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About SET
SET Overview
Circuit Breaker
Together with the introduction of the floor and ceiling trading limits, SET also implemented a circuit breaker system to curb any excessive volatility in the market that may cause investor panic. The circuit breaker functions as follows
After third stage, SET will continue matching orders until market close session and no more halted market.
If the trading time remaining in a session is less than 30 minutes or one hour (as the case may be) after the circuit breaker comes into effect, trading will be halted until the closing time of that session, and trading will then resume in the next session.
The Circuit Breaker will not be applied to
If the trading time remaining in a session is less than 30 minutes or one hour (as the case may be) after the circuit breaker comes into effect, trading will be halted until the closing time of that session, and trading will then resume in the next session.
The Circuit Breaker will not be applied to
- Securities whose underlying asset is not a security listed on SET.
- Securities whose underlying asset is an index not calculated from common stocks listed on SET.