TOTL, managed by Jeffrey Gundlach's DoubleLine Capital, is an actively-managed fixed income fund with an extremely broad investment mandate. The ETF`s 2015 launch was one of the most successful on record judging by assets. TOTL has the latitude to invest in a wide array of fixed income sectors globally using the manager's top down macroeconomic views as well as fundamental bond-picking. Notable boundaries include avoiding short positions, and a 25% maximum allowable allocation to corporate high yield securities. TOTL uses a master feeder fund structure, similar to State Street Global Advisors' other active ETFs. Ultimately, like all actively managed funds, the decision to invest in the fund depends on one's confidence in the portfolio manager's ability to consistently beat the market through sector allocation and security selection.