This ETF is the first product of its kind in the Corporate Bonds ETFdb Category to focus exclusively on debt securities with a specific credit rating. The underlying portfolio is well-balanced; less than a quarter of total assets are allocated to the top ten holdings alone. QLTA's holdings consist of the highest rated investment grade bonds; all of underlying debt securities are rated Aaa-A based on the median rating assigned by the three primary rating agencies, including Moody's, Fitch, and Standard & Poor's. LQD is by far the biggest and most popular ETF in the corporate bonds space, however, this product is less-than-ideal for investors looking to focus on the high-quality segment of the corporate debt market. From a credit rating perspective, roughly more than half of LQD's holdings would not meet the standards for inclusion in QLTA. As such, QLTA is a viable instrument with a fairly cheap expense ratio that can help investors round out their fixed income component by adding a tilt towards higher-quality debt.