Taiwan Stock Exchange Corporation (TSEC) is the principal securities market in Taiwan, the Republic of China (ROC), and it operates as a designated offshore securities market.

The main index is the TSEC Taiwan 50 Index.

The TSEC Taiwan 50 Index has been the first tradable index for the Taiwan market, created under the collaboration of Taiwan Stock Exchange Corporation (TSEC) and FTSE International Limited (FTSE). It covers the top 50 companies by total market capitalization.

FTSE’s free float methodology is applied throughout the index to ensure the weights within the index reflect the market capitalization available for investment.