SPHY is passively managed to provide core exposure to broad US corporate bonds rated below investment grade. The fund selects securities with a minimum of at least 18 months remaining to final maturity at the time of issuance and no limit on duration. The index is rebalanced monthly. Prior to September 23, 2019 the fund traded under the ticker CJNK and tracked the ICE BofAML US Diversified Crossover Corporate Index.