fund lost 8.3%.

iPath Pure Beta Precious Metals ETN ( BLNG) generates returns linked to the Barclays Capital Commodity Index Precious Metals Pure Beta TR and reflects the returns that are potentially available through an unleveraged investment in two futures contracts on precious metal commodities traded on U.S. exchanges. In May, the fund gained 1.7%.

iPath Pure Beta Softs ETN ( GRWN) generates returns linked to the Barclays Capital Commodity Index Softs Pure Beta TR and reflects the returns that are potentially available through an unleveraged investment in three futures contracts on soft commodities traded on U.S. exchanges. In May, the fund gained 1.7%.

iPath Pure Beta Sugar ETN ( SGAR) generates returns linked to the Barclays Capital Sugar Pure Beta TR Index (the "Index"). The Index is intended to reflect the returns that are potentially available through an unleveraged investment in the futures contracts in the Sugar markets. In May, the fund gained 10.7%.

iPath Seasonal Natural Gas ETN ( DCNG) generates returns linked to the Barclays Capital Natural Gas Seasonal TR Index which reflects the returns that are potentially available by maintaining an unleveraged investment in a rolling position in Henry Hub Natural Gas futures contracts. In May, the fund gained 6.7%.

iPath Pure Beta Cocoa ETN ( CHOC) generates returns linked to the Barclays Capital Commodity Index Pure Beta TR and reflects the returns that are potentially available through an unleveraged investment in the futures contracts on physical commodities comprising the Index. In May, the fund lost 5.6%.

iPath Pure Beta Coffee ETN ( CAFE) generates returns linked to the Barclays Capital Coffee Pure Beta TR Index (the "Index"). The Index is intended to reflect the returns that are potentially available through an unleveraged investment in the futures contracts in the Coffee markets. In May, the fund lost 5.7%.

iPath Pure Beta Agriculture ETN ( DIRT) generates returns linked to the Barclays Capital Commodity Index Agriculture Pure Beta TR. The Fund reflects the returns that are potentially available through an unleveraged investment in nine futures contracts on agricultural commodities traded on U.S. exchanges. In May, the fund gained 6.2%.

With any new trading vehicle it is important understand the unique risks involved. As you can lose money, be sure to read the prospectus of each new security before investing.

-- Reported by Kevin Baker in Jupiter, Fla.

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Kevin Baker became the senior financial analyst for TheStreet Ratings upon the August 2006 acquisition of Weiss Ratings by TheStreet.com, covering equity and mutual fund ratings. He joined the Weiss Group in 1997 as a banking and brokerage analyst. In 1999, he created the Weiss Group's first ratings to gauge the level of risk in U.S. equities. Baker received a B.S. degree in management from Rensselaer Polytechnic Institute and an M.B.A. with a finance specialization from Nova Southeastern University.