HomeFinance & EconomicsFinancial MarketsWhat is Circuit Breaker?
Finance & Economics·1 min·Updated Mar 11, 2026

What is Circuit Breaker?

Circuit Breaker

Quick Answer

A Circuit Breaker is a regulatory measure used in financial markets to temporarily halt trading on an exchange when prices fall sharply. This mechanism helps prevent panic selling and allows investors to assess the situation before trading resumes.

Overview

A Circuit Breaker is designed to maintain orderly trading during times of extreme market volatility. When a stock index drops by a certain percentage within a specific time frame, trading is automatically paused for a short period. This pause gives investors a chance to reflect on the market conditions without the pressure of continuously falling prices. For example, during the market crash in March 2020 due to the COVID-19 pandemic, Circuit Breakers were triggered multiple times as stock prices plummeted. These breaks allowed traders to step back and reassess their strategies. By implementing such measures, exchanges aim to prevent a complete market collapse and restore confidence among investors. Circuit Breakers are crucial for maintaining stability in financial markets. They help to reduce panic and allow for a more rational response to sudden market declines. By providing a cooling-off period, these mechanisms play a significant role in protecting both investors and the overall economy.


Frequently Asked Questions

Circuit Breakers are triggered when a stock index falls by a predetermined percentage, typically set by the exchange. The thresholds can vary, but common levels are 7%, 13%, and 20%, each leading to different lengths of trading halts.
After a Circuit Breaker is triggered, trading is paused for a specified duration, usually ranging from 15 minutes to the rest of the trading day, depending on the severity of the decline. Once trading resumes, investors can make more informed decisions based on the latest information.
Circuit Breakers typically apply to major stock indices rather than individual stocks. However, individual stocks can have their own trading halts based on specific price movements, which are separate from the broader market Circuit Breakers.