BBHM invests globally in mid-cap companies with durable competitive advantages. The portfolio may also include preferred stocks, convertible securities, IPOs, and other ETFs. Additionally, the fund can hold both domestic and international securities, either through direct investments in non-US stocks or through ADRs and GDRs. Security selection follows a fundamental buy-and-hold strategy, focusing on companies with strong competitive positions, high-quality management, and long-term value creation potential. Positions are divested when their prices reach the upper end of the estimated value range. BBHM converted from a mutual fund into an ETF structure, starting with $511 million in assets.