Speculators think they can fight central banks. They see a fixed peg or a floating currency experiencing heavy interventions, and they try to buy or sell against the flow. That is financial suicide. Central banks have massive reserves, but they also have limits. If a central bank defends a peg, it must buy its currency using foreign reserves. I map these official boundaries in coordinate space to avoid getting run over.
When a country adopts a fixed exchange rate, the central bank must defend the peg. If market forces create a depreciation pressure, the central bank must buy its own currency using its foreign exchange reserves. This intervention reduces the supply of the national currency, keeping the exchange rate at the target level.
If reserves are exhausted, the central bank can no longer defend the peg, forcing a devaluation. In a floating system, interventions are rare, but they can still occur when the exchange rate deviates significantly from its macroeconomic equilibrium. These interventions displace the currency coordinates on the Cartesian plane.
In coordinate space, a fixed exchange rate appears as a static line. The central bank's interventions act as an artificial boundary that prevents the coordinate from displacing itself.
By projecting these official boundaries onto Plane A and Plane B, I identify how much pressure the peg is experiencing. If the coordinates are pushed far from the peg level, it indicates a high probability of intervention or devaluation. This spatial analysis allows you to position your trades relative to the central bank's constraints. Do not stand in front of a central bank intervention vector.
Related reading: The Federal Reserve Maintains the Federal Funds Rate at a 22 Year High: Summary of FOMC Decisions
