中文：

股票举牌是指投资者在购买股票后，持有该股票的份额达到一定的比例，需要按照规定进行公告的行为。这个比例通常为5%，10%或15%等。

投资者在购买股票后，其持有的股票数量达到一定比例时，需要向证监会提交书面报告，告知其已持有该股票的份额。这一行为被称为“举牌”。书面报告必须在规定的期限内提交，否则可能会面临处罚。

举牌的目的通常是为了保护投资者的权益。当投资者持有大量股份时，他们可能对公司的经营决策产生重大影响。为了保障投资者的权益，当投资者持有大量股份时，必须进行公告，使得其他投资者能够了解公司的股权结构。

英文：

Stock lodgement refers to the act of investors purchasing shares and subsequently holding a certain proportion of the shares, which requires public notification in accordance with regulations. The proportion is usually 5%, 10%, or 15%, among others.

When investors purchase shares, when their shareholding reaches a certain proportion, they need to submit a written report to the CSRC to inform them of the shareholding. This is called "lodgement". The written report must be submitted within the prescribed time limit, otherwise they may face penalties.

The purpose of lodgement is usually to protect the rights and interests of investors. When investors hold a large proportion of shares, they can have a significant impact on the company's decision-making. To safeguard the rights and interests of investors, when investors hold a large proportion of shares, they must make public announcements to allow other investors to understand the company's shareholding structure.