PRZ (Potential Reversal Zone) and Stop Loss

The pattern points to a zone, not a price. The stop turns that zone into a trade.

Every harmonic pattern completes at a Fibonacci level, but the completion is rarely a single price. Multiple Fibonacci measurements — the retracement of XA, the extension of BC, the projection of CD — cluster into a zone. That zone is the Potential Reversal Zone (PRZ), and it is the single most important concept in harmonic trading.

What the PRZ really is

The PRZ is a band of prices where several Fibonacci measurements converge. A textbook Gartley, for example, may have:

The 0.786 retracement of XA at $84.28.
The 1.272 extension of BC at $84.40.
The 1.618 projection of CD at $84.15.

These three levels cluster between $84.15 and $84.40 — a $0.25 PRZ. A cluster of three or more Fibonacci measurements within a tight band is a high-quality PRZ. A single ratio alone is a weak PRZ.

Building the PRZ

When you spot a harmonic structure, project three measurements:

The retracement of the defining leg (e.g., 0.786 of XA for a Gartley).
The extension of BC (e.g., 1.618 of BC).
The projection of CD.

Where they overlap is the PRZ. The tighter the overlap, the higher the conviction.

Entry within the PRZ

Do not enter on a limit order at the first Fibonacci level. Instead:

Let price reach the PRZ.
Wait for a reversal confirmation bar — a hammer, engulfing, or VSA footprint.
Enter on the close of the confirmation bar.

This filters out PRZs that price slices through without reacting.

Stop-loss placement

The stop goes just beyond the PRZ, beyond the most extreme Fibonacci projection. General rules:

Pattern	Stop location
Gartley	Just beyond X
Bat	Just beyond X
Butterfly	Just beyond D
Crab	Just beyond D
Cypher	Just beyond C
Shark / 5-0	Just beyond C

Because extension patterns (Butterfly, Crab) have wider stops beyond D, position size must be reduced to keep dollar risk constant.

The wider stop problem

A Crab's stop beyond D may be many times wider than a Gartley's stop beyond X. If you trade the same share count, your dollar risk explodes. The rule:

Position size = (Account × Risk%) ÷ (Entry − Stop)

A wider stop demands a smaller position. This is non-negotiable for survival.

The invalidation rule

If price closes beyond the stop level, the pattern has failed. Exit immediately. Do not "give it room" — harmonic patterns that fail often fail hard, because the geometry is broken and there is no structural reason for support nearby.

Scaling out

A disciplined exit strategy:

Close 1/3 at Target 1 (0.382 of CD).
Move stop to break-even on the remainder.
Close 1/3 at Target 2 (0.618 of CD).
Trail the final 1/3 or close at the origin point.

This locks in gains while leaving room for the larger reversal.

The mindset

The PRZ is a zone of probability, not certainty. Many PRZs fail. Your edge comes from trading only high-quality clustered PRZs, entering on confirmation, and cutting losses the moment the geometry breaks. Reversals are exciting; survival is what pays.

Next: the traps and validity checks that separate real harmonic patterns from wishful geometry.