The iBoxx SGD Investment Grade Index is designed to measure the performance of investment grade, SGD-denominated debt from sovereign, sub-sovereign and corporate issuers. The index includes bonds with a minimum amount outstanding of SGD 500 million for Singapore Government Securities and SGD 150 million for non-sovereign bonds. Securities must have a minimum initial time to maturity of 18 months at issuance and a remaining time to maturity of at least one year at rebalancing. Multisource pricing is used for index calculation.