CORP is passively managed to track an index focused on investment-grade corporate US bonds. The fund invests in USD-denominated securities rated at least Baa or higher by Moodys or its equivalent, with no less than one year to maturity. Constituents are weighted by market value. Using a sampling strategy to track the index, the fund invests in a sample of securities that collectively have a similar investment profile to the underlying index. The index is rebalanced on a monthly basis.