GDP Releases, Explained: Growth, Revisions and Recession Calls

Foundations

GDP, gross domestic product, is the total value of everything an economy produces, and its growth rate is the standard scorecard for whether an economy is expanding or shrinking. Two consecutive quarters of contraction is the informal definition of recession, which gives GDP releases their drama, even though markets usually know the story before the number lands.

The release schedule, and why revisions matter

US GDP for each quarter is published three times: an advance estimate about a month after the quarter ends, then two revisions in the following months as fuller data arrives. Revisions can be large enough to rewrite the story: quarters first reported as growth have later been revised into contraction, and vice versa. Commentary that treats the advance print as final is over-reading a draft.

Reading past the headline

The headline is an annualised quarter-on-quarter rate in the US (a quarterly change scaled to a yearly pace, which magnifies swings; most other countries report the plain quarterly change, so cross-country comparisons trip people up). The composition matters more than the total: consumer spending is about two thirds of US GDP and is the engine that matters; volatile items like inventories and trade can swing a quarter without saying anything about underlying demand. A strong headline built on inventory stockpiling is borrowed growth.

Why markets often shrug

GDP is the most backward-looking of the major releases: by publication, markets have already seen months of jobs, inflation, PMI and retail data from inside the quarter. It moves markets mainly when it challenges the consensus story (a surprise contraction, or growth despite gloom) or when a recession call hangs on it. Its deeper role is as the anchor: the number all the faster data is ultimately trying to predict.