China Stock of the Day

Weichai Power <02338.HK>, a major diesel engine maker based in Weifang, Shandong Province, was the Chinese stock most talked about online on October 7, 2026.
Background: With mainland markets closed for the National Day holiday, the Hang Seng Index fell 0.62% to 24,130.5 in Hong Kong on October 7, and AI-related hardware stocks were sold. Against that backdrop, the stock rose 4.68% to 30.86 Hong Kong dollars, the top gainer among Hang Seng Index constituents. The catalyst was a price-target increase from JPMorgan, which kept its Overweight rating and raised its target from 55 to 57 Hong Kong dollars. JPMorgan cited a favorable shipment outlook, resilient margins, accelerating growth in power supply for AI data centers, and progress in commercializing solid oxide fuel cells (SOFC).

CanSino Biologics <06185.HK>, a vaccine maker based in Tianjin, was the Chinese stock most talked about online on October 6, 2026.
Background: With mainland markets closed for the National Day holiday, pharmaceutical and biotech stocks rallied in Hong Kong on October 6, and the company's Hong Kong-listed shares closed up 14.04% at 40.60 Hong Kong dollars. The Hang Seng Biotech Index rose 3.21% to a year-to-date high. One trigger came from the U.S., where vaccine developer Vaxcyte released positive trial data for its pneumococcal vaccine and its shares jumped 30%, lifting expectations for vaccine stocks. In addition, 31 of the 96 breakthrough abstracts to be presented at the European Society for Medical Oncology (ESMO) Congress on October 23-27 reportedly involve drugs from Chinese companies, boosting confidence in Chinese innovative drugs. The company's Shanghai-listed shares had also hit their daily limit on September 30.

Kingboard Laminates <01888.HK>, a major Hong Kong maker of copper-clad laminates used as the base material for printed circuit boards, was the Chinese stock most talked about online on October 5, 2026.
Background: With mainland markets closed for the National Day holiday, printed circuit board (PCB) stocks rose across the board in Hong Kong on October 5, and the stock closed up 11.94% at 55.30 Hong Kong dollars. Group company Kingboard Holdings also gained 8.36%. U.S. nonfarm payrolls rose by only 29,000 in September, far below expectations, dampening expectations of an October rate hike and lifting U.S. tech stocks; following that move, buying concentrated in semiconductor and PCB stocks with strong AI-related demand. The company has issued seven price-increase notices this year, and price hikes are spreading from raw materials to copper-clad laminates and PCBs, with Taiwan's Nan Ya Plastics raising prices by 20% from September. Brokerages noted that AI-related PCB companies have strong orders and are running at full capacity.

Seres <09927.HK>, a Chongqing-based automaker that builds electric vehicles under the AITO brand in partnership with Huawei, was the Chinese stock most talked about online on October 2, 2026.
Background: On October 2, the first Hong Kong trading day after the National Day holiday, the stock rose more than 16% at one point and closed up 6.44% at 37.34 Hong Kong dollars. With mainland markets closed and no southbound funds flowing in, the Hang Seng Index fell 2.60% to 23,972.29, its biggest drop since March 23, making the stock's gain stand out. The catalyst was a new five-year strategic cooperation agreement signed by the company and Huawei on September 30, which dispelled market speculation that the partnership might be dissolved. Under the new agreement, the AITO brand will be run exclusively under the company's leadership, with the company handling product definition, design, sales channels, and service, while Huawei provides technical support.