Bearish Island Reversal
A bearish island reversal forms when a gap up is followed, after one or more sessions, by a gap down, leaving a cluster of bars stranded above the surrounding price action. Everyone who bought in the island zone is immediately offside, creating overhead supply.
- Bias
- Bearish
- Category
- Short Setups
- Scan cadence
- Every close
What has to be true for a Bearish Island Reversal to trigger
- A gap up into an isolated zone
- One or more sessions trading in that zone
- A gap back down out of it
- Both gaps remaining unfilled
How PatternGrade grades it
Larger gaps on both sides and a cleaner, tighter island raise the grade.
Every scanner grades its hits A+, A or B from the pattern's own measurable structure. The grading is deterministic — the same chart always produces the same grade. It describes how closely the chart matches the pattern, not how likely anything is to happen; no hit rate or probability is attached to a grade. The reasoning is set out in the methodology.
What a Bearish Island Reversal looks like in practice
A stock gaps up from $41.30 to $44.80 on an upgrade and then trades between $44.20 and $46.10 for five sessions. On the sixth it gaps down from $44.60 to $41.90, below the bottom of that five-day cluster and back into the pre-gap range. Those five sessions now sit alone above the surrounding action, with untraded space on both sides.
How a Bearish Island Reversal fails
The second gap fills and price returns to the island. That collapses the pattern entirely. The isolation that defined it is gone, leaving a volatile two-week range. Islands are rare and easy to over-identify: a small gap on one side and a marginal one on the other is not an island, and loose criteria manufacture false ones.
What this pattern is telling you
Island reversals are rare and news-driven on both ends. The signal arrives only after a large move has already happened.
PatternGrade is not a financial advisor and does not give buy or sell recommendations. Targets and stops shown on a pattern are reference levels derived from its geometry, not advice.
How to scan for Bearish Island Reversal setups
PatternGrade rescans every liquid US stock (~4,500 names) for this pattern after every close and returns the hits as a graded list, with the pattern drawn on each chart, so you review setups rather than hunt for them.
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Bearish Island Reversal FAQ
What is a bearish island reversal?
A group of sessions isolated by a gap up on one side and a gap down on the other, stranding buyers and marking an abrupt reversal from up to down.
What is a bearish island reversal?
A cluster of sessions isolated above the surrounding price action by a gap up on one side and a gap down on the other. Price gaps away, trades in isolation for a few sessions near the highs, then gaps back down, stranding everyone who bought in between.
How many sessions can the island contain?
Anywhere from one to a couple of weeks. A single-session version is sometimes called a one-day reversal. The longer the island, the more holders are trapped above, which is the argument for it mattering.
Are bearish island reversals reliable?
When they occur cleanly they are among the more visually convincing topping patterns, since a whole group of buyers is stranded at prices that no longer trade. The difficulty is that clean examples are genuinely rare, and loosening the gap criteria to find more destroys what makes the pattern meaningful.
Does the second gap need to fully clear the island?
Yes. That is what creates the isolation. A second gap that only partially clears the cluster leaves no untraded zone on that side, and the pattern does not apply. PatternGrade requires both gaps to be genuine.
Patterns a Bearish Island Reversal is mistaken for
- Island Reversal
- The bullish mirror at a bottom: a gap down followed by a gap up, stranding bars below.
- Gap Down
- A single gap. An island requires two opposing gaps with bars stranded between them.
- Bearish Breakaway Gap
- Breakaway gaps continue a move out of a range. An island's two gaps point in opposite directions and mark a reversal.
- Double Top
- A double top has two discrete peaks weeks apart. An island's stranded cluster is a few consecutive sessions.
Last reviewed . Structure and grading for the Bearish Island Reversal are reviewed against the scanner's own rules.