UBS Investment Bank announced a quarterly coupon payment for the ETRACS Alerian MLP Index ETN (NYSE: AMU – $28.25) of $0.3597 for note holders of record on May 29, 2015. The payout will take place on June 8 and is currently yielding investors of AMU 5.06%, assuming the current rate and share price remain constant. The payment is slightly less than the $0.3726 paid out in the first quarter, but the fluctuation from quarter-to-quarter is normal and the long-term distribution trend has been relatively steady. The investment in AMU seeks to replicate the Alerian MLP Index, which measures the performance of 50 prominent energy master limited partnerships that earn the majority of their cash flow from the transportation, storage, processing or production of energy commodities. While the shares have retreated with overall energy prices, they remain a core holding for income-seeking investors.