Sector rotation is capital and attention moving from one crypto theme cluster to another.
Example: from L2s into memes, or from DeFi into AI. Rotations can last days to months.
In research workflows, Sector rotation is usually interpreted with Crypto narrative, Altcoin season, and Social volume rather than as a standalone signal. Acceleration often matters more than absolute mention counts. Loud but fading hype is a different setup from quiet but rising chatter.