Heavy market sell-offs and broad declines across equity indices are typically triggered by a combination of macroeconomic headwinds, such as persistently high interest rates, tightening central bank monetary policies, rising inflation concerns, or sudden geopolitical conflicts that disrupt global supply chains. Additionally, sector-specific contractions, disappointing corporate earnings guidance, and shifts in institutional risk appetite can cause widespread panic selling, forcing asset managers to deleverage and reallocate capital away from growth-oriented or vulnerable equities toward safer defensive havens.