Bitcoin experienced a significant decline, dropping back below the $90,000 mark, as the U.S. dollar fell to its lowest value in seven weeks following the Federal Reserve's decision to cut interest rates. This combination of factors has contributed to increased volatility in the cryptocurrency market, leading to uncertainty among investors and traders alike. The weakening of the dollar typically affects Bitcoin's performance, as both assets are often seen as alternative stores of value.
source: https://www.coindesk.com/markets/2025/12/11/bitcoin-stumbles-back-below-usd90k-as-dollar-sinks-to-7-week-low-after-fed-rate-cut