What are ‘circuit breakers’ and how they differ across Asian markets


The Shanghai stock trade in China.

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From Wall Road to Asia, the modern offer-off in world-wide stock marketplaces has induced investing halts in various inventory exchanges — an prevalence that could become ever more typical as traders anxiety the impression of the coronavirus outbreak.

In the U.S., trading was temporarily stopped twice this week immediately after the S&P 500 Index fell 7% — triggering the initial threshold for a “circuit breaker,” aimed at preventing markets from wild swings.

In Asia, circuit breakers had been also brought on in many exchanges together with India, Japan, South Korea, Indonesia, Thailand and the Philippines this week.

Circuit breakers are actions carried out by exchanges when they contemplate price movements to be overly volatile. They can acquire the variety of a buying and selling suspension or limiting acquiring and offering of securities within a certain rate vary. 

Jurisdictions and stock exchanges have their individual regulations for what circuit breakers entail, when do they kick in, and for how very long they are in put.

Listed here are what circuit breakers at some of Asia’s main stock exchanges are like.

Better China

Equally the Shanghai and Shenzhen inventory exchanges will suspend trading for 15 minutes when the CSI 300 Index rises or falls by 5% or far more from its preceding shut for the 1st time.

If the index rises or falls by 7% or a lot more from the preceding near, buying and selling will be halted for the day.

Products that are topic to circuit breakers involve stocks, mutual cash and sure bonds.

In excess of at the Hong Kong stock trade, the circuit breaker at the moment applies only to the constituent shares of the Dangle Seng Index and the Cling Seng China Company Index.

In Hong Kong, the circuit breaker is centered on a “reference selling price” — or the past traded cost 5 minutes back. A cooling-off time period is triggered if the selling price of a stock goes previously mentioned or below 10% from the reference selling price. Throughout the cooling-off period of time, which lasts for 5 minutes, trading is allowed only in just a preset selling price band of 10% higher than or below the reference selling price.

Setting up from May perhaps, the Hong Kong stock exchange will expand its circuit breaker to deal with one more 500 or so stocks, and the reference rate that will set off a cooling time period will also be tiered in accordance to market capitalization.


The Japan Exchange Team, the enterprise that manages the country’s key exchanges, apply trading halts to all futures and selections contracts, as properly as by-product items relating to futures and choices.

Every single solution has its personal “cost limit variety” that will trip the circuit breakers, some of which will be revised each handful of months using a formulation that can take into account earlier price trends.

Trading will be suspended for 10 minutes when that restrict range is breached.

South Korea

In South Korean marketplaces, investing of all outlined securities (excluding personal debt securities) will be suspended for 20 minutes if the respective benchmark index — Kospi or Kosdaq — falls by additional than 10% from the prior day’s closing value.

The triggering of circuit breakers is limited to after per day.


Circuit breakers in India are brought on when the Nifty 50 or Sensex breaches a pre-decided restrict. That restrict is 10%, 15% and 20% previously mentioned or underneath the indexes’ respective past working day close.

Dependent on which limit is breached, a market place-vast buying and selling halt will last from 15 minutes to 1 hour 45 minutes, or even near for the working day.


The Singapore Trade applies circuit breakers to component stocks of the Straits Situations Index, MSCI Singapore Index and other goods — such as stocks and trade-traded fund — that satisfy specific standards.

The circuit breaker in Singapore is activated when a potential buying and selling value falls outside the house the “price band,” outlined as 10% higher than or beneath its value within just a 5-minute period. That value is termed the “reference selling price.” 

When the investing curbs are in spot, a 5-minute cooling-off period will take location, wherever investing can only be performed in 10% higher than or under that reference cost.   


Indonesia revised regulations on its circuit breaker this 7 days. Beneath the new procedures, buying and selling will halt for 30 minutes if the key stock index — the Jakarta Composite Index — falls by 5% or more from the previous close.

Right before the most recent alter, the index had to fall by 10% or far more prior to the circuit breaker kicks in.


A 30-minute investing halt usually takes location on all outlined securities when the benchmark Established Index falls by 10% from the earlier day’s near. If the Set Index falls by 20% from the former near, investing will be halted for an hour.


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