The Hang Seng Index fell 0.04%, down 10 points, to 24,513 points; the Hang Seng Tech Index declined 0.15%.
Morning trading turnover in Hong Kong stocks reached HK$88.7 billion.
mRNA-related shares posted strong gains.
CanSino Biologics Inc. (HKEX: 06185) surged over 16%, as Moderna's mRNA neoantigen therapy is set to debut at the ESMO Congress.
CRO-related shares led the advance, with surging BD and rising wet-lab demand providing clear signals of an upward industry cycle.
Joinn Laboratories (China) Co., Ltd. (HKEX: 06127) rose 11%; GenScript Biotech Corporation (HKEX: 01548) gained 8%; Asymchem Laboratories (Tianjin) Co., Ltd. (HKEX: 06821) added 5%.
Hangzhou Tigermed Consulting Co., Ltd. (HKEX: 03347) climbed over 4% after signing a strategic cooperation agreement with Dian Diagnostics to pursue deep collaboration across multiple fields including AI-driven drug development.
A new home purchase interest subsidy policy has been implemented. Hong Kong-listed property stocks staged a V-shaped intraday reversal, with China Vanke Co., Ltd. (HKEX: 02202) falling over 11% at one point before turning to gain over 2% by midday.
Shandong Gold Mining Co., Ltd. (HKEX: 01787) rebounded over 4% after the company lowered its 2026 production guidance, with institutions noting that earnings are expected to grow strongly as production recovers.
Camsense Technology (HKEX: 06802) made its trading debut and surged over 196% in morning trading. The company is the world's number one provider of spatial perception solutions for intelligent robots.
Jinchuan International Group Resources Limited (HKEX: 02362) resumed trading and rose over 24%, driven by higher copper and cobalt volumes and prices, with first-half net profit surging 7.7 times year-on-year.
DeepZero (HKEX: 02723) gained over 15%, as institutions benchmark it against the Chinese version of Palantir in AI applications.
Mobvista Inc. (HKEX: 01860) rose over 8%, as an AI Infra upgrade is expected to further improve algorithmic efficiency.
CGN Mining Company Limited (HKEX: 01164) climbed over 5%, as long-term contract prices confirm upbeat industrial demand and the uranium supply-demand structure remains tight.
SHEIN-W (HKEX: 00625) fell another 2%+, as fulfillment expense ratios weighed on performance, with Jefferies cutting its target price to HK$23.