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1990issue C061-5

Breakaway versus exhaustion: classify the skip from both sides

A gap is the untraded interval created when the next session opens beyond the prior session's range. Archive case studies classify that hole from the price-volume boxes on each side, then treat a breakaway or exhaustion reading as one facet of the chart.

  • Gap analysis treats an untraded price band between sessions as a market non-event that can be as informative as the prices that did trade.
  • A breakaway gap is read when price leaves a sideways area from an ordinary box into a tall, thin easy-movement box.
  • An exhaustion gap is read when easy movement precedes the skip and a short, wide difficult-movement box follows it, marking a stall after an extended run.
  • The case-study charts classify each hole from the change in box shape and still require a check against other structure.
Entries in this reading3 entries

What a gap is

A gap is the skipped price interval created when the next session opens beyond the prior session's traded range, in either direction. Gap analysis treats that untraded price band as a market non-event that can be as informative as the prices that did trade.

The hole is not classified from the skip alone. It is classified from the price-volume shape on either side of the skip.

Breakaway and exhaustion labels

A breakaway gap is the skipped interval that appears as price leaves a sideways area and is read as the start of a directional move. On price-volume box charts, that reading is used when an ordinary-shaped box precedes the skip and a tall, thin easy-movement box follows it. Easy movement is a tall, thin price-volume box in which price covers a wide range without needing heavy volume.

An exhaustion gap is identified when an easy-movement box precedes the skip and a short, wide difficult-movement box follows it, marking a stall after an extended run. Difficult movement is a short, wide price-volume box in which heavy volume produces little net price progress.

The first case-study chart

In the first case-study chart, successive gaps are classified by the change in box shape across each skip. The sequence includes an upside departure from a range, later stalls that precede declines, and a downside departure from congested square boxes.

Editorial reading: the departures match the breakaway pattern of leaving a sideways area. The stalls match the exhaustion pattern of easy movement giving way to difficult movement. Each label stays open until later structure supports or contradicts it.

The second case-study chart

In the second case-study chart, a late downward gap after an extended advance, with weaker support and a broken rising trendline, is classified as a downside breakaway rather than durable support.

Editorial reading: how late the skip appears in the advance is not enough to name it. The flanking structure, weaker support, and the broken rising trendline keep the downside breakaway label in place, still as a hypothesis that later structure can disprove.

One facet of the chart

Gap readings are presented as one chart facet that must be checked against other structure, not as a complete standalone system. Editorial reading: that is why a breakaway or exhaustion label should remain a working hypothesis rather than a finished conclusion.

Educational research material, not investment advice. Historical source context does not establish present-day performance.
2 of 6 in the Exhaustion gap track
19901-4 pp.Next on Exhaustion gapConstructing gap signals from skipped price zonesIgnore blanks narrower than ordinary bid-offer spacing of one-eighth to one-half point.
All readings on this track · 6 readings
  1. 1987Constructing price gap classifications from follow-through
  2. 1990Breakaway versus exhaustion: classify the skip from both sides
  3. 1990Constructing gap signals from skipped price zones
  4. 2004Constructing gap classifications from price context
  5. 2015Exhaustion gap entry, hold, and exit rules as one procedure
  6. 2016Four gap types as falsifiable trade hypotheses
All 6 readings tagged Exhaustion gap
Also on Exhaustion gap5 readings