People attend the initial public offering (IPO) launch of Pony.AI
People attend the initial public offering (IPO) launch of Pony.AI and WeRide at the Hong Kong Stock Exchange.Shares in Chinese self-driving start-ups Pony.AI and WeRide falls on their first listing day in Hong Kong, as experts warns China has not fully ready to deploy a mass rollout of robotaxis due to regulatory changes ISAAC LAWRENCE/Getty Images

Hong Kong Exchanges and Clearing added 10 companies to its Tech 100 Index and dropped 14 in a quarterly reshuffle announced Friday, the exchange's biggest overhaul yet of the AI-focused benchmark. scmp

The additions include autonomous-driving firms Pony AI and WeRide, AI drug-discovery specialist Insilico Medicine, printed-circuit-board maker Victory Giant Technology, enterprise AI company Beijing Haizhi Technology and AI data-intelligence provider Mininglamp Technology. The list is rounded out by Shenzhen Xunce Technology, robotics firm OneRobotics, digital-twin specialist Beijing 51World Digital Twin Technology and chipmaker Montage Technology. scmpscmp

Fourteen constituents are being removed, including Alibaba Health Information Technology, Ganfeng Lithium Group, JD Health International, Bilibili and NetEase Cloud Music. The changes take effect September 14. scmp

The reshuffle follows an overhaul of the index's methodology that HKEX announced on August 18, refining how the benchmark selects constituents and widening its exposure to what the exchange called "emerging technology trends, including opportunities across the artificial intelligence (AI) value chain." That update introduced a lower cap on any single stock's weighting and a new industry-level cap, and it takes effect the same day as the constituent swap, after markets close on September 11. The Standard

The Tech 100, HKEX's flagship technology gauge, launched in December 2025 with 100 Hong Kong-listed constituents drawn from AI, biotech, electric vehicles, information technology, internet and robotics. It has undergone quarterly rebalancings since, with the last one in June bringing in seven companies including Hesai Group and Beijing Geekplus Technology.

Friday's changes replace nearly a quarter of the index's roster in one sitting, the largest single-review turnover since the benchmark's launch. HKEX has not disclosed the new weighting each addition will carry once the rebalancing takes effect next month.