Help CenterTrading in US marketUS Market Trading RulesCircuit Breaker

Circuit Breaker

Circuit breakers temporarily halt trading on an exchange or in individual securities when prices hit pre-defined levels to curb panic-selling on U.S. stock exchanges and excessive volatility – large price swings in either direction – in individual securities.

Market Wide Circuit Breaker	Addresses market-wide volatility. Halts all NMS securities when S&P 500 Index declines by the following levels
	S&P 500 Index Trigger	Open-3.25pm	3:25pm-Close
	-7%	Halt-for 15mins	Will not halt
	-13%	Halt-for 15mins	Will not halt
	-20%	Halt-Remainder of the trading day	Halt- Remainder of the trading day

Limit Up Limit Down	Addresses volatility within a single stock. Sudden price beyond the guard rails will first result in a second “Limit State.” Followed by a 5 minute” Trading Halt,” if the NBBO does not return inside the guard rails
		Open-3:35pm	3:35pm-Close
	Tier 1 Stocks > $3.00 (S&P500, Russell 1000, high volume ETPs)	5%	10%
	Tier 2 Stocks > $3.00 (All other stocks and ETPs >$3)	10%	10%
	Stock prices $0.75 -$3.00	20%	40%
	Stock prices < $0.75	75%	150%

"Please refer to the U.S. SECURITIES AND EXCHANGE COMMISSION: Stock Market Circuit Breakers

U.S LULDs

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