Bear Stearns is now offering Exchange Traded Notes (ETNs) that are tied to the Alerian MLP Select Index. Per Alerian, the notes are the first of their kind, and allow investors to diversify risk across energy MLPs while owning only one security. ETN holders are entitled to the equivalent cash distributions (paid monthly) of the underlying MLPs in the index.
However, the distributions are considered ordinary income. That is, they are taxed like dividends. In contrast, investors who invest directly in MLPs are allowed to defer taxes on cash distributions until they sell their MLP units.
The downside to these deferrals is the paperwork involved, as owners of MLPs can be required to file tax forms in every state where the entity does business. Owning an ETN eliminates this problem, as investors simply fill out a 1099 as with other investments.
Related Links:
http://www.alerian.com/etn.html