Hong Kong Market Watch: Semiconductor Sector Surges, AI Chip Leaders Lead September Rally

As September begins, Hong Kong's market is undergoing structural adjustments, with the semiconductor sector emerging as a hot topic leading market trends. Against the backdrop of continuously surging artificial intelligence wave, AI chip-related stocks have shown particularly impressive performance, with several leading stocks rising by over 10% in a single day, driving the entire semiconductor sector higher. This article will deeply analyze the logic behind the semiconductor sector's movements, interpret industry development trends, and provide practical strategies for investors.

Semiconductor Sector Movement: AI Chips Lead Market Hotspots

On September 18, 2026, Hong Kong's semiconductor sector strengthened collectively, becoming the most shining star sector of the market that day. According to data, the average gain of semiconductor component stocks in the Hang Seng Tech Index reached 4.7%, far outperforming the overall market. Among them, AI chip leaders performed particularly outstanding, with several companies' stock prices reaching recent highs.

Analysts point out that this semiconductor sector movement is mainly catalyzed by multiple factors: first, the continuous rapid development of the global artificial intelligence industry has led to a surge in demand for high-performance AI chips; second, the latest industry data shows that after adjusting for two consecutive quarters, the global chip market has shown signs of recovery; third, several leading semiconductor companies have released better-than-expected mid-term results, boosting market confidence.

Surging AI Chip Demand: New Engine for Semiconductor Industry

The rapid development of artificial intelligence technology has become the core driving force for the growth of the semiconductor industry. With the popularization of generative AI applications like ChatGPT and the continuous expansion of large language model parameters, demand for high-performance AI chips has shown explosive growth. Market research institutions predict that the global AI chip market size will reach $150 billion in 2026, with a compound annual growth rate exceeding 30%.

In the Hong Kong market, several AI chip-related companies have performed impressively recently. Among them, companies focusing on high-end AI chip design have seen their stock prices rise by more than 30% in the past month, significantly outperforming the market. These companies' products are widely used in data centers, autonomous driving, smart security and other fields, benefiting from the comprehensive penetration of AI applications.

Notably, the competitive landscape in the AI chip field is changing. Competition between traditional chip giants and emerging AI chip companies is becoming increasingly fierce. The Hong Kong market, with its valuation advantages and international platform, is attracting more and more AI chip-related companies to list and raise funds, providing investors with abundant investment targets.

Industry Trend Analysis: Revaluation of Semiconductor Sector Investment Value

As a typical cyclical industry, the investment value of the semiconductor sector is often affected by multiple factors such as industry cycles, technological changes, and policy environments. Currently, the semiconductor industry is at the starting point of a new upward cycle, and its investment value is being revalued.

Industry Cycle Bottoming Out and Recovering

After the deep adjustment from 2022 to 2023, the global semiconductor industry has shown clear signs of recovery in the first half of 2026. According to the latest report from the Semiconductor Industry Association (SEMI), the global semiconductor market size is expected to reach $580 billion in 2026, a year-on-year increase of 8.3%, with chip design, manufacturing, and packaging & testing all showing comprehensive recovery trends.

In the Hong Kong market, companies across the semiconductor industry chain have generally seen improved performance. Several chip design companies' mid-term net profit increased by more than 20% year-on-year, wafer foundries' capacity utilization rates have recovered to over 90%, and packaging & testing companies' order volume has increased by 15% year-on-year. These positive signals indicate that the semiconductor industry cycle has bottomed out and entered a new upward cycle.

Technological Innovation Drives Growth

The long-term growth momentum of the semiconductor industry mainly comes from technological innovation. Currently, emerging technologies such as AI chips, third-generation semiconductors, and Chiplet are becoming new engines for industry development. These technological innovations not only improve chip performance but also reduce manufacturing costs, injecting new vitality into industry growth.

In the Hong Kong market, several companies have made breakthroughs in the above fields. For example, a Hong Kong-listed AI chip company has successfully developed a 7nm process AI training chip, with 50% performance improvement and 30% power reduction compared to the previous generation; another company focusing on third-generation semiconductors, its silicon carbide (SiC) power devices are widely used in new energy vehicles, with steadily increasing market share.

Policy Support and Industry Chain Restructuring

The global semiconductor industry chain restructuring is accelerating, and governments are introducing policies to support the development of local semiconductor industries. The US CHIPS and Science Act, the European Chips Act, and China's "14th Five-Year Plan" for integrated circuit industry development all provide policy support for the semiconductor industry.

