According to Crypto Rover, a spike in memecoin dominance historically signals a reliable Bitcoin top, suggesting traders should consider taking profits when this trend appears (source: Crypto Rover on Twitter, June 9, 2025). This trading strategy leverages altcoin sector rotation, as heightened memecoin activity often occurs during the final phase of crypto bull markets, increasing risk of a correction in Bitcoin prices. Monitoring memecoin dominance can therefore provide actionable insight for Bitcoin traders seeking to maximize gains and manage risk.