UBS ETRACS Alerian MLP Index ETN Series B (NYSE Arca: AMUB) is a senior unsecured exchange-traded note issued by UBS AG that tracks the performance of the Alerian MLP Index, a float-adjusted, capitalization-weighted composite of energy master limited partnerships (MLPs); it may pay a variable quarterly coupon linked to the cash distributions from MLPs in the index, less a 0.80% annual investor fee accrued daily. The ETN provides exposure to potential price appreciation and income from midstream energy infrastructure MLPs focused on the transportation, storage, and processing of energy commodities such as natural gas, crude oil, and refined products; it trades on the NYSE Arca exchange with CUSIP 90274D374, an initial trade date of October 8, 2015, and maturity on July 18, 2042. UBS AG, headquartered in Zurich, Switzerland and with principal U.S. operations in New York, serves institutional and retail investors globally through its investment banking and wealth management segments, including structured products like ETRACS ETNs.
In late 2019, UBS AG launched an exchange offer allowing holders of the Series A version of the ETN to voluntarily exchange on a one-for-one basis into Series B shares, shifting from co-obligation by UBS AG and UBS Switzerland AG to UBS AG as the sole issuer and obligor, with a related SEC Registration Statement declared effective on December 9, 2019. The Alerian MLP Index, calculated by S&P Dow Jones Indices, undergoes periodic rebalancing and constituent changes, such as recent additions and removals announced by VettaFi to reflect evolving MLP market dynamics. Ongoing product maintenance includes regular quarterly coupon announcements and payments, with the most recent valuation on November 17, 2025, alongside prospectus supplements updating terms as needed.