UBS ETRACS Alerian MLP Infrastructure Index ETN Series B (MLPB) is an exchange-traded note issued by UBS that tracks the performance of the Alerian MLP Infrastructure Index (AMZI), providing investors with exposure to master limited partnerships (MLPs) engaged in the transportation, storage, and processing of energy commodities; it offers a variable quarterly coupon linked to cash distributions paid by the MLPs in the index, less an annual tracking rate of 0.85% accrued daily. The ETN, which matures on April 2, 2040, lists on the NYSE Arca under the ticker MLPB and constitutes senior, unsecured, unsubordinated debt securities subject to UBS credit risk. Key index constituents as of late 2025 include Sunoco LP (SUN; 12.47% weight), Western Midstream Partners LP (WES; 12.44%), MPLX LP (MPLX; 12.17%), Enterprise Products Partners LP (EPD; 11.96%), and Energy Transfer LP (ET; 11.89%), among others focused on energy infrastructure in North America.
Launched on October 8, 2015, with CUSIP 90274D382, the ETN operates primarily in the U.S. market, targeting investors seeking yield from midstream energy infrastructure without direct MLP ownership complexities. Headquartered through its issuer UBS in the United States for trading purposes, it serves institutional and retail investors interested in energy limited partnerships and blend/multi-cap strategies. The product emphasizes total return potential from price appreciation and distributions, with recent indicative values around USD 25.29 and spot prices near USD 25.28 as of mid-November 2025.
Recent developments include ongoing quarterly coupon declarations by UBS, such as $0.4261 paid on October 21, 2025 (ex-date October 10, 2025; annualized current yield approximately 6.97%), alongside prior payments like $0.4196 in July 2025 and $0.4114 in April 2025, reflecting sustained distribution payouts tied to underlying MLP cash flows. In 2024-2025, UBS continued routine operations without reported major acquisitions, partnerships, funding rounds, or product relaunches specific to MLPB, though the broader ETRACS platform announced multiple ETN coupon payments across its portfolio. Historical adjustments, such as underlying index methodology changes noted in prior years, have supported ongoing tracking efficacy amid evolving MLP sector dynamics.