ETF Series Solutions serves as the issuer for a range of actively managed exchange-traded funds (ETFs), including the Aptus International Enhanced Yield ETF (IDUB), which provides exposure to non-U.S. equities in developed and emerging markets through a portfolio of underlying ETFs enhanced by an options overlay strategy involving out-of-the-money calls on equity and volatility indices; equity-linked notes; and U.S. Treasury bills for collateral and liquidity. The firm offers diversified ETF products focused on capital appreciation, current income, and risk-managed strategies, targeting institutional and retail investors seeking international yield enhancement without traditional high-yield equity style risks, with IDUB aiming to distribute approximately twice the income of its MSCI ACWI ex-US Net Index benchmark. Headquartered at 615 East Michigan Street in Milwaukee, Wisconsin, ETF Series Solutions operates primarily in the U.S. market, with IDUB listed on the Cboe exchange and distributed by Quasar Distributors, LLC.
In recent developments, Aptus Capital Advisors, the investment adviser for IDUB, expanded its options-based ETF lineup in October 2025 with a suite of low-cost 15% buffered outcome funds (JANB, APRB, JULB, OCTB), complementing its actively managed offerings that surpassed $5.5 billion in assets under management as of September 30, 2025, while building on established products like the Aptus Defined Risk ETF (DRSK) and Aptus Collared Investment Opportunity ETF (ACIO). IDUB itself, which commenced trading on July 22, 2021, has grown to approximately $390.9 million in net assets as of December 2025, with an expense ratio of 0.44% and shares outstanding of 16.125 million, reflecting steady institutional adoption evidenced by 39 holders managing over 17 million shares.