Broad market downturns and sharp pullbacks across equity indices typically occur due to a convergence of macroeconomic pressures, shifting monetary policies, geopolitical tensions, or sudden spikes in inflation and interest rates. When central banks signal tighter monetary conditions or investors react to disappointing economic data, market liquidity contracts, prompting institutional investors to reduce risk exposure. This triggers widespread selling across multiple sectors, ranging from high-growth technology equities to cyclical industries, as market participants rebalance portfolios amid rising economic uncertainty.