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Is there a limit on HK stock price volatility

The Hong Kong stock market does not have a 10% trading suspension system. In an exceptionally stable market environment, the trend of Hong Kong's large-cap blue-chip stocks and H shares is more stable relative to A-shares.

However, starting from August 22, 2016, the Hong Kong Stock Exchange has launched a market fluctuation adjustment mechanism (cooling-off period) to prevent extreme price fluctuations caused by major trading errors or other abnormal events and maintain the normal order of the market.

The so-called "cooling-off period" means that if the 81 HSI and HSCEI constituent stocks rise or fall by 10% within 5 minutes, they will enter a 5-minute "cooling-off period". Investors can only trade within the specified price range. After the 5-minute cooling-off period, the market will resume normal trading.

Market Insights
Petroleum
No. Symbol 20D % Chg
Sample Name
Sample Code
 +4.00%
Sample Name
Sample Code
 +3.36%
Sample Name
Sample Code
 +0.45%
4
PETROCHINA
00857
+0.09%
5
SINOPEC CORP
00386
-1.07%
View More
No. Symbol 20D % Chg
Sample Name
Sample Code
 +60.81%
Sample Name
Sample Code
 +36.29%
Sample Name
Sample Code
 +33.73%
4
Loongson Technology Corporation
688047
+31.92%
5
Digital China Group
000034
+19.71%
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