Scallops, Descending and Inverted

Core idea

A descending and inverted scallop is the bearish mirror of the inverted ascending scallop, geometrically flipped. The left side begins at a minor high, price drops sharply to a domed bottom (point B, the lowest point), then partially recovers to a right low that sits above the bottom but still below the left starting point (A > C > B). The overall silhouette is an upside-down reversed J — a tilted scoop that breaks downward as the next leg of the bearish trend asserts itself.

This is the rarest of the four scallop orientations. Bulkowski's data on the pattern is thinner than the other three variants, and the published statistics show modest performance with a higher dependency on macro context. The pattern's value is structural: when it appears in a confirmed downtrend, it provides a tight entry-and-stop framework for short-side swing traders, and the dome bottom (B) becomes the key support level whose break confirms the next decline.

Bulkowski's framing: The four scallop orientations capture the four ways a trend can pause and resume. The descending-and-inverted version is the bearish-trend pause where price tries to rally, fails, and resumes lower. The asymmetric A-B-C geometry is what distinguishes it from a small double bottom or a simple rounding pattern.

Why it matters

In a strong downtrend, the most common mistake is buying the bounce. Descending and inverted scallops are exactly the bounce structures that fail. A trader who can read the pattern in real time recognises the C-low as a lower high (not a new uptrend) and either short-sells the failure or steps aside to wait for the next leg.

Why the dome bottom matters

Where the descending scallop (the non-inverted variant) has a bowl-shaped low between two rims, the inverted version has a dome-shaped bottom — a brief, rounded period of consolidation at the pattern's nadir. That dome is where short-sellers accumulate before the breakdown; it is the structural support whose break is the trade trigger.

Distinguishing from a double bottom

A double bottom has two well-separated lows at nearly the same price. A descending-and-inverted scallop has a single rounded dome bottom with no second low. If you find yourself drawing two distinct lows, you are not looking at a scallop — you are looking at a small double bottom, which in a downtrend may signal reversal rather than continuation.

Key takeaways

Mental model

Copy sourceZoom

Practical application

Example

A financial-services stock has declined from $52 to $38 over four months in a confirmed bear-market regime. The stock prints a minor high at $42 (point A) as part of a sector-wide rebound that fizzles. Over the next three weeks, price drops sharply to $36, where it spends ten trading days oscillating in a tight $35.50–$36.80 range — a smooth dome bottom (point B at $35.50).

The stock then rallies for two weeks to $39.20 (point C). C sits above B by $3.70 and below A by $2.80 — the textbook A > C > B geometry. Volume during the recovery is below the dome-bottom volume, suggesting the bounce is mechanical rather than accumulation.

A trader recognises the descending-and-inverted scallop in a bear market — a high-quality short setup. Sell-stop placed at $35.20, just below the dome bottom. Stop placed at $39.50, just above C. Risk per share: $4.30.

Two weeks later, the stock closes at $34.80 on volume above the dome-bottom average. Short fills at $35.20. Eleven days after the breakdown, the stock rallies to $35.10 — a textbook pullback to the breakdown level — and reverses lower.

Over the next five weeks, the stock declines to $28.40, a 19% drop from entry. The trader scales out half at $30.50 (booking a $4.70 gain) and trails the rest with a 10-day high stop, eventually exiting at $29.20 when the trend rolls into a bottom-fishing rally. Blended exit: ~$29.85, a $5.35 gain against $4.30 risk — about 1.25-to-1.

That risk-reward is modest, reflecting the pattern's compact A-B-C geometry: tight stop, tight target. The setup's strength is reliability inside a bear market, not the magnitude of any single move. A trader who runs a book of these in a bear regime compounds many small wins; a trader who tries the same shape in a bull market gives those gains back.

Related lessons