Circuit breaker

A circuit breaker halts trading when a price moves beyond a threshold in a short period, giving participants time to reassess. Halts interrupt momentum-based schemes but can also be triggered deliberately.

instruments and markets · updated 2026-09-08

See also

• Limit up, limit down — Limit up, limit down is the US equity mechanism that prevents trades outside a moving price band and pauses trading when the band …

Terms that refer here

Limit up, limit down

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