Horizontal support and resistance are the bedrock of price action, and Fibonacci layers neatly on top of them. When a retracement level lands exactly on a prior level that price has respected before, you get two independent reasons to expect a reaction at the same spot.

Why the combination works
Support and resistance are areas of market memory where buyers or sellers have acted before. Fibonacci levels are areas where pullbacks statistically stall. When memory and statistics agree, more traders place orders there, which makes the reaction more likely and often sharper — the essence of confluence from an earlier module.
How to trade the overlap
Mark your horizontal levels first from the higher timeframes, then draw the retracement. If a level such as 61.8% sits inside a known support zone, treat that as a primary decision area. Wait for a reaction — a rejection candle or a small structure shift — before entering, with a stop just beyond both the Fibonacci level and the horizontal zone.
- Draw horizontal support and resistance before the Fibonacci tool.
- Prioritise Fibonacci levels that sit on tested horizontal zones.
- Wait for a reaction candle rather than a blind limit order.
- Stop goes just beyond the combined zone, not inside it.
A Fibonacci level sitting on tested support or resistance is far stronger than either signal alone.