In this context, the Hong Kong market, with its unique advantages, is becoming an important platform for semiconductor companies to raise funds. On one hand, the Hong Kong market has a high degree of internationalization and a broad investor base; on the other hand, the Hong Kong market is relatively friendly to the valuation of technology companies, which is conducive to semiconductor companies obtaining reasonable valuation levels.

Investment Strategy: Grasping Structural Opportunities in the Semiconductor Sector

Facing the volatile market of the semiconductor sector, investors need to formulate reasonable investment strategies, grasp structural opportunities, while controlling risks. The following provides professional advice from three aspects: industry allocation, stock selection, and risk control.

Industry Allocation: Focus on AI Chips and Third-Generation Semiconductors

Within the semiconductor industry, different sub-sectors have significant differences in development stages and investment value. Investors should focus on the two high-growth areas of AI chips and third-generation semiconductors.

In the AI chip field, attention should be paid to companies with core technical advantages and market competitiveness. These companies usually have independently developed chip architectures and advanced process technologies, able to provide customers with high-performance, low-power AI chip products. In the Hong Kong market, several AI chip leaders have formed differentiated competitive advantages, with continuously increasing market share.

In the third-generation semiconductor field, attention should be paid to companies related to wide bandgap semiconductor materials such as silicon carbide (SiC) and gallium nitride (GaN). These companies' products are widely used in new energy vehicles, photovoltaic power generation, 5G communication and other fields, benefiting from the development of new energy and digital economy. In the Hong Kong market, several third-generation semiconductor companies have achieved mass production, with product performance reaching international advanced levels.

Stock Selection: Focus on Technical Strength and Performance Growth

In stock selection, investors should focus on semiconductor companies with the following characteristics:

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• Strong Technical Strength: Companies have core patented technologies and independent intellectual property rights, high R&D investment ratios, and strong technical teams.
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• Stable Performance Growth: Companies' revenue and profits continue to grow, with gross profit margin and net profit margin maintained at relatively high levels in the industry.
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• Leading Market Position: Companies have high market share in their sub-sectors, strong brand influence, and high-quality customer resources.
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• Reasonable Valuation: Companies' valuation levels match their growth potential, with sufficient safety margins.
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In the Hong Kong market, several leading semiconductor companies have the above characteristics and deserve investors' attention. For example, an AI chip design company has invested more than 30% of its revenue in R&D in the past three years, with a gross profit margin maintained at over 60%, and its market share ranks among the top three globally; a third-generation semiconductor company has a three-year revenue compound growth rate of over 50%, with a gross profit margin maintained at over 45%, and its valuation level is relatively reasonable.

Risk Control: Focus on Industry Cycles and Geopolitics

Although the semiconductor sector has broad prospects, investors still need to pay attention to the following risk factors:

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• Industry Cycle Fluctuations: The semiconductor industry has obvious cyclical characteristics. Investors need to pay attention to industry cycle changes and avoid chasing highs at industry peaks.
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• Technology Iteration Risks: Semiconductor technology updates and iterations are fast. If companies cannot keep up with technology trends, they may face the risk of being eliminated.
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• Geopolitical Risks: The global semiconductor industry chain restructuring is accelerating, and geopolitical factors may affect companies' supply chains and market expansion.
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• Valuation Fluctuation Risks: The semiconductor sector's valuation fluctuates greatly. Investors need to rationally view short-term market fluctuations and avoid chasing gains and selling at losses.
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To control risks, investors can adopt the following strategies: first, diversify investments to avoid excessive concentration; second, build positions in batches to reduce purchase costs; third, set stop-loss levels to control the maximum loss per investment; fourth, regularly track industry dynamics and adjust investment strategies in a timely manner.

Outlook: Semiconductor Sector Still Has Room for Growth

Looking ahead, the semiconductor sector still has significant room for growth. In the long term, the development of emerging applications such as artificial intelligence, Internet of Things, 5G, and new energy vehicles will continue to drive semiconductor demand growth; in the short term, factors such as industry cycle bottoming out, leading companies' better-than-expected performance, and accelerated technological innovation will jointly drive the sector's rise.

In the Hong Kong market, the semiconductor sector has a high degree of internationalization and is more likely to attract global capital attention. With the continuous inflow of southbound funds into the Hong Kong market and the accelerating trend of global semiconductor industry shifting to Asia, the Hong Kong semiconductor sector is expected to receive more capital favor, and its valuation level is expected to further improve.

In summary, as an important investment target in the Hong Kong market, the semiconductor sector is expected to usher in a new round of rally under the dual drive of the artificial intelligence wave and industry cycle recovery. Investors should grasp structural opportunities, focus on leading companies in the AI chip and third-generation semiconductor fields, while doing a good job in risk control to achieve long-term stable investment returns.