Regulations Governing Securities Firms Article 19
A securities firm operating the business of proprietary trading of securities, unless it is concurrently operated by a financial institution and subject to other relevant laws or regulations, shall do so in accordance with the following rules:1. The firm shall not hold more than 10 percent of the total issued shares of any domestic company. The total cost of the securities issued by any domestic company held by such securities firm shall not be more than 20 percent of the securities firm's net worth.2. The firm shall not hold more than 5 percent of the total issued shares of any foreign company. The total cost of the securities issued by any foreign company held by the securities firm shall not be more than 20 percent of the securities firm's net worth; however, the total cost of such securities with equity characteristics shall not be more than 10 percent of the securities firm's net worth.3. The total investment cost of a securities firm in holdings of equity securities issued by a single related party may not exceed 5 percent of the firm's net worth. The total investment cost of a securities firm in holdings of equity securities issued by all related parties may not exceed 10 percent of the firm's net worth. However, these restrictions are exempted in the handling of exercise and hedging operations for call (put) warrants, exchange traded notes, and over-the-counter derivative financial product trading business, and in the hedging of beneficial certificates of exchange traded funds and the underlying baskets of stock represented by such beneficial certificates.4. The total investment cost of a securities firm in holdings of straight corporate bonds issued by a single securities firm may not exceed 5 percent of the securities firm's net worth. The total investment cost of a securities firm in holdings of straight corporate bonds issued by all securities firms may not exceed 10 percent of the securities firm's net worth.The term "related party" in these Regulations is defined as determined in accordance with the Regulations Governing the Preparation of Financial Reports by Securities Firms.A securities firm, when holding shares in any single company, may do so either by the method of a proprietary trading position or by the equity investment method in paragraph 1 of the preceding article, but not by both methods.If the aggregate of the securities acquired by a securities firm for underwriting purposes, counted in combination with those acquired under the preceding paragraph, exceeds the limit prescribed by the FSC, the portion in excess shall be sold within 1 year after its acquisition in accordance with Article 75 of the Act.
中文原文 證券商管理規則第19條
證券商除由金融機構兼營者依有關法令規定外，其經營自行買賣有價證券業務者，應依下列規定辦理：
一、持有任一本國公司股份之總額不得超過該公司已發行股份總額之百分之十；持有任一本國公司所發行有價證券之成本總額，並不得超過該證券商淨值之百分之二十。
二、持有任一外國公司股份之總額，不得超過該公司已發行股份總額之百分之五；持有任一外國公司所發行有價證券之成本總額，不得超過該證券商淨值之百分之二十，但涉及股權性質有價證券之成本總額，不得超過該證券商淨值之百分之十。
三、持有單一關係人所發行股權性質有價證券之投資成本總額，不得超過該證券商淨值之百分之五；持有所有關係人所發行股權性質有價證券之投資成本總額，不得超過該證券商淨值之百分之十。
但辦理認購（售）權證、指數投資證券及於營業處所經營衍生性金融商品交易業務之履約與避險操作，以及指數股票型證券投資信託基金之受益憑證及該受益憑證所表彰股票組合之避險者，不在此限。
四、持有單一證券商所發行普通公司債之投資成本總額，不得超過該證券商淨值之百分之五；持有所有證券商所發行普通公司債之投資成本總額，不得超過該證券商淨值之百分之十。
本規則所稱關係人定義，應依證券商財務報告編製準則規定認定之。
證券商僅得就自營部位或前條第一項之轉投資方式擇一持有單一公司股份。
證券商因承銷取得有價證券，與依前項規定取得之有價證券併計，超過本會規定之限額者，其超過部分，應於取得後一年內，依本法第七十五條之規定出售。
一、持有任一本國公司股份之總額不得超過該公司已發行股份總額之百分之十；持有任一本國公司所發行有價證券之成本總額，並不得超過該證券商淨值之百分之二十。
二、持有任一外國公司股份之總額，不得超過該公司已發行股份總額之百分之五；持有任一外國公司所發行有價證券之成本總額，不得超過該證券商淨值之百分之二十，但涉及股權性質有價證券之成本總額，不得超過該證券商淨值之百分之十。
三、持有單一關係人所發行股權性質有價證券之投資成本總額，不得超過該證券商淨值之百分之五；持有所有關係人所發行股權性質有價證券之投資成本總額，不得超過該證券商淨值之百分之十。
但辦理認購（售）權證、指數投資證券及於營業處所經營衍生性金融商品交易業務之履約與避險操作，以及指數股票型證券投資信託基金之受益憑證及該受益憑證所表彰股票組合之避險者，不在此限。
四、持有單一證券商所發行普通公司債之投資成本總額，不得超過該證券商淨值之百分之五；持有所有證券商所發行普通公司債之投資成本總額，不得超過該證券商淨值之百分之十。
本規則所稱關係人定義，應依證券商財務報告編製準則規定認定之。
證券商僅得就自營部位或前條第一項之轉投資方式擇一持有單一公司股份。
證券商因承銷取得有價證券，與依前項規定取得之有價證券併計，超過本會規定之限額者，其超過部分，應於取得後一年內，依本法第七十五條之規定出售。