Fibonacci Extension
Quick Definition
A technical tool that projects potential price targets beyond the prior high or low using Fibonacci ratios (such as 1.272, 1.618, and 2.618), commonly used for setting profit targets.
Key Takeaways
- Fibonacci extensions project price targets beyond prior highs/lows using ratios like 1.272, 1.618, and 2.618.
- Three points are needed: swing low, swing high, and retracement level.
- Confluence zones — where multiple extensions overlap — are the most significant target areas.
What Is Fibonacci Extension?
Fibonacci extensions are technical analysis tools used to project potential price targets for a continuation move beyond the prior swing high or low. While Fibonacci retracements measure how far price pulls back within a trend, extensions measure where price might go after it resumes the trend. The tool uses key Fibonacci ratios — primarily 1.000 (100%), 1.272, 1.618 (the "golden ratio"), 2.000, 2.618, and 3.618 — applied to prior price swings to identify future support and resistance levels. To calculate extensions, three points are needed: a significant swing low, a significant swing high, and the retracement low (for an uptrend projection). The tool then projects the Fibonacci ratios of the initial swing distance beyond the retracement point. For example, if a stock rallies from $50 to $100 (a $50 swing) and pulls back to $75, the 1.618 extension would project to $75 + ($50 × 1.618) = $155.90 as a potential target. The most widely watched extension levels are 1.272 and 1.618, as these frequently coincide with price reversals or consolidation zones. Fibonacci extensions are particularly popular among Elliott Wave practitioners, who use them to project wave targets, and among swing traders setting profit targets. They work best when multiple Fibonacci levels from different swings cluster at the same price zone (called "confluence"), reinforcing the significance of that level.
Fibonacci Extension Example
- 1The 1.618 Fibonacci extension of the prior rally projected a target of $182 — the stock rallied to $180.50 before reversing, demonstrating the level's predictive power.
- 2Multiple Fibonacci extensions from different timeframes converged at $95, creating a strong confluence zone where traders took profits on their long positions.
Related Terms
Fibonacci Retracement
A technical tool using horizontal lines at Fibonacci ratios (23.6%, 38.2%, 50%, 61.8%) to identify potential support/resistance levels.
Elliott Wave Theory
A technical analysis theory proposing that market prices unfold in recognizable wave patterns driven by investor psychology, typically consisting of five impulse waves and three corrective waves.
Support and Resistance
Key price levels where buying pressure (support) prevents further decline or selling pressure (resistance) prevents further advance.
Trend Line
A diagonal line drawn across price highs or lows to identify the prevailing trend direction and potential support/resistance.
Pivot Points
Calculated support and resistance levels derived from the previous session's high, low, and close, widely used by day traders and floor traders.
Moving Average
A calculation that averages a security's price over a specific number of periods, smoothing price data to identify trends.
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