GCOR expands Goldmans fixed income offering by providing broad US aggregate bond exposure. The fund tracks an index of investment-grade securities, of varying maturities, across five sectors: U.S. Treasury, government-sponsored, asset-backed, mortgage-backed, and credit. Securities meeting trading liquidity requirements and with a minimum of one year to maturity, are screened and ranked based on fundamental criteria respective of sector. Selection is based on the rankings within each sector. Selected securities are weighted by market value with adjustments being made to US Treasury, MBS and Corporates to match the risk characteristics of the parent index. The index is reconstituted and rebalanced monthly.