Global X Funds, the New York-based fund provider known for niche strategies, filed paperwork with U.S. regulators to market another ETF focused on master limited partnerships, but this one focused on small-caps in the segment.

The Global X Junior MLP ETF will track a Solactive index comprising small-capitalization MLPs involved with everything from mining and production of natural resources to storage, transportation and marketing.

The fund would add a new wrinkle to a quickly crowding space of MLP-focused strategies that include the likes of the $4.4 billion JPMorgan Alerian MLP ETN (NYSEArca: AMJ) and ALPS’ $3.4 billion Alerian MLP ETF (NYSEArca: AMLP). Global X itself already offers a broad MLP fund, the Global X MLP ETF (NYSEArca: MLPA), which has gathered $7.5 million since it came to market in April.

MLPs are U.S. energy assets created back in the mid-1980s, and have been used by many as safety investments, much like an allocation to U.S. Treasurys, and one that delivers solid yields. They are essentially partnerships that trade on a stock exchange like a corporation, but without federal income tax liability at the entity level, because they derive most of their revenues from steady fees such as interest, dividends, real estate rents, transportation and storage.

Global X is hoping to tap into the enormous investor appetite for income-generating strategies at a time of ultra-low interest rates following the collapse of financial markets in 2008. MLPs are well known for the steady dividends they deliver, and their popularity is clear in the assets other MLP-focused strategies have gathered.

The company noted in the filing that the fund would be taxed as a regular corporation for federal income tax purposes, and part of the fund’s distributions would be treated as return of capital for tax purposes. That means distributions are not taxable income to the investor, but they would reduce an investor’s tax basis in the fund shares.

No ticker or fees were disclosed in the filing.