China’s equity market staged a broad, if uneven, rally on Thursday as investors piled into niche technology and infrastructure themes before profit-taking in the afternoon pared gains. The Shenzhen Growth Enterprise Market (ChiNext) climbed 1.66% after an intraday spike of more than 3%, while the Shanghai Composite rose 0.64%, the Shenzhen Component gained 1.23% and the STAR Board composite added 1.78%.
Trading activity picked up: turnover across Shanghai and Shenzhen reached roughly RMB 2.39 trillion, about RMB 24.3 billion higher than the prior session, and nearly 4,100 listed stocks finished the day higher. Market breadth and size of the advance underlined a risk-on mood dominated by momentum flows rather than a handful of megacaps.
Sector rotation was the story of the day. MicroLED-related names surged, with a swathe of small-cap optoelectronics companies hitting their daily limit-up thresholds; among them were Longteng Optoelectronics (Longteng Guangdian, 龙腾光电), HC Semitek (Huacan Guangdian, 华灿光电), Jucan Optoelectronics (Jucan Guangdian, 聚灿光电) and Jufei Optoelectronics (Jufei Guangdian, 聚飞光电). Power‑grid equipment stocks also extended a recent run, led by China XD Electric (中国西电), which closed at a record high after striking the limit-up.
Other pockets of strength included computing‑power leasing plays — beneficiaries of the AI hardware cycle — where Meili Cloud (Meili Yun, 美利云) and Tongniu Information (Tongniu Xinxi, 铜牛信息) reached limit-up. CPO‑linked names and quantum‑technology related stocks also drew buying interest, with Kaige Precision Machinery (Kaige Jingji, 凯格精机) jumping nearly 14% to a fresh peak and Shenzhou Information (神州信息) hitting limit-up.
Not all corners of the market participated. Seed‑industry shares suffered a broad pullback, with multiple agriculture technology names down more than 10%, and several oil and gas firms that popped earlier in the session retreated in the afternoon, with a couple approaching their daily downside limits. The pattern — quick, concentrated rallies across speculative themes alongside sudden reversals — speaks to heightened short‑term trading and theme rotation rather than uniformly improving fundamentals.
For global investors watching China, the day underscores two linked dynamics. First, policy and market attention on semiconductors, next‑generation displays and AI infrastructure continues to funnel speculative capital into small and mid‑caps exposed to those narratives. Second, the market’s sensitivity to intraday flows and narrow sector leadership means headline gains can mask fragility: broad participation can coexist with sharp intra‑day reversals, making risk management crucial for foreign and domestic portfolios alike.