
AMUN seeks high after-tax income by investing primarily in investment-grade, tax-exempt municipal securities. The fund maintains an ultra-short duration profile, typically two years or less, to help reduce interest rate sensitivity. The portfolio may include various types of municipal obligations such as general obligation and revenue bonds, variable- and floating-rate issues, and tender option bonds. Up to 20% of assets may be allocated to below-investment-grade securities, while the fund may also invest in taxable fixed income if market conditions warrant it. The adviser uses sector…
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Today, Aberdeen Investments expanded its selection of active ETFs with two new mutual fund conversions. Tackling Muni Momentum First on the docket is the abrdn Ultra Short Municipal Income Active ETF (AMUN).

U.S. ETF suite surpasses $18 billion AUM1 PHILADELPHIA , Oct. 20, 2025 /PRNewswire/ -- Aberdeen Investments, the U.S. arm of the global specialist asset manager, today announced the expansion of its active exchange-traded fund (ETF) platform with the conversion of two mutual funds into fully transparent ETFs. abrdn Ultra Short Municipal Income Active ETF (NASDAQ: AMUN) abrdn International Small Cap Active ETF (NASDAQ: ASCI) These conversions come as Aberdeen's U.S. ETF franchise surpasses $18 billion in assets under management for the first time, illustrating the strength and scalability of our US platform.1 abrdn Ultra Short Municipal Income Active ETF (AMUN) seeks high after-tax current income consistent with capital preservation.