Rapid broad participation — and its failures.
| Concept | Explanation | |---|---| | Breadth thrust | Rapid, unusually broad improvement in participation. | | Bullish breadth divergence | Participation improves before the index confirms. | | Bearish breadth divergence | Participation weakens while the index remains strong. | | Confirmation | Index and breadth move in the same direction. | | Failure | A breadth improvement fades without price follow-through. |