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Relevant Laws

Title：Operating Rules for Securities Firms Handling Margin Purchases and Short Sales of Securities (2023.08.17)
Article 16     The equity ownership of TWSE or TPEx listed shares is deemed excessively concentrated as in Article 8, paragraph 1, subparagraph 3, item 2 under any of the following circumstances:
  1. The number of shareholders holding between 1,000 and 50,000 shares is less than 500.
  2. The number of registered shares held by all the directors, supervisors, officers, and shareholders with more than 10% shares accounts for at least 75% of the company's TWSE or TPEx listed shares when the total number of issued shares of the company is not more than 50 million, at least 80% of the company's TWSE or TPEx listed shares when the total number of issued shares of the company is over 50 million and not more than 500 million, and 85% of the company's TWSE or TPEx listed shares when the total number of issued shares of the company is over 500 million.
  3. The number of registered shareholders of TPEx listed shares is less than 1,000.
  4. Other circumstances where the equity ownership may be deemed excessively concentrated.
Article 21     The TWSE or TPEx will conduct another review on the last business day of each month in respect of securities where upon initial review the price fluctuation is found to be excessively volatile or the trade volume excessively irregular as in this section.
    Where it is found upon initial review that the equity or beneficial ownership of securities is excessively concentrated as mentioned in this section, the TWSE or TPEx will not conduct another review until after the TWSE or TPEx listed company, foreign issuer or SITE furnishes information showing that the equity or beneficial ownership of securities is no longer excessively concentrated.