Technical Analysis:
Trend Identification: If GBP/USD has been in a downtrend or showing signs of weakening, traders might predict further declines.
Support and Resistance Levels: If the price is approaching a key resistance level and struggling to break through, there could be a short-term reversal, leading to a bearish move.
Indicators: Indicators like the Relative Strength Index (RSI) or Moving Average Convergence Divergence (MACD) might suggest that the pair is overbought or is showing bearish divergence, prompting a 100-pip decline.
Fundamental Analysis:
Economic Data: Weak economic data from the UK (e.g., lower GDP growth, poor employment numbers) could weaken the GBP against the USD.
Interest Rates and Monetary Policy: If the Bank of England signals that interest rates might not rise, or the Federal Reserve continues with a hawkish stance, this could push GBP/USD lower.
Geopolitical Events: Political instability in the UK or global market risk-off sentiment can also drive the pound lower.
Market Sentiment:
Risk Appetite: In times of heightened global uncertainty, the USD often strengthens as a "safe haven," which could cause GBP/USD to drop.
Positioning: If traders are heavily long on GBP/USD, a shift in sentiment or a change in the fundamental backdrop could trigger a correction of 100 pips or more.