Bases, pivots & breakouts

Big winners don’t go up in a straight line. They advance, then pause for weeks or months in a base — a consolidation where impatient holders leave and institutions quietly accumulate. When the stock finally clears the base’s resistance level (the pivot) on heavy volume, supply overhead is exhausted and the next advance can start.

That’s the entire logic of chart-based entries: the base is where risk is defined, the pivot is where the odds are best, and volume is the evidence that institutions — not just you — are buying.

Cup with handle

The most studied pattern. Price corrects 15–30% from a high, rounds out a U-shaped bottom over at least six weeks or so, recovers toward the old high, then drifts down in a short, quiet handle — one last shakeout of weak holders — before breaking out.

Cup with handle: the handle's high is the pivot; volume contracts in the handle and expands on the breakout.

What makes it sound: the handle forms in the upper half of the base, drifts gently down (an upward-wedging handle attracts no shakeout and fails more often), and volume dries up inside it.

Flat base

Often the second base of a run: after a breakout gains 20%+, the stock moves sideways in a tight range — usually no deeper than about 15% — for five weeks or more. Tightness is the point: holders aren’t leaving even when the stock goes nowhere.

Flat base: shallow, sideways, and boring — which is exactly what institutional support looks like.

Double bottom

A W-shaped base. The second leg down undercuts the first low — that undercut is the feature, not a flaw: it stops out the last weak holders before the real move. The pivot sits at the middle peak of the W, not the old high.

Double bottom: the undercut of the first low clears out weak holders; the middle peak is the buy point.

The pivot, the buy zone, and volume

Three rules apply to every pattern above:

• Buy as the stock clears the pivot, not before. Inside the base nothing is proven; below the pivot the shakeouts are aimed at you.
• Stay inside the buy zone — the app’s default is 5% above the pivot, configurable. Beyond it the stock is extended: a routine pullback to the pivot would exceed a normal stop. The app’s mistake patterns will show you what chasing extended entries has actually cost you.
• Demand volume. A real breakout should trade meaningfully heavier than the stock’s average day — 40–50%+ above average is the usual bar. A new high on quiet volume is a breakout nobody showed up for, and those fail at a much higher rate.

What weakens a base

• Wide and loose. Big weekly swings, no tightening — the opposite of accumulation. Compare it mentally against the flat base above.
• Late-stage. Base count matters: the third or fourth base of a long advance is obvious to everyone and fails far more often than the first or second.
• Formed against the market. A base completing while the market regime is in correction is fighting the current — most breakout failures cluster in weak markets, which is why the buy checklist asks about the market first.

These three are the workhorses. The rarer continuation patterns — high tight flag, ascending base, base on base — plus the add-on setups and topping formations are cataloged in the chart pattern field guide.

Caveats

Pattern names make this sound more precise than it is: real bases are noisy, and two experienced readers will sometimes draw different pivots on the same chart. Record the pivot you acted on in your trade journal — the app grades your entries against your recorded pivot, and its worked examples in the glossary use the same definitions. Our wording of publicly documented charting concepts; educational reference, not investment advice.