VanEck Long Muni ETF (MLN) is an exchange-traded fund in the Muni National Long category. It has $700.39M in assets, an expense ratio of 0.24% and a 3.66% dividend yield. The fund normally invests at least 80% of its total assets in fixed income securities that comprise the index. The index is comprised of publicly traded municipal bonds that cover the U.S. dollar denominated long-term tax-exempt bond market.