Oct 19, 1987
Black Monday — First Televised Market Crash
Portfolio insurance programs, designed to hedge institutional equity exposure, issued automatic sell orders as prices fell. Those sell orders pushed prices lower, triggering more sells. Meanwhile, cable news carried the crash live into living rooms for the first time in history. The feedback loop between falling prices, algorithmic selling, and televised fear compressed a typical multi-day panic into a single trading session.
Dow −22.6% in single sessionRead →