Why Bitcoin and altcoins fell today - Analysis of key factors

Bitcoin fell more than $1,500, dragging altcoins such as Ethereum, Solana and Cardano down 5-10%. Analysts believe that macro pressure, leverage positions and technical fluctuations are key factors. The high holdings of Bitcoin futures resulted in a liquidation of $2 billion, which was seen as a healthy adjustment. Investors avoid risks before the Fed's resolution, and altcoins have been hit hardest. Nvidia's pre-market sell-off and Nasdaq's decline have intensified cryptocurrency market sentiment. Despite the decline in the market, many believe it is part of the bull cycle, and volatility in the fourth quarter will bring new opportunities.