Movement Alert｜CIG Falls 10.73% in Regular Trading, US Proposes Ban on Chinese Optical Module Imports Triggering Sector Selloff

Market Focus08-05

On August 5, CIG (06166) fell 10.73% in regular trading, trading at HK$79.8/share, with turnover of HK$140 million.

On the news front, the US Federal Communications Commission is reportedly drafting a ban on importing Chinese-manufactured new data center optical modules, citing alleged security risks. CIG's core business involves the R&D, production, and sales of high-speed optical modules, making the proposed ban a direct headwind for the company's business outlook.

Market participants noted that Chinese manufacturers hold over 70% market share in the 800G/1.6T segment, suggesting a strict ban remains unlikely, though short-term sentiment impact is significant. Additionally, CIG had surged nearly 20% on August 4, and profit-taking pressure further amplified the intraday decline. Within the Communications Equipment sector, ZJ INNOLIGHT fell 8.67% and YOFC declined 2.37%, reflecting broad sector weakness. Notable exchange data showed a major shareholder increased holdings of 2.16 million shares at approximately HK$63.99 per share on July 30, signaling longer-term confidence.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)

Disclaimer: Investing carries risk. This is not financial advice. The above content should not be regarded as an offer, recommendation, or solicitation on acquiring or disposing of any financial products, any associated discussions, comments, or posts by author or other users should not be considered as such either. It is solely for general information purpose only, which does not consider your own investment objectives, financial situations or needs. TTM assumes no responsibility or warranty for the accuracy and completeness of the information, investors should do their own research and may seek professional advice before investing.

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