Article 19 of the TAIFEX Trading Rules for Single Stock Futures Contracts and Article 19-1 of the TAIFEX Trading Rules for Equity Option Contracts
The final settlement price for a single stock futures or equity option contract shall be determined by the arithmetic mean of the prices of the underlying security on the securities market during the last 60 minutes of trading before market close on the final settlement day. If the final settlement day of a single stock futures or equity option contract falls on a day on which the underlying security is suspended from trading, the day for determining the final settlement price shall instead be the business day before the first day on which the trading is suspended.
If the underlying security is common stocks listed on Taiwan Stock Exchange or Taipei Exchange, the calculation of the above mentioned mean price of the underlying security is the simple arithmetic mean of prices for the specific component stock of each disclosed Taiwan Stock Exchange or Taipei Exchange Capitalization Weighted Stock Index during the trading period from 12:30 p.m. to 1:25 p.m. and the last index. The aforesaid simple arithmetic mean prices shall be rounded to the second decimal place.
The final settlement price of a single stock futures or equity option contract whose underlying security is not a component stock of the Taiwan Stock Exchange or Taipei Exchange Capitalization Weighted Stock Index on the final settlement day shall be the simple arithmetic mean of the last trading prices before each disclosure of the index within the last 60 minutes of trading. If there is no trading price for the underlying security within the trading session, the final settlement price shall be the opening reference price of the underlying security.
If the Taiwan Stock Exchange or Taipei Exchange postpones market close or matching, TAIFEX may extend the aforementioned 60-minute sampling time.
In case a suspension of trading is announced by Taiwan Stock Exchange or Taipei Exchange according to respective rules(Measures for Handling Malfunctions and Telecommunications Disruptions in Trading Systems or Trading Information Transmission Systems) and it is unable to resume normal operation prior to the last 60 minutes of daily trading session, the final settlement price is calculated on the basis of prices for the specific component stock of each disclosed underlying Index during the last 60 minutes prior to the last disclosed underlying index; if the duration of normal trading session is less than 60 minutes, the final settlement price is calculated on the basis of prices for the specific component stock of each disclosed underlying Index during the total normal trading session. With respect to a single stock futures or equity option contract whose underlying security is not a component stock of the Taiwan Stock Exchange or Taipei Exchange Capitalization Weighted Stock Index on the final settlement day, the final settlement price is calculated on the basis of the last trading prices before each disclosed Index; if there is no trading price for the underlying security within the trading session, the final settlement price shall be the opening reference price of the underlying security. The sampled stock prices shall not outnumber the samples in the preceding paragraph.
If the underlying security is exchange-traded funds(ETFs) listed on Taiwan Stock Exchange or Taipei Exchange, the calculation of the above mentioned mean price of the underlying security is the simple arithmetic mean of the last trading prices before each disclosure of Taiwan Stock Exchange or Taipei Exchange Capitalization Weighted Stock Index during the trading period from 12:30 p.m. to 1:25 p.m. and the last index. If there is no trading price for the underlying security within the trading session, the final settlement price shall be the opening reference price of the underlying security. The aforesaid simple arithmetic mean prices shall be rounded to the second decimal place.
If the Taiwan Stock Exchange or Taipei Exchange postpones market close or matching, TAIFEX may extend the aforementioned 60-minute sampling time.
In case a suspension of trading is announced by Taiwan Stock Exchange or Taipei Exchange according to respective rules(Measures for Handling Malfunctions and Telecommunications Disruptions in Trading Systems or Trading Information Transmission Systems) and it is unable to resume normal operation prior to the last 60 minutes of daily trading session, the final settlement price is calculated on the basis of latest trading prices before each disclosed Index during the last 60 minutes prior to the last disclosed index; if the duration of normal trading session is less than 60 minutes, the final settlement price is calculated on the basis of latest trading prices before each disclosed Index during the total normal trading session; if there is no trading price for the underlying security within the trading session, the final settlement price shall be the opening reference price of the underlying security. The sampled security prices shall not outnumber the samples in the preceding paragraph.
