HYBX actively invests to provide exposure to below investment grade bonds issued by both government and corporate entities. The securities in the fund may include US obligations, money market instruments, investment grade corporate debt, US MBS, foreign debt securities, and privately issued MBS, ABS, and CMBS. HYBX may invest also in USD or non-USD denominated securities, from both developed or emerging markets. In selecting the components of the fund, the adviser considers the potential performance of various market sectors, security selection available within a given sector, the risk/reward equation for different asset classes, liquidity conditions, the shape of the yield curve and projections for changes in the yield curve, fluctuations of interest rates, and current monetary and fiscal policy. HYBX began as the TCW High Yield Bond Fund, with $40.7 million in assets before converting to an ETF.