1, Hang Seng Index has four sub-indexes, namely Hang Seng Financial Sub-index, Hang Seng Public Utilities Sub-index, Hang Seng Real Estate Sub-index and Hang Seng Industrial and Commercial Sub-index;
2. At present, the constituent stock that has the greatest influence on the Hang Seng Index is HSBC Holdings, and the current calculation method of the Hang Seng Index is full circulation adjustment. Full circulation means recognizing the unique market segmentation of "non-tradable shares" and "tradable shares" in China stock market, respecting historical causes, solving the inequality between "non-tradable shares" and "tradable shares" fairly and reasonably, and solving the circulation nature of "non-tradable shares", so as to realize the same shares and the same rights in all stock markets in China.
3. The contract months of Hang Seng Index are the current month, the following month and the following two months (quarterly months refer to March, June, September and1February);
4. The trading hours of Hang Seng Index are 09: 15- 12:00 (morning)13: 00-16:15 (noon)17: 00.
5. Hang Seng Index still has the last trading day, so investors need to pay special attention;
6. The final settlement price of the Hang Seng Index option contract is determined by the clearing company, and the settlement price is lowered to the nearest integer index point based on the average value of the index points quoted by Hang Seng Index every five minutes compiled, calculated and distributed by Hang Seng Index Services Limited. In some cases, the chief executive officer of the exchange has the right to determine the settlement price of stock index option contract transactions according to laws and regulations;
7. If any index component of Hang Seng Index is suspended for one month in a row, it will be removed from the index. Under very special circumstances, for example, constituent stocks are considered to be very likely to resume trading in a short time, so they may remain in the index.