Red Flag Days · Lesson 4 of 6
CPI and the Supporting Cast
Beneath the headliners sits a rhythm section of releases — one of which has spent recent years hitting harder than NFP itself.
CPI — the inflation report — measures how fast consumer prices are rising, published monthly for every major economy. In eras when inflation is the thing central banks are fighting, CPI becomes the most explosive release on the calendar, because it is the most direct input into the next rate decision. A hot CPI means rates higher for longer; a cool one means cuts coming — and the currency repriced in seconds. Watch for the core reading (excluding food and energy), which policy-makers trust more than the headline.
The rest of the cast, in rough order of punch:
GDP — the broadest growth measure, but backward-looking and revised repeatedly; big moves only on big surprises. PMIs — monthly surveys of purchasing managers, read as early warning of expansion (above 50) or contraction (below); markets respect them as the freshest forward view. Retail sales — the consumer's pulse. Employment reports for other currencies (UK, Australia, Canada — often released alongside their US counterpart, doubling the danger for those pairs). And speeches: a central bank chief at a conference can out-move a data release with one unscripted sentence.
The unifying rule for all of them — the single most important idea in this course: markets move on surprise, not on news. Every release has a published forecast (the "consensus"). The market has already traded that forecast before the number exists; the release only settles the difference. This is why beginners lose on news: they read "UK economy grew" as good for the pound, when the market asks only "grew compared to what was priced?" — and why the same number can be bullish one month and bearish the next.
Our red-flag list is deliberately blunt: any release graded high-impact for either currency in a pair blocks that pair for the day — CPI and a rate decision are treated with the same respect as a GDP print. Blunt costs us some tradeable days; the alternative — ranking hazards by how clever we feel — is how our −513-pip day happened.