Elliott Wave Theory
Elliott Wave theory, developed by Ralph Nelson Elliott in the 1930s, holds that markets move in repeating patterns: five waves in the direction of the trend, then three corrective waves against it. Wave counts are subjective, and two analysts often disagree.
Elliott Wave theory claims that crowd psychology makes markets move in a recognisable rhythm: five steps forward, three steps back, repeated at every scale from minutes to decades. Followers use the pattern to judge where a trend is in its life and where it might end. Critics point out that the counts are easy to fit after the fact. This entry explains the basic structure, the three hard rules and how to use the theory without fooling yourself.
- Category
- Technical Analysis
- Reading time
- 5 min
- Also called
- Elliott Wave, Elliott wave principle, Wave count
- Updated
Elliott Wave in plain words
Ralph Nelson Elliott developed the theory in the 1930s, and Robert Prechter popularised it in the 1970s.1
The basic cycle has eight waves: five that move with the main trend (the impulse) and three that correct it.2
Elliott tied these patterns to the mass psychology of investors, swinging between optimism and pessimism.2
How to count waves, step by step
Label the impulse
Waves 1, 3 and 5 move with the trend; 2 and 4 pull back.1
Check the three rules
If any rule breaks, the count is wrong (see below).
Label the correction
After wave 5, expect a three-part move A-B-C against the trend.1
Use Fibonacci for targets
Retracements and extensions suggest where waves may end. See Fibonacci Retracement and Extension.
Set an invalidation level
Place a stop where your count would be proven wrong. See Invalidation Level.
Worked examples
Example 1 — Testing a count with the rules
RecountWave 1 rises from $50 to $60. Wave 2 falls to $48.
| Wave 1 range | $50 → $60 |
| Wave 2 low | $48 — below the start of wave 1 |
| Verdict | Count invalid |
Wave 2 must retrace less than 100% of wave 1, so a drop below $50 breaks the count.1
Example 2 — Projecting wave 5
Target ≈ $82Wave 1 ran $10 (from $50 to $60). Wave 3 was clearly the extended wave. Wave 4 ends at $72.
| Guideline | Wave 5 ≈ wave 1 when wave 3 extends |
| Target | $72 + $10 = $82 |
When wave 3 is extended, wave 5 often roughly equals wave 1 in price — a guideline, not a rule.3
Example 3 — Trading the start of wave 3
+$14 a shareYou buy at $56 after wave 2 ends at $54, with a stop at $49.90, just below wave 1's start at $50. Price runs to $70.
| Risk | $56 − $49.90 = $6.10 |
| Gain | $70 − $56 = $14 |
| Reward-to-risk | ≈ 2.3 : 1 |
Wave 3 is never the shortest wave and often the strongest, which is why traders hunt for its start; the stop sits where the count fails.1 See Risk-to-Reward Ratio.
Impulse vs corrective waves
| Aspect | Impulse (5 waves) | Correction (3 waves) |
|---|---|---|
| Direction | With the larger trend | Against the larger trend |
| Labels | 1-2-3-4-5 | A-B-C |
| Size | Larger moves | Usually smaller |
| Rules | Three strict rules | Many variations (zigzag, flat, triangle) |
How traders use Elliott Wave
Locating the trend's stage
Early (wave 3) or late (wave 5) in a move.
Targets
Combining wave guidelines with Fibonacci ratios.
Invalidation
Each count comes with a clear price that proves it wrong.
Context for patterns
Fitting Harmonic Patterns, triangles and corrections into a bigger picture.
Advantages and disadvantages
Advantages
- Gives a framework for where a trend may be in its life.
- Hard rules make a count falsifiable.
- Works on any market and timeframe.
Disadvantages
- Highly subjective; analysts often disagree.
- Easy to fit after the fact, hard to use in real time.
- Counts are constantly revised as price moves.
Going deeper
Read as far as you need. Each level builds on the one before it.
The three hard rules
Beginner
Wave 2 never retraces more than 100% of wave 1; wave 4 never retraces more than 100% of wave 3; and wave 3 always goes beyond wave 1's end and is never the shortest of waves 1, 3 and 5.1
Useful guidelines
Intermediate
Waves 2 and 4 tend to alternate in form — if one is sharp, the other is usually sideways — and corrections often end around the area of the previous fourth wave of smaller degree.3
Waves within waves
Advanced
Each wave breaks into smaller waves of the same pattern — the trend-direction waves into five, the corrective ones into three — so a complete impulse contains smaller cycles inside it.1 Getting the degree wrong is the commonest counting error.
Common mistakes
Ignoring the rules
A count that breaks a rule is simply wrong.
Forcing a count
If the waves are unclear, say so and stay out.
No invalidation stop
Every count needs a price that proves it wrong.
Trading without confirmation
Combine counts with trend, volume and support. See Confluence.
Check your understanding
Test yourself before moving on. Each answer comes with an explanation.
Key points to remember
- Markets are said to move in five waves with the trend and three against it.
- Three hard rules decide whether a count is valid.
- Wave 3 is never the shortest and is often the strongest.
- Counts are subjective and change as price develops.
- Always define where your count is wrong.
Frequently asked questions
Does Elliott Wave theory work?
What is the most important wave?
Can I use Elliott Wave on crypto or forex?
Further learning
- Fibonacci Retracement and Extension
The ratios used for wave targets.
- Dow Theory
The trend theory Elliott built on.
- Invalidation Level
Where a count is proven wrong.
Sources
This article is written in our own words. The sources below support the specific facts, rules and figures marked with a number in the text. Links open the original publisher’s page.
- StockCharts ChartSchool. Introduction to Elliott Wave Theory (opens in a new tab) Checked .
- CMC Markets. Elliott Wave Theory: Principles & Examples (opens in a new tab) Checked .
- StockCharts ChartSchool. Guidelines for Applying Elliott Wave Theory (opens in a new tab) Checked .
Read more elsewhere
- Trading Metrics (our sister site): Elliott Wave Theory (opens in a new tab)
Educational content, not financial advice. Examples use hypothetical prices and simplified costs; actual fees, margin rules and regulations vary by broker, market and country. Trading Metrics is our sister site, under the same ownership; we are not affiliated with any other publisher linked above. Last reviewed . Report an error or request a source credit.