Recently, I’ve been observing the performance of btc.d and noticed an interesting phenomenon: many people don’t understand why Bitcoin tends to fall when btc.d rises, while altcoins drop even more sharply. Let me explain what’s really going on behind this.

First, you need to understand what btc.d is. Simply put, it’s the proportion of Bitcoin’s market capitalization relative to the entire crypto market. When btc.d rises, it doesn’t necessarily mean Bitcoin’s price is going up; it means Bitcoin’s share of the total market is increasing. This is a key point, and many people tend to misunderstand it.

So why does btc.d go up while Bitcoin’s price drops? This is actually quite common. Imagine the whole market is declining, but Bitcoin’s decline is relatively small, while altcoins are falling very sharply. In this case, Bitcoin’s share of the total market cap increases, and btc.d naturally rises. Although Bitcoin’s absolute value has decreased, its market share has actually expanded in relative terms.

Another reason is capital flow. When the market is unstable, investors often withdraw funds from riskier altcoins and move into relatively safer Bitcoin. During this process, btc.d continues to rise because capital is concentrating into Bitcoin. Investors see Bitcoin as a relatively safe haven, even when the overall market is falling.

Why do altcoins drop so badly? Mainly for a few reasons. First, altcoins are inherently more volatile, especially smaller tokens, which tend to fall several times more than Bitcoin when the market turns sour. Second, altcoins generally have lower liquidity and less attention than Bitcoin; once people start selling off, there’s a lack of buyers to absorb the sell-off, causing prices to plummet. Third, when funds shift from altcoins to Bitcoin, this process itself accelerates the decline of altcoins.

To sum up simply: an increase in btc.d mainly reflects a decrease in market risk appetite. Investors seek safety, so money flows into Bitcoin. Although Bitcoin is also falling, its decline is smaller, making it the strongest asset. Altcoins, due to their higher risk and lower liquidity, become the targets of selling in this environment. That’s why you see btc.d continually hitting new highs while altcoins keep dropping.

Once you understand this logic, you can better judge the market’s risk situation. When btc.d keeps rising, it indicates increasing market uncertainty, with everyone moving toward safer assets. If you’re still chasing high-altcoin prices at this point, the risk is quite high. Conversely, when btc.d starts to decline and funds begin flowing back into altcoins, that could be an opportunity for altcoin investors.