Taking a look at the fall, the factors affecting bitcoin's decline are increasingly complex from different dimensions. Bitcoin's fall from $40,000 to its nadir of $32,000 is undoubtedly driven by the linkage of THE US stock market and the expectation of the Federal Reserve's monetary policy. On the day before the Fed's decision, U.S. stocks opened down, but bitcoin rebounded, petering out at $38,900, an important sign that the broader market is starting to move independently of U.S. stocks.