Great question, and it's one of those metrics that seems confusing at first but is really useful once you understand it. Bitcoin dominance basically shows Bitcoin's market cap as a percentage of the entire crypto market. When dominance is rising (say above 60%), it usually means investors are playing it safe and moving into Bitcoin, often during uncertain times. When it's falling (towards 40-50%), money is flowing into altcoins, which can signal the start of "altcoin season." The key is watching the trend, not daily moves. I found a really clear explanation of bitcoin dominance that breaks down exactly how to read the charts, what different percentage ranges mean historically, and how to use it for portfolio decisions https://paybis.com/blog/glossary/what-i … dominance/ . Much more useful than just guessing.