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Economic Calendar |  Index of Calendar Terms

Economic Calendar Terms

GDP: Gross Domestic Product

Gross Domestic Product (GDP) is the the broadest measure of economic activity. Annualized quarterly percent changes in GDP reflect the growth rate of total economic output. The figures can be quite volatile from quarter to quarter. Inventory and net export swings in particular can produce significant volatility in GDP. The final sales figure, which excludes inventories, can sometimes be helpful in identifying underlying growth trends as inventories represent unsold goods, and a large inventory increase will boost GDP but might be indicative of weakness rather than strength. The broad components of GDP are: consumption, investment, net exports, government purchases, and inventories. Consumption is by far the largest component, totalling roughly 2/3rds of GDP.

In addition to the GDP figures, there are GDP deflators, which measure the change in prices in total GDP and for each component. Though the consumer price index is a more closely watched inflation indicator, the GDP deflator is another key inflation measure. Unlike CPI, it has the advantage of not being a fixed basket of goods and services, so that changes in consumption patterns or the introduction of new goods and services will be reflected in the deflator.

With both GDP and the deflator, the market tends to focus on the quarter/quarter change. Year/year changes are also cited frequently, though they do not provide the most timely indications of economic activity or inflation. The bond market often reacts to GDP, though the price moves are typically small, as much of the GDP data is easily predicted using monthly economic releases such as personal consumption, durable goods shipments, construction spending, international trade, and inventories.

Quarterly GDP reports are broken down into three announcements: advance, preliminary, and final. After the final revision, GDP is not revised again until the annual benchmark revisions each July. These revisions can be quite large and usually affect the past five years of data.

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