Horizon Robotics-W (9660.HK) fell more than 8% in Hong Kong trading to HK$4.620, tracking a broader pullback in AI and technology stocks. The Hang Seng Tech Index declined about 2% by midday, while the Hang Seng Index dropped nearly 200 points.

Volkswagen Group China announced its full-scenario advanced driver-assistance system will debut in the third quarter of 2026 across seven NEV models from three JV brands, built on Horizon Robotics' AI foundation model via a white-box licensing arrangement. The stock had touched a recommended buy level of HK$5.05 with a stop-loss at HK$4.63; current pricing sits squarely in that stop-loss zone.