Why GDP Is a Key Economic Indicator

In the deluge of numbers that are released about the economy, GDP is the biggie, says one economist.
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Gross domestic product is one of those bellwether economic indicators that matters to Wall Street, and it holds more weight than other numbers. Gus Faucher, deputy chief economist at PNC Financial Services, explains that GDP is the broadest reading of the U.S. economy, measuring output of goods and services, and taking into account both imports and exports. He says it's the best overall measure of the size of the U.S. economy. Because of its importance, the government releases several quarterly GDP estimates prior to the final number.