$BTC Market Supply and Demand Changes: When the strength of sellers suddenly increases and surpasses that of buyers, prices will pull back. For example, a large sell-off by holders of a popular stock can cause the stock price to decline.

Macroeconomic Factors: Poor economic data, policy adjustments, changes in interest rates, etc., can lead investors to alter market expectations, triggering a pullback. For instance, rising interest rates may cause funds to flow back to banks, reducing funds in the stock market and causing stock prices to drop.

Industry or Company Specific Events: Company performance falling short of expectations, significant negative news, etc., can lead to a pullback in the prices of related assets. For example, if a company's financial report shows a decline in profits, its stock price may drop.

Profit-Taking Behavior: When prices rise to a certain level, earlier investors may sell to lock in profits, resulting in a temporary price decline.

Changes in Bull and Bear Forces: If the bullish forces that originally drove prices up weaken and the bearish forces strengthen, a pullback will occur.