Technical Definition
The Island Reversal pattern is a strong reversal pattern formed by two gaps in opposite directions, which isolate a cluster of price action in between, creating an “island” on the chart. The first gap occurs in the direction of the existing trend, while the second gap occurs in the opposite direction, trapping traders and confirming a sharp change in trend.
Imagine a group of traders stranded on a small island, cut off from the mainland by deep water (gaps) on both sides. Once the second gap opens, they are trapped, and the price reverses violently.
The prevailing trend has been abruptly rejected
Market Psychology
Trend Confidence
The prevailing trend appears strong. Market participants are heavily positioned in the trend direction.
Overcommitment
The first gap encourages late participation. Confidence peaks as traders chase price.
Sentiment Shock
A sudden shift—often driven by news or re-evaluation—causes price to gap in the opposite direction, trapping participants.
Forced Repositioning
Trapped traders rush to exit, accelerating price movement in the new trend direction.
Pattern Anatomy
First Gap
Price gaps in the direction of the existing trend, often driven by strong sentiment, news, or momentum. This gap reinforces trend confidence.
Island Formation
After the first gap, price trades in a tight range for a few sessions. This isolated trading zone forms the “island,” visually separated from prior price action.
Second Gap (Reversal Gap)
Price gaps sharply in the opposite direction, leaving the island isolated between two gaps. This gap signals a decisive rejection of the previous trend.
Post-Reversal Move
After the second gap, price often moves strongly in the new direction, with limited retracements in the early phase.
Pattern Rules
Prior Trend
A clear prior trend must exist.
First Gap
A gap must form in the direction of the trend.
Isolation
Price must trade in an isolated range after the first gap.
Second Gap
A second gap must occur in the opposite direction.
Follow-Through
Follow-through after the second gap increases reliability.
Tactical Execution
Enter on second gap
Stop loss beyond island
Target gap fill area
Signal Confirmation
- Strong acceptance beyond the second gap
- Expansion in volume during the reversal gap
- Failure of price to return into the island range
- Sustained movement in the new trend direction