A weekly analysis of institutional research activity highlights the sectors and companies attracting the most attention from investors.
**Hot Sectors for Institutional Research** For the week of March 23-27, 2026, the electronics, pharmaceuticals and biotechnology, and machinery equipment sectors received the highest level of institutional attention, ranked by the total number of research visits. Within these, the pharmaceuticals and biotechnology, computer, and machinery equipment sectors had the highest number of unique institutions conducting research over the past five days. Compared to the previous week, pharmaceuticals and biotechnology emerged as a new focal point for institutions, with the sector benefiting from policy upgrades and the overseas expansion of innovative drugs.
Over the past 30 days, from February 25 to March 27, 2026, the electronics, machinery equipment, pharmaceuticals and biotechnology, and basic chemicals sectors were the most researched. The electronics, pharmaceuticals and biotechnology, and machinery equipment sectors attracted the highest number of researching institutions over this one-month period.
**Most Researched Companies** Ranked by the number of research visits over the past five days, the companies with the most frequent research activity and more than 10 analyst ratings were Willfar Information Technology Co.,Ltd., Ping An Insurance (Group) Company Of China, Ltd., Espressif Systems (Shanghai) Co.,Ltd., China Construction Bank Corporation, and China Oilfield Services Limited.
Ranked by the number of unique institutions conducting research over the past five days, the companies with a high number of researching institutions and more than 10 analyst ratings included Sanhua Intelligent Controls, Yuanjie Technology, Yuntianhua, and Espressif Systems (Shanghai) Co.,Ltd., among others.
Over the past 30 days, ranked by the number of research visits, companies with frequent activity and over 10 analyst ratings included Sunlord Electronics, ZORIFI, and Huarui Precision.
Ranked by the number of unique institutions over the past 30 days, companies with high participation and more than 10 analyst ratings included Sanhua Intelligent Controls, BeiGene, and Sunlord Electronics.
**Key Company Research Highlights** **Sanhua Intelligent Controls** During the week, research on Sanhua Intelligent Controls focused on its 2025 financial performance, new business expansion, and global layout. The company reported robust growth for 2025, with annual revenue reaching 31.012 billion yuan, a year-on-year increase of 10.97%. Net profit attributable to shareholders was 4.063 billion yuan, up 31.10% year-on-year. Revenue from its automotive components business amounted to 12.427 billion yuan. Capital expenditure is focused on global capacity expansion, with existing bases in Mexico, Vietnam, and Poland, and plans to advance a new base in Thailand. The company is also increasing investment in overseas facilities. In new business development, the company is advancing research and development of electromechanical actuators for bionic robots and accelerating its digital and intelligent transformation, including the application of AI technologies.
**Yuanjie Technology** Research on Yuanjie Technology centered on its 2025 performance and product portfolio. The company delivered strong results for 2025, with revenue surging 138.50% year-on-year to 601.4 million yuan. It reported a net profit of 190.9 million yuan, turning a profit from a loss. Revenue from its data center business skyrocketed 719.06% to 393.3 million yuan, accounting for 65.39% of total revenue. The company is further optimizing its product mix, increasing promotion of its 10G EML products. Optical chip products for next-generation 25/50G PON networks have achieved volume delivery and are generating scaled revenue. EML products have become a significant revenue contributor in the telecom market. Driven by growing demand from AI computing, the company's data center business experienced rapid growth, with sales exceeding 50% of total revenue. A key product is the high-power CW laser chip required for silicon photonics solutions.
**Yuntianhua** Research on Yuntianhua focused on its 2025 performance, cost control, market opportunities, and resource layout. The company reported stable operations for 2025, with total operating revenue of 48.415 billion yuan and net profit attributable to shareholders of 5.156 billion yuan. Despite cost pressures from rising sulfur prices, the company maintained a cost advantage through strategic reserves and optimized procurement. It is also advancing a phosphogypsum acid production project. Geopolitical conflicts have driven up international fertilizer prices. The company is ensuring supply for the spring planting season while also seeking export opportunities. Regarding phosphate resources, the Zhenxiong phosphate mine is planned with an annual capacity of 15 million tons, with the first phase targeting 5 million tons.
**Risk Advisory** Investors should be aware of risks related to short-term market fluctuations, industry policies, and company operations.
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