Currency markets are forward-looking. By the time a policy decision is announced, an expected path for rates is already embedded in prices. The market reaction therefore reflects the surprise — the gap between the decision, the accompanying guidance, and what participants had assumed.
The channels
- Interest-rate differentials. Relative expected returns on short-dated instruments influence capital flows between currencies.
- Forward guidance. Statements about the likely future path can move markets more than the current decision.
- Balance-sheet policy. Asset purchases or reductions affect duration and liquidity conditions.
- Risk sentiment. Policy shifts alter appetite for risk assets, which feeds through to funding and safe-haven currencies.
Reading a decision
Useful preparation involves identifying, before the event: what the market has priced, which parts of the statement would count as a change in stance, and which data the institution has said it is watching. Reaction sizes around scheduled events are frequently larger and spreads wider than in normal conditions.
Primary sources first
Policy statements, minutes, projections and speeches are published directly by the institutions concerned. Reading the primary document is materially more reliable than reading a summary of a summary, and it is the standard this publication applies to its own macro coverage.