What is Trading Halt? Definition, Reasons, and Impact on Stock Investors

YOGYAKARTA - Very sharp stock price movements, both up and down, sometimes create uncertain situations in the capital market. In this condition, the Indonesia Stock Exchange (IDX) has a special mechanism to maintain stability, one of which is through trading halt or temporary trading suspension.

Recently, the Composite Stock Price Index (JCI) has fallen sharply in a short time. This prompted the IDX to impose or trading halt to cool the situation. So, what is trading halt and why does it need to be imposed? Here is the discussion.

As reported by Revolut, a trading halt is a temporary suspension of all stock trading activities, both for specific stocks and the market as a whole. During this period, investors cannot make buy or sell transactions on affected stocks. This suspension usually lasts a short time, about 30 minutes, but can be extended according to market conditions.

On the Indonesia Stock Exchange, trading halt is applied when the JCI touches a certain threshold of decline that has been set in the exchange regulations. For example, this month, the sharp decline in the JCI triggered trading suspension in the II session on Wednesday, January 28 and the I session on Thursday, January 29. This step was taken to give market participants time to calm down and digest information.

Globally, similar practices are also carried out in many world stock exchanges. For example, the United States Securities and Exchange Commission (SEC) can even suspend trading for up to 10 days if deemed necessary for the public interest and investor protection.

The reason for the implementation of trading halt is not only limited to a sharp decline in the index or extreme volatility that could potentially harm investors. The following are some other factors for the implementation of trading halt:

Trading halts can be applied when there is important information that has the potential to significantly affect stock prices. Examples are financial reports, major management changes, or merger and acquisition announcements. Temporary suspension gives all investors the opportunity to receive the same information before resuming trading.

Corporate actions such as right issues, stock splits, share buybacks, or delisting can also trigger trading halts. The exchange needs to ensure that all administrative processes and information related to the action are clear and transparent. Thus, trading after reopening takes place more orderly and fair.

If there is an alleged violation of rules, market manipulation, or issuer compliance issues with regulations, the exchange can stop trading the related shares. This step is taken to protect investors from the risk of uncertain information. Trading halt gives time for authorities to clarify or conduct further inspections.

Trading halt can also be applied in certain situations, such as trading system disruptions, technical problems, or emergency conditions that affect exchange operations. This suspension is preventive so that transactions do not run in abnormal conditions. After the system is stable again, trading will be reopened.

After the trading halt ends, trading will resume as usual. However, the stock price when the market opens again can be very different compared to before the suspension. This is why investors need to understand that trading halts do not guarantee that prices will return to previous levels.

The main purpose of the trading halt is none other than to maintain market stability and fairness. The temporary suspension gives room for information to be spread evenly and investment decisions are not made emotionally. That way, the risk of losses due to mass panic can be suppressed.

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