Bitcoin dominance is the percentage of the total cryptocurrency market capitalization that is held in $BTC . When $BTC dominance rises, it often indicates that investors are moving funds from altcoins into Bitcoin, suggesting a preference for safety and stability during uncertain market conditions. This can lead to a decline in the prices and trading volumes of altcoins, as they lose capital and investor attention. Conversely, when $BTC dominance falls, it may signal a growing interest in altcoins, often during bullish phases when investors seek higher returns from smaller-cap coins. Therefore, tracking Bitcoin dominance can provide valuable insights into market sentiment and potential shifts between Bitcoin and altcoin investment trends.