A period of time when a stock market sector that had previously been struggling begins outperforming competition and becomes a market leader. A market rotation can be long or short-term. These rotations are typically triggered by an external event. The scale of the event determines if the rotation is a momentary event or a full-scale change with lasting implications.
We don't know everything about the markets. We're just devoted to learners. Taken from those smarter than ourselves, here's how we define Market Rotation.