--- title: "Hong Kong Stock Movement: SIGENERGY's stock price plummets 10.47% due to concerns over dilution caused by the issuance of over-allotment rights" type: "News" locale: "en" url: "https://longbridge.com/en/news/286847559.md" description: "SIGENERGY fell 10.47%; Contemporary Amperex Technology Co., Limited (CATL) fell 2.97%, with a transaction volume of HKD 1.031 billion; Huiju Technology fell 3.79%, with a transaction volume of HKD 193 million; Zhaowei Electromechanical rose 1.02%, with a transaction volume of HKD 158 million; Zhongwei New Materials fell 3.14%, with a market value of HKD 37.3 billion" datetime: "2026-05-19T03:12:47.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/286847559.md) - [en](https://longbridge.com/en/news/286847559.md) - [zh-HK](https://longbridge.com/zh-HK/news/286847559.md) --- # Hong Kong Stock Movement: SIGENERGY's stock price plummets 10.47% due to concerns over dilution caused by the issuance of over-allotment rights **Hong Kong Stock Movement** SIGENERGY fell by 10.47%. Based on recent key news: 1. On May 18, SIGENERGY announced the issuance of 2.036 million H shares based on the full exercise of the over-allotment option. This move raised market concerns about the dilution of the company's stock price, leading to a decline in share price. Source: Zhitong Finance. The volatility in the Hong Kong stock market has intensified recently and requires attention. **Stocks with High Trading Volume in the Industry** CATL fell by 2.97%. Based on recent key news: 1. On May 18, CATL signed a strategic cooperation agreement with Tibet Development Investment Group to promote zero-carbon demonstration construction sites and transportation energy transformation, enhancing market confidence. 2. On May 18, CATL signed a cooperation agreement with Nanjing Public Transport Group, focusing on vehicle aftermarket services and urban battery swap networks, driving stock price fluctuations. 3. On May 18, JP Morgan increased its holding ratio in CATL to 7.58%, indicating market confidence in its future growth. Demand in the new energy market is weak, with exports becoming a pillar. HuiJu Technology fell by 3.79%. Based on recent key news: 1. On May 18, a UBS report showed that HuiJu Technology's net profit for the first quarter was 495 million yuan, lower than the market expectation of 800 million to 1 billion yuan, leading to a decline in stock price. UBS believes the short-term market reaction is negative, but maintains confidence in the company's future profit growth. Huatai Securities pointed out that the company's profit growth rate in the first quarter far exceeded the revenue growth rate, mainly due to improved gross margins. With high-priced orders concentrated in the second quarter, profit elasticity is expected to accelerate. Fiber optic prices are rising, and demand from data centers is increasing. Zhaowei Electromechanical rose by 1.02%. Based on recent news: 1. On May 18, Zhaowei Electromechanical focused on the R&D and production of micro drive and drive systems, establishing a collaborative innovation system of "transmission + motor + electronic control," enhancing market competitiveness. This innovation system integrates micro drive systems, micro motor systems, and electronic control systems, forming a full-chain competitive advantage covering core components to intelligent integrated solutions, driving stock price up. Source: Economic Times. 2. On May 17, Suzhou Zhaowei Drive Industrial Park successfully passed system certification and customer site audits, officially achieving independent production and generating product sales revenue, becoming an important production and business layout support point for the group in the East China region, enhancing investor confidence. Source: Economic Times. 3. On May 16, the group is steadily advancing its global layout, with Zhaowei in Thailand under construction, in coordination with Zhaowei in Germany and the United States, further expanding the international market and deepening global layout, enhancing market expectations. Source: Economic Times. Demand for micro drive systems is growing, and the industry outlook is optimistic. **Stocks with High Market Capitalization in the Industry** Zhongwei New Materials fell by 3.14%. Based on recent key news: 1. On May 18, the concept of green development has become a consensus among listed companies, promoting green transformation. Zhongwei New Materials is actively laying out in the wave of greening, increasing its green content, and driving stock price fluctuations. Data from People's Daily; 2. On May 18th, policy empowerment promotes the green upgrade of durable consumer goods, leading to revenue growth in the new energy vehicle industry. Zhongwei New Materials benefits from policy support, and stock price volatility intensifies. Data from People's Daily; 3. On May 18th, the performance of listed companies accelerates improvement, and confidence in the capital market strengthens. Zhongwei New Materials stands out in high-quality development, with significant stock price volatility. Data from People's Daily. 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