Which US stock exchange experienced the first recorded trading halt caused by a market-wide circuit breaker in 1997?

The New York Stock Exchange experienced the first recorded trading halt caused by a market-wide circuit breaker in 1997.

On October 27, 1997, the Dow Jones Industrial Average fell 554.26 points, or 7.18%, amid global market turmoil connected to the Asian financial crisis. The decline triggered the NYSE’s newly established circuit-breaker system, halting trading temporarily.

Circuit breakers were introduced after the 1987 crash, when concerns grew that automated selling and rapidly changing prices could amplify panic. The rules used percentage thresholds and time-based pauses, although the exact levels and procedures changed over time.

The 1997 halt is sometimes confused with the 2010 Flash Crash, which affected markets through a much faster intraday plunge and led to additional safeguards. A trading halt does not mean the exchange has permanently closed; it is a temporary pause intended to let information and orders stabilize.