I. Formula for Calculating Final Settlement Prices of Domestic Stock Index Contracts

1. Legal Basis

Article 13 of the TAIFEX Trading Rules for Taiwan Stock Exchange Stock Index (TAIEX) Futures, Taiwan Stock Exchange Electronic Sector Index Futures, Taiwan Stock Exchange Finance Sector Index Futures, Mini-TAIEX Futures, FTSE/TWSE Taiwan 50 Index Futures, Taipei Exchange Stock Index Futures and Taiwan Stock Exchange Non-Finance Non-Electronics Sub-Index Futures Contracts; Article 16 of the TAIFEX Trading Rules for Taiwan Stock Exchange Stock Index (TAIEX) Options, Taiwan Stock Exchange Electronic Sector Index Options, Taiwan Stock Exchange Finance Sector Index Options, Taipei Exchange Stock Index Options and Taiwan Stock Exchange Non-Finance Non-Electronics Sub-Index Options Contracts

2. Formula for Calculating Final Settlement Prices

Applicable Contracts: TAIEX, Electronic Sector Index, Finance Sector Index, Taipei Exchange Stock Index and Non-Finance Non-Electronics Sub-Index Futures and Options Contracts, FTSE/TWSE Taiwan 50 Index Futures Contracts , as well as Mini-TAIEX Futures Contracts The final settlement price of each of the above mentioned contracts shall be determined based on the simple arithmetic mean index of the underlying index during the last 30 minutes of trading before market close of the Taiwan Stock Exchange or Taipei Exchange on the final settlement day, consisting of each disclosed underlying index during the trading period from 1:00 p.m. to 1:25 p.m. and the last index.

The aforesaid arithmetic mean index shall be rounded to the nearest minimum price fluctuation as specified by each contract or, where the final settlement price is an exact uneven multiple of one half of the minimum price fluctuation, to the nearest higher minimum price fluctuation. If the Taiwan Stock Exchange or Taipei Exchange postpones market close or matching, TAIFEX may extend the aforementioned 30-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 30 minutes of daily trading session, the final settlement price is calculated on the basis of each disclosed underlying index during the last 30 minutes prior to the last disclosed underlying index; if the duration of normal trading session is less than 30 minutes, the final settlement price is calculated on the basis of disclosed underlying index during the total normal trading session. The sampled underlying index shall not outnumber the samples in the preceding paragraph.

II. Formula for Calculating Final Settlement Prices of Foreign Stock Index Contracts

1. Legal Basis

Article 13 of the Taiwan Futures Exchange Corporation Trading Rules for Tokyo Stock Price Index (TOPIX) Futures Contracts, TAIFEX Nifty 50 Index Futures Contracts, Dow Jones Industrial Average Index Futures contracts and S&P 500 Index Futures Contracts .

2. Formula for Calculating Final Settlement Prices

(1) Tokyo Stock Price Index (TOPIX) Futures Contracts：

    The final settlement price of the Contracts is set at the Special Quotation for the Index as announced and calculated by the TSE on the next TSE business day following the last trading day.

(2) TAIFEX Nifty 50 Index Futures Contracts：

    The final settlement price of the Contracts is set at the closing price for the Index as calculated by IISL on Last Trading Day.

(3) TAIFEX DJIA futures and TAIFEX S&P 500 Index Futures Contracts：

    The final settlement price of TAIFEX Dow Jones Industry Average futures shall be determined based on the Special Opening Quotation of Dow Jones Industry Average index calculated by SPDJI on the last trading day of Dow Jones Industry Average futures.
The final settlement price of TAIFEX S&P 500 Index futures shall be determined based on the Special Opening Quotation of S&P 500 Index calculated by SPDJI on the last trading day of S&P 500 Index futures

III. Formula for Calculating Contract Values of Stock Index Futures Expired Positions

The contract value of each NTD-denominated stock index futures expired position shall be determined by multiplying the Final Settlement Price of the Contract by the value of each index point, with amounts of less than NT$1.00 unconditionally rounded down.