Economics & Country Risk Blog

Monthly GDP Index falls 0.1% in October 2017

The Monthly GDP Index slipped 0.1% in October. This followed a 0.1% increase in September that was revised higher by one-tenth. The slight decline in October reflected a decline in net exports that was partially offset by modest increases in domestic final sales and nonfarm inventory investment. The level of GDP in October was only 0.3% above the third-quarter average at an annual rate. Implicit in our latest tracking forecast of 2.5% GDP growth in the fourth quarter is a solid, 0.7% increase in monthly GDP in November, driven by increases in inventory investment and net exports.

The Monthly GDP Index is consistent with the NIPA's for two reasons. First, MGDP is calculated using much of the same underlying monthly source data that is used in the calculation of GDP. Second, the method of aggregation to arrive at MGDP is similar to that for official GDP. Growth of MGDP at the monthly frequency is determined primarily by movements in the underlying monthly source data, and growth of MGDP at the quarterly frequency is nearly identical to growth of real GDP.


Macroeconomic Advisers by IHS Markit's index of Monthly GDP (MGDP) is a monthly indicator of real aggregate output that is conceptually consistent with real Gross Domestic Product (GDP) in the National Income and Product Accounts.

Blog co-authors:
Chris G. Christopher, Jr. is the Executive Director of US Macro, Global Economics, and Consumer Markets for IHS Markit.
Ben Herzon is an Executive Director at Macroeconomic Advisers By IHS Markit.
Kathleen Navin is a Director at Macroeconomic Advisers By IHS Markit.
Posted 28 November 2017

About The Author

Executive Director of US Macro, Global Economics, and Consumer Markets

Dr. Chris G. Christopher, Jr. is Executive Director in the US Macro, Global Economics, and Consumer Economics for IHS Markit. He brings over 25 years of experience as an economist, academic, forecaster, and  demographer. Prior to joining IHS, Christopher worked for FedEx Services in the forecasting department and as the Chief Econometrician for OIT. In addition, he worked as a research economist at Regional Economic Models, Inc. (REMI); the New York State Legislative Tax Study Commission; and as an associate professor, administrator, and university lecturer in econometrics, economics, and business. Christopher holds a Bachelor of Arts in economics and political science, Master of Arts in economics, Master of Arts in mathematics, Doctorate of Philosophy in economics from the University at Albany. Dr. Christopher has taught graduate and undergraduate courses at various business schools and economics departments.

Dr. Christopher writes a quarterly column for CSCMP’s Supply Chain Quarterly, has several academic publications, and writes perspective pieces for the mass media. He is a member of the Econometric Society, American Economic Association, and National Association of Business Economists (NABE). Chris is on the board of economic advisors for the New York State Assembly, and a member of the NABE Travel & Transportation Roundtable. In addition, Chris is a NABE Certified Business Economist (CBE), and Consensus Economics 2013 forecast accuracy award winner (US GDP & CPI).