Our Monthly GDP (MGDP) Index is an indicator of real aggregate output that is conceptually consistent with real Gross Domestic Product (GDP) in the National Income and Product Accounts (NIPA). Our approach uses calculation and aggregation methods comparable to the official GDP from the U.S. Bureau of Economic Analysis. As a result, you receive a monthly index whose variation at the quarterly frequency mimics that of official GDP, and whose intra-quarter variation is a meaningful and comprehensive measure of monthly changes in output.
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US Monthly GDP (MGDP) Index
Methodology
We calculate the MGDP in two steps. First, we derive a raw index from various monthly data, most of which is source data that BEA uses to calculate official quarterly GDP. Second, we calculate a monthly residual that reconciles the raw index with official GDP at the quarterly frequency. We provide MGDP data and historical files to the public at no charge. Please contact us if you need to access our archives of the MGDP.
Additional Coverage
In addition to MGDP, we calculate monthly measures of several NIPA aggregates:
- Final sales of domestic product
- Final sales to domestic purchasers
- Final sales to private domestic purchasers
- Gross private domestic investment
- Fixed investment
- Nonresidential fixed investment
- Residential investment
Experts
Ben Herzon
His specialty is translating recent trends in high-frequency data into a near-term forecast of GDP growth with high statistical precision. He directs the analysis of the data, authors data commentaries, runs the current-quarter tracking system, designs and maintains a population-weighted snowfall database and conducts additional research that requires a heavy dose of statistical horsepower. In addition, he writes portions of the forecast reports and researches a variety of macro topics.Ben received his Ph.D. in economics from Washington University in April 1998. He is a member and previously served as president of the St. Louis Gateway Chapter of NABE.
Patrick Newport
Patrick tracks the investment and construction sectors for the US Macroeconomic Service and serves on client consulting projects. He manages long-term forecasts for and co-manages the macroeconomic model. He joined the company in 1998. Previously, he worked as a research economist for the Washington State Department of Revenue, where he later served as a senior economist for the Office of the Forecast Council of Washington State.He holds a Bachelor of Arts in Business Administration and a Master of Arts in Economics from Louisiana State University, US. Patrick attained his doctorate in Philosophy from Harvard University, US. He speaks English and Spanish.
Michael Konidaris
Michael leads the product development for the CECL implementation by financial institutions. His responsibilities include the construction of cross-asset class econometric models, the development of forecasts for Libor, Swap and Corporate Bond rates, and the construction of simulations of global economic scenarios to evaluate the P&L of clients' portfolios.Michael joined S&P Global through the 2017 acquisition of Macroeconomic Advisers. He has worked as an economic consultant on the forecasting team at Roubini Global Economics and as a research intern at The Midway Group, a hedge fund specializing in the US residential mortgage market. He completed his military service as a sailor at the Hellenic Navy and co-founded and served at the board of directors of AUEB's Investment and Finance Club, the first ever finance club in a Greek University. Michael holds a Bachelor of Science degree in accounting and finance from Athens University of Economics and Business (AUEB), Greece, and a Master of Arts degree in economics from New York University (NYU), US.
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