Visitors view Hyundai Motor's booth featuring its Atlas humanoid robot and other cutting-edge motility robots at a transportation technology exhibition at the Coex convenhion center in Seoul, June 24. Yonhap

Hyundai Motor’s stock has surrendered much of this year's robotics-driven gains, as the carmaker's steeply falling vehicle sales shift investor focus back to the firm's core business.

The carmaker earned a spotlight from investors earlier this year on expectations that its robotics business — centered on humanoid robot development and physical artificial intelligence (AI) technologies — would become a new growth engine.

However, Hyundai Motor's shares have retreated sharply, erasing much of the premium that investors had attached to the company's long-term technology ambitions.

Market analysts and industry officials argue that the firm will be able to regain confidence from investors only after displaying a clear vision that its core automotive business can recover from the weakening sales.