Why Is a Stock Halted? Trading Halts and Market Circuit Breakers Explained
A trading halt means trading in a specific stock — or the entire market — has been temporarily paused. Halts can last minutes or days, depending on the cause. Understanding the different types can help you distinguish between a routine volatility pause and a serious regulatory action.
Types of Trading Halts
Volatility Pause (Limit Up/Limit Down)
A stock that moves too far, too fast triggers a 5-minute pause. This is the most common type and is designed to let the market absorb new information. Trading resumes automatically after the pause.
News-Pending Halt
The exchange halts a stock ahead of major news — mergers, FDA decisions, regulatory announcements — to give all investors equal access to the information before trading resumes.
SEC Trading Suspension
The SEC can suspend trading in a stock for up to 10 business days under federal securities laws when it believes the public may be at risk — for example, due to questions about the accuracy of company disclosures.
Market-Wide Circuit Breaker
If the S&P 500 falls by specific thresholds (7%, 13%, 20%) in a single day, the entire market halts. A 7% or 13% decline triggers a 15-minute pause. A 20% decline halts trading for the rest of the day.
What Happens to Existing Orders During a Halt?
Open orders are not canceled, but they also do not execute. You can typically cancel an order during a halt, and it will be removed. New orders may be accepted but will not execute until trading resumes. When trading restarts, there is usually a reopening auction to establish a new price.
How to Verify a Halt
The Nasdaq Trader website and NYSE both publish real-time halt information including the halt code, reason, and expected resumption time. Your broker may also display halt notices. Do not confuse a halt with a broker-specific outage or a normal market closure — check the official exchange sources.