The iBoxx AUD Overall Index measures the performance of investment grade, AUD-denominated bonds. The index comprises bonds issued by Australian commonwealth government, semi-government entities, including agencies, public banks, regions, supranationals and other semi-governments, as well as covered bonds and corporate issuers. Eligible bonds must have minimum amount outstanding of AUD 2 billion for Australian Government Securities and AUD 250 million for non-government securities. Bonds must have a minimum time to maturity of 18 months at issuance and 12 months at rebalancing.