The ETF Professor, Benzinga Staff Writer

JPMorgan Chase (NYSE: JPM) announced on Thursday that will cap issuance for the popular Alerian MLP Index ETN (NYSE: AMJ) at 129 million notes. The move is significant because with almost $4.2 billion in assets under management, the Alerian MLP Index ETN is the largest exchange-traded product offering exposure to MLPs.

The universe of MLP exchange-traded products has grown rapidly, but the Alerian MLP Index ETN and the ALPS Alerian MLP ETF (NYSE: AMLP) combine for the bulk of the roughly $7.5 billion in MLP exchange-traded products assets under management, according to data furnished by WallachBeth Capital.

New York-based WallachBeth, one of the largest ETF execution firms in the U.S., said JPMorgan’s decision to cap issuance on AMJ could open the door for new MLP ETFs to gain assets. In a note published by the firm today, AMLP, the newly minted Yorkville High Income MLP ETF (NYSE: YMLP) and the Global X MLP ETF (NYSE: MLPA), another new fund, were cited as examples of fund that could potentially benefit from the AMJ issuance cap.

“When an ETP no longer allows for creations, the fund starts to trade like a closed end fund,” WallachBeth said in the note. The reasoning behind this is that the arbitrage mechanism which allows market makers to sell the ETP is no longer available. Without the ability to create, market makers may be less inclined to sell the fund short versus a hedge of the underlying assets.”