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Fortune
Fortune
Nick Lichtenberg

The 4.9% mystery: U.S. economy sees productivity surge, but drivers remain an 'open question,' top economist says

powell (Credit: Chip Somodevilla/Getty Images)

The United States economy is producing more goods and services with surprising efficiency, handing policymakers a welcome economic buffer but leaving analysts scrambling to explain exactly what is fueling the engine.

According to a research note released Friday by Morgan Stanley, third-quarter GDP data revealed a “surge” in nonfarm productivity growth to an annualized rate of 4.9%. This marks the second consecutive quarter of substantial gains, soaring well above the four-quarter average of just 1.9%.

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