Elliott Wave Basics

Waves inside waves

Ralph Nelson Elliott observed in the 1930s that stock markets move in recognizable patterns — not random walks, but rhythmic waves driven by crowd psychology. His framework became one of the most debated in all of technical analysis: loved by its practitioners, dismissed by its critics, and nearly impossible to ignore once you understand the structure. Murphy summarizes the core thesis:

The theory says that the stock market follows a repetitive rhythm of a five wave advance followed by a three wave decline. One complete cycle has eight waves — five up and three down. — Murphy, Technical Analysis of the Financial Markets

The basic 5+3 structure

An Elliott wave cycle has two phases:

Impulse phase (5 waves):

• Wave 1 — The initial move up. Often starts from a base and is easy to miss.
• Wave 2 — A correction that retraces part of Wave 1. Never retraces 100%.
• Wave 3 — Usually the longest and strongest. The crowd piles in.
• Wave 4 — A shallower correction. Cannot overlap Wave 1's territory.
• Wave 5 — The final push. Often driven by retail euphoria while smart money exits.

Corrective phase (3 waves, labeled A-B-C):

• Wave A — The first decline. Many mistake it for a dip to buy.
• Wave B — A rally that traps late bulls. Can be quite strong.
• Wave C — The decisive leg down. Usually as powerful as Wave 3 was on the upside.

After the A-B-C correction completes, the 5-wave impulse begins again at a higher degree. And here's the fractal part: each impulse wave (1, 3, 5) subdivides into five smaller waves. Each corrective wave (2, 4, A, B, C) subdivides into three. Waves within waves, all the way down to tick charts and all the way up to multi-decade supertrends.

The three inviolable rules

Elliott wave has hundreds of guidelines, but only three true rules that cannot be broken. If any are violated, the wave count is wrong:

1. Wave 2 never retraces more than 100% of Wave 1. If it does, your Wave 1 wasn't really Wave 1.

2. Wave 3 is never the shortest of the three impulse waves (1, 3, 5). It can be the longest (common) or second-longest, but never the shortest.

3. Wave 4 never enters the price territory of Wave 1. The low of Wave 4 must stay above the high of Wave 1 (in an uptrend). If it overlaps, you're likely in a corrective pattern, not an impulse.

These three rules are the gatekeepers. Everything else — where Wave 3 extends to, what shape the correction takes, which wave is longest — falls under guidelines that admit exceptions. But these three are non-negotiable.

Murphy adds a critical point about corrections:

One of the most important rules to remember is that a correction can never take place in five waves. — Murphy, Technical Analysis of the Financial Markets

If a decline unfolds in five waves, it is not a correction within a larger uptrend — it's either the start of a new bearish impulse or a nested sub-wave within a larger correction. The five-versus-three distinction is how you determine whether a move is with the trend or against it.

The Fibonacci connection

Elliott's framework doesn't just describe wave shapes — it specifies where waves tend to end, using Fibonacci ratios. Murphy on the origin:

Elliott stated in Nature's Law that the mathematical basis for his Wave Principle was a number sequence discovered by Leonardo Fibonacci in the thirteenth century. — Murphy, Technical Analysis of the Financial Markets

The key Fibonacci relationships in wave analysis:

• Wave 2 typically retraces 50% or 61.8% of Wave 1.
• Wave 3 often extends to 161.8% of Wave 1's length. If Wave 3 is extended (the most common case), it can reach 261.8%.
• Wave 4 typically retraces 38.2% of Wave 3.
• Wave 5 often equals Wave 1 in length, or extends to 61.8% of the distance from the start of Wave 1 to the end of Wave 3.
• Wave C often equals Wave A in length, or extends to 161.8% of Wave A.

These are tendencies, not laws. But they give Elliotticians specific price targets to watch — zones where a wave is "likely" to end based on the Fibonacci extension/retracement of the previous wave. If you completed the Fibonacci Retracements lesson, you've already built the mathematical toolkit; Elliott wave gives you a narrative framework for applying it.

Why Elliott wave is controversial

The critics have fair points:

1. Subjectivity. Two skilled Elliotticians can look at the same chart and produce completely different wave counts. The rules constrain the space, but the guidelines leave enough room for disagreement.

2. After-the-fact labeling. It's easy to label waves in hindsight. In real time, you often can't confirm which wave you're in until the pattern is mostly complete.

3. No falsifiability. If a wave count doesn't work, practitioners simply relabel — they don't abandon the theory. This makes it unfalsifiable in the strict scientific sense.

The defenders counter that the fractal structure and Fibonacci targets produce real, measurable clustering of turning points — too frequent to be chance. Both sides have decades of argument behind them.

For our purposes: understand the structure, use the Fibonacci targets as additional confluence with other tools (support/resistance, divergences, volume), and never let the wave count override clear signals from price action.

Practical application

The most actionable Elliott wave setup for a non-specialist:

1. Identify a completed 5-wave impulse. Wait for the A-B-C correction.
2. Enter near the end of Wave C, at a Fibonacci support level (typically the 61.8% retracement of the entire 5-wave move).
3. Confirm with RSI divergence — if Wave C makes a new low but RSI doesn't, the correction is likely ending.
4. Target the next Wave 3 as the primary profit zone.

This doesn't require mastering every alternate wave count. It simply uses the Elliott framework as a timing filter within a broader trend-following approach.

Quick check

What you now know

• Elliott wave = 5-wave impulse + 3-wave correction = 8 waves per cycle.
• Three inviolable rules: Wave 2 never retraces 100% of 1; Wave 3 is never shortest; Wave 4 never enters Wave 1 territory.
• Corrections move in threes, impulses in fives — this distinction separates trend moves from counter-trend moves.
• Fibonacci ratios provide the price targets: 61.8% retracements for Wave 2, 161.8% extensions for Wave 3.
• The framework is powerful but subjective — use it as confluence with other tools, not as the sole decision-maker.

Next: Measured Moves — using pattern height and the AB=CD structure to project price targets, grounded in Murphy's geometric method and classical pattern measurement rules.