Fibonacci Retracement
— the Complete Guide to Using the 23.6%, 38.2%, and 61.8% Levels for Entries and Stops
Fibonacci Retracement is a supplementary tool for predicting how deep a pullback will go after a big rally (or decline). Levels derived from the golden ratio act as support and resistance, becoming reference points for a pullback entry.
What Is Fibonacci Retracement?
It's a technical-analysis tool that uses ratios derived from the Fibonacci sequence (1, 1, 2, 3, 5, 8, 13, 21...) to predict potential support and resistance zones during a price pullback. It applies the mathematical property that the ratio between adjacent numbers converges on the golden ratio (1.618).
When a stock pulls back after a big rally, being able to predict in advance how far that pullback might go makes it easier to time a pullback entry. Fibonacci retracement provides a guideline for that prediction.
The Key Fibonacci Levels
| Level | Meaning | Practical Interpretation |
|---|---|---|
| 23.6% | A shallow retracement | The most common pullback depth in a strong trend. A bounce here confirms strength |
| 38.2% | A moderate retracement | A zone that confirms the trend is continuing. A common pullback-entry point |
| 50.0% | The halfway retracement | Outside the actual Fibonacci sequence, but works strongly as a psychological midpoint |
| 61.8% | The Golden Ratio | The most important level. A bounce here confirms strength; a break warns of a trend reversal |
| 78.6% | A deep retracement | A pullback this deep signals a weakening trend. A break raises the odds of a trend reversal |
How to Set Up the Fibonacci Tool
- Find a clear low and high — pick a recent, clearly defined Swing Low and Swing High. Avoid a stretch that's too old or ambiguous
- Drag in the direction that matches — for a pullback after a rally, drag from low → high. For a bounce after a decline, drag from high → low
- The levels draw automatically — the tool automatically plots horizontal lines at 23.6%, 38.2%, 50%, 61.8%, and 78.6%
- Check for overlap with other indicators — look for a zone where a Fibonacci level overlaps a moving average or a horizontal support line
A Pullback-Entry Strategy
The most practical use of Fibonacci retracement is a pullback entry during an uptrend.
- Confirm a strong uptrend — an ADX of 25 or above means the trend has enough strength
- Wait for the price to reach the 38.2% or 61.8% Fibonacci level
- At that level, confirm a candlestick reversal signal (a hammer, a large bullish candle) plus rising volume
- Enter on the bounce off the level. Place your stop just below the next level
See what pullback trading is for the broader pullback-trading strategy.
The Limits and Caveats of Fibonacci Retracement
The Fibonacci tool is powerful, but using it alone gives low reliability.
- Subjectivity in picking the low/high: the levels come out completely different depending on which low and high you pick. Different people can get different levels from the same chart
- You can't predict which level it bounces at: you can't know in advance whether it stops at 38.2% or falls all the way to 61.8%. You have to approach it in stages, checking the reaction at each level
- In a strong downtrend, every level can break: if the trend has reversed, every Fibonacci level can collapse. If horizontal support breaks along with it, Fibonacci becomes hard to trust too
- It relies on a self-fulfilling effect: it tends to work because so many people are watching the same level, which can also make it a "trap" that works against individual investors
The Difference From Fibonacci Extension
Something worth knowing alongside Fibonacci retracement is Fibonacci Extension. While retracement is a tool for gauging "how far it'll pull back," extension gives you "how far the next rally might go" at the 127.2%, 161.8%, and 261.8% levels. If you entered at the 61.8% retracement zone, you'd use the 127.2%–161.8% levels as your next target, for example.