Rules – The design and annual review are made on the basis of structured data provided by the World Bank (DB), the International Monetary Fund and the OECD. Quarterly Maintenance is provided by HBDO insightful research, index innovations, and a look at market, political and economic events through the lens of our index data.

Criteria – In issuing and maintaining its ratings, HBDO relies on factual information it receives from HBDO’s worldwide network and from other sources HBDO believes to be credible. HBDO conducts a reasonable investigation of the factual information relied upon by it in accordance with its ratings methodology, and obtains reasonable verification of that information from independent sources, to the extent such sources are available for a given security.