Bitcoin (BTC) fell 1% at the opening of Wall Street on September 18, ahead of the US Federal Reserve's interest rate decision.

- Traders are expecting a "big day" with the FOMC meeting and press conference.

- The size of a possible rate cut is being discussed: 0.25% or 0.5%.

- CME Group data shows the market is leaning towards a bigger cut.

🔥 BTC volatility is expected to be high in the coming days, so hold on tight!