On February 19, 2026, the Pakistan Stock Exchange (PSX) faced a historic crash, with the benchmark KSE-100 Index dropping over 6,600 points, marking its worst single-day decline ever. The index closed at 172,170 points, down 6,683 points or 3.74%. This drastic fall was primarily driven by escalating geopolitical tensions between the United States and Iran, which heightened investor fears and led to massive selling pressure. The trading session saw significant losses across key sectors, including banking, cement, and oil and gas, with 384 stocks declining compared to only 31 advancing, underscoring the market's negative sentiment (PSX Terminal). The trading volume was substantial, with 539.9 million shares traded, reflecting heightened activity driven by panic selling (Business Recorder).