The Taiwan Stock Exchange Corporation (TWSE; ) is a financial institution, located in Taipei 101, in Taipei, Taiwan. The TWSE was established in 1961 and began operating as a stock exchange on 9 February 1962. It is regulated by the Financial Supervisory Commission. As of 31 December 2013, the Taiwan Stock Exchange had 809 listed companies with a combined market capitalization of NT$ 24,519,622 million. The exchange broadcasts before-hour information from 7:40 to 8:40. Then it has normal trading sessions from 09:00 to 13:45 and fixed price post-market sessions from 14:00 to 15:00 on all days of the week except Saturdays, Sundays and holidays declared by the exchange in advance.

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The Taiwan Capitalization Weighted Stock Index (TAIEX) is the stock market index that measures the aggregate performance of listed stocks on TWSE; it is the most prominent and most frequently quoted index of stock performance of Taiwanese public companies.