US Advance Gross Domestic Product (GDP) is a key release and is published each quarter. GDP measures production and growth of the economy, and is considered by analysts as one the most important indicators of economic activity. The Advance GDP is the first of three versions and has the most impact on the movement of GDP/USD. A reading which is higher than the market forecast is bullish for the pound. Here are all the details, and 5 possible outcomes for GBP/USD. Published on Wednesday at 12:30 GMT. Indicator Background US Advance GDP is considered one of the most important economic indicators, and provides an ... (full story)