Fibonacci retracement is a technical analysis tool that uses mathematical ratios to identify potential support and resistance levels. It is one of the most widely used tools among professional traders for determining entry points during a price correction within a trend.
The Fibonacci sequence
The Fibonacci sequence is a series of numbers where each number is the sum of the two preceding ones: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89... The ratio between consecutive numbers converges to 1.618, also known as the golden ratio. This ratio appears everywhere in nature, from shells to galaxies.
In the financial world, the inverse ratios of this sequence are used as percentages: 23.6%, 38.2%, 50%, 61.8%, and 78.6%.
How do you use Fibonacci retracement?
You draw a Fibonacci retracement between a significant low and high (in an uptrend) or between a high and low (in a downtrend). The tool then calculates the levels where the price may find support or resistance during a pullback.
Suppose a stock rises from 40 to 60 euros. The move is 20 euros. The Fibonacci levels are then:
- 23.6%: 60 - (20 x 0.236) = 55.28 euros
- 38.2%: 60 - (20 x 0.382) = 52.36 euros
- 50.0%: 60 - (20 x 0.500) = 50.00 euros
- 61.8%: 60 - (20 x 0.618) = 47.64 euros
- 78.6%: 60 - (20 x 0.786) = 44.28 euros
The key levels
38.2% (First Stop Target)
The first level where a pullback often stops. In strong trends, the price frequently does not go beyond this level before the trend resumes. This level is almost always respected, even if only temporarily.
61.8% to 78.6% (Optimal Trade Entry zone)
The area between 61.8% and 78.6% is considered by many professional traders as the optimal entry zone. The midpoint at 70.5% is also known as the sweet spot. If you buy here, you take relatively little risk compared to your potential reward.
The logic behind it: large institutional players build their positions in this zone. They don't buy at the top, but wait for a meaningful pullback. These players then defend the levels where they entered.
78.6% as the boundary
If the price drops below the 78.6% level, the entire upward move comes into question. At that point, there is a strong likelihood that the original trend is over and this is not simply a healthy correction.
Fibonacci in practice
Fibonacci retracement works best in combination with other tools. Never use it as the sole signal for a trade. Confirmation from volume, momentum indicators such as the RSI or MACD, and candlestick patterns makes the signal considerably stronger.
An example: the price drops to the 61.8% level. At that point you see a bullish engulfing candle appear, volume increases, and the RSI shows an oversold signal. Three independent confirmations that together form a strong case to enter.
Fibonacci extensions
Where retracements help determine entry points, Fibonacci extensions are used as profit targets. The levels above 100% (127%, 161.8%, 200%) project where the price may move after the trend resumes.
A commonly used rule of thumb: when a trading range is broken, the price target is often the equal distance of that range projected from the breakout point. This corresponds to the 200% level.
Common mistakes
- Using Fibonacci without confirmation from other indicators
- Choosing the wrong highs and lows as reference points
- Applying Fibonacci on too short timeframes where the levels are less reliable
- Treating levels as exact price points instead of zones
Fibonacci retracement is not a prediction tool but a framework. It gives you zones where you should be alert for signals. The best traders combine Fibonacci with technical analysis, volume, and patience. Because most of the time as a trader you do nothing. You wait until the setup you're looking for presents itself.