How to Apply Gann Theory
Gann theory is a century-old technical analysis method built on price/time geometry — still used by some traders on modern charting platforms.
Open FxPro Account →What Gann theory covers
- W.D. Gann was an early-20th-century trader who developed geometric tools — Gann angles, the Gann Square of 9 and time-cycle analysis — to study price and time together.
- Gann angles plot price movement against time on a fixed ratio (classically 1x1) to identify potential support, resistance and trend-change points.
- The Square of 9 is a numerical spiral used to project price targets from a prior high or low; it is a charting technique, not a guarantee of where price will go.
- Modern platforms such as MetaTrader 4 and MetaTrader 5 support custom Gann-angle and Gann-fan indicators for traders who want to test the method.
- Like any technical method, Gann theory produces probabilities, not certainties, so it works best alongside a clear risk-management plan.