Market movements rarely move in straight lines. Prices rise and fall, creating patterns that experienced traders learn to recognize and profit from.
One of the most reliable tools for predicting where these price movements might pause or reverse comes from an unexpected source: a mathematical sequence discovered centuries ago. Fibonacci retracement helps traders identify potential turning points in financial markets.
This technique uses horizontal lines to indicate areas of support or resistance at the key Fibonacci levels before the price continues in the original direction. Many traders rely on these levels to make informed decisions about when to enter or exit positions.
The Math behind It
The Fibonacci sequence starts with 0 and 1, then each subsequent number is the sum of the two preceding numbers: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, and so on. This sequence appears throughout nature, from flower petals to spiral shells.
The ratios used in trading come from dividing numbers in this sequence. When you divide any Fibonacci number by the number that follows it, you get approximately 0.618 (or 61.8%).
Divide by the number two places to the right, and you get 0.382 (38.2%). The 23.6% level comes from dividing a Fibonacci number by the number three places to the right.
How to Calculate Fibonacci Retracement Levels
Calculating Fibonacci retracement levels requires identifying a significant high and low point in the price movement. For an uptrend, you measure from the lowest point to the highest point. For a downtrend, you measure from the highest point to the lowest point.
The calculation involves multiplying the total range by each Fibonacci ratio. If a stock moves from $100 to $200 (a $100 range), the 61.8% retracement level would be $200 – ($100 × 0.618) = $138.20. The 38.2% level would be $200 – ($100 × 0.382) = $161.80.
Most trading platforms automatically calculate and display these levels when you select the fibonacci retracement tool and click on your chosen high and low points.
How to Use Fibonacci Retracement
Applying Fibonacci retracement effectively starts with identifying clear trends and significant price swings. Look for strong moves where the price travels a substantial distance without major interruptions. These provide the most reliable retracement levels.
When the price begins to pull back from a major high or bounce from a major low, watch how it behaves near the Fibonacci levels. Prices often pause, consolidate, or reverse at these levels. Strong support or resistance at a Fibonacci level can signal a good entry point for continuing the original trend.
Combine Fibonacci levels with price action analysis. If the price approaches a retracement level with strong momentum, it might break through. If it approaches slowly with decreasing volume, it’s more likely to find support or resistance.
The 61.8% level often provides the strongest support or resistance, making it particularly important for trading decisions.
Combining Fibonacci with Other Tools
Fibonacci retracement becomes more powerful when combined with other technical indicators. Moving averages can confirm the overall trend direction, while oscillators like RSI can indicate whether the market is oversold or overbought at key Fibonacci levels.
Support and resistance levels from previous price action add extra significance to Fibonacci retracements. When a Fibonacci level coincides with a previous support or resistance area, it creates a stronger potential turning point.

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