# Korean robot makers surge as Nvidia expands physical AI ties *Rainbow Robotics and Doosan Robotics gained up to 14% on Oct. 28 following reports of executive visits, despite no formal filings confirming manufacturing due diligence.* **Published:** October 28, 2026 **By:** So-yeon Jung **Section:** Robotics & Automation — South Korea **Format:** Why It Matters **Confidence:** medium **Source:** https://eastasiabrief.com/robotics/korean-robot-makers-surge-nvidia-expands-physical-ai-ties-976 **Publisher:** East Asia Brief (https://eastasiabrief.com/) --- ## What to know - Rainbow Robotics jumped 14.22% on Oct. 28 following reports of an executive visit - Nvidia executive Madison Huang attends Nvidia AI Day Seoul on Nov. 9-10 - Regulators have logged no corporate filings confirming hardware due diligence ![Engineers work alongside robotic arms and inspect circuit boards on an automated assembly line inside a robotics facility. (AI-generated image)](https://eastasiabrief.com/media/2026-10-28-75c73da1bd1d.webp) *Engineers work alongside robotic arms and inspect circuit boards on an automated assembly line inside a robotics facility. (AI-generated image)* South Korean robotics manufacturers rallied sharply on Oct. 28, 2026, after reports confirmed Nvidia senior director Madison Huang will visit Seoul next month for the chipmaker's physical AI conference. Rainbow Robotics jumped 14.22% to close at 401,500 won ($290) in morning trading. Robotis climbed 9.76% and Doosan Robotics rose 7.07%, lifting the market capitalization of the domestic robotics basket by several hundred billion won. The share gains followed news that Huang, who oversees product marketing for Omniverse and robotics at Nvidia, will arrive for Nvidia AI Day Seoul. The conference convenes roughly 2,000 engineers and corporate partners at COEX on Nov. 9. The upcoming visit marks Huang's fourth trip to South Korea in 2026. Her frequent visits underscore Nvidia's effort to integrate its physical AI models with East Asian precision machinery, factory automation hardware and component supply chains. Physical AI refers to models that allow autonomous systems to perceive, reason and act inside real-world environments. Nvidia uses its Omniverse simulation platform and Isaac robotics libraries to train foundation models before deploying code onto physical machines. South Korean industrial groups provide the precision mechanical platforms that physical AI software requires. Domestic manufacturers specialize in robotic arms, autonomous mobile robots and high-precision speed reducers that convert motor rotation into controlled mechanical torque. Huang previously traveled to Seoul on April 28, delivering a lecture on physical AI at Seoul National University. She met executives at Doosan Robotics on April 29 to discuss software architectures for agentic robot operating systems. Doosan Robotics, which holds an estimated 8% of the global collaborative robot arm market, is testing Nvidia software environments. The company aims to accelerate autonomous trajectory planning and multi-axis kinematics across factory workstations. Huang returned to South Korea in June alongside Nvidia chief executive Jensen Huang for bilateral industry meetings. That visit helped lay the technical groundwork for expanding artificial intelligence infrastructure across domestic industrial conglomerates. On Aug. 18, Huang visited the LG Electronics research and development campus in Yangjae, southern Seoul. She inspected LG Electronics' robot data factory, where robotic fleets generate synthetic training data to instruct neural networks. LG Group signed a comprehensive agreement with Nvidia in August covering robotics, AI factories and autonomous mobility. The partnership targets humanoid robot deployment, combining Nvidia compute modules with LG Electronics' automated assembly and component engineering. Investor enthusiasm on Oct. 28 extended across the broader hardware supply chain to precision component suppliers. Actuators, sensor modules and strain wave gear reducers constitute over 60% of total manufacturing costs in articulated robotic joints. Robotis manufactures smart actuators and cycloidal reduction gears used in service robots and mobile platforms. The company derives more than 40% of its operating revenue from modular actuators exported to global industrial automation customers. Rainbow Robotics produces collaborative arms, quadruped robots and bipedal mechanical assemblies. The company has attracted strategic investment from Samsung Electronics, which holds a 14.83% stake and an option to acquire controlling rights. Market participants treated Huang's travel schedule as evidence that Nvidia intends to conduct on-site inspections of Korean factories. Speculation centered on prospective contract manufacturing agreements and formal hardware qualification audits for humanoid platforms. The documented facts do not support those assumptions. Neither Nvidia nor domestic robotics suppliers have published regulatory filings confirming on-site factory audits, technical due diligence reviews or equipment procurement contracts. The Financial Supervisory Service and the U.S. Securities and Exchange Commission recorded no disclosures on Oct. 28 regarding commercial alliances. Corporate investor relations desks at Rainbow Robotics and Doosan Robotics did not release formal operational statements. Nvidia has not published any schedule indicating that Huang will conduct private corporate audits while in Seoul. Official conference documentation confirms her attendance at the COEX event but does not list factory inspections or bilateral procurement summits. Nvidia AI Day Seoul features 15 specialized technical tracks on Nov. 9 covering physical AI, agentic frameworks and AI infrastructure. Around 20 domestic corporate partners, including Samsung Electronics, SK hynix, LG Electronics and Naver Cloud, will participate. The second day of the gathering on Nov. 10 focuses on hands-on engineering workshops and startup development tracks. The program showcases agent frameworks running on Nvidia enterprise hardware, with demonstrations centered on software execution rather than physical assembly lines. For Korean robotics manufacturers, commercial adoption depends on demonstrating mechanical tolerances capable of executing Nvidia foundation models. Global developers require actuators with sub-millimeter positional repeatability and durable cycloidal gears that can endure high torque variations during dynamic bipedal locomotion. Nvidia continues to expand software access to Asian robotics teams through the Isaac Sim and Isaac Lab development environments. These simulation tools reduce hardware prototyping expenses by testing reinforcement learning algorithms inside physics-accurate virtual spaces. Contractual agreements between Nvidia and domestic hardware makers remain limited to software validation and joint reference designs. Pure-play component suppliers have yet to secure high-volume supply arrangements for global humanoid fleets. South Korean robot makers face intense competition from specialized Japanese component builders and Chinese robotic system integrators. Japanese manufacturers such as Harmonic Drive Systems and Nabtesco control the majority of global precision gear supply channels. Nvidia AI Day Seoul opens Nov. 9 at COEX, where executive delegations and engineering leads will convene for bilateral technical roundtables. The official agenda concludes with an Inception startup reception on the evening of Nov. 10. ## Impact map | Event | Korea | China | Japan | Global impact | | --- | --- | --- | --- | --- | | Nvidia physical AI visit | Rainbow Robotics and Robotis gain up to 14% on speculative tie-up expectations | Humanoid integrators accelerate domestic gear procurement to counter US platform ties | Harmonic Drive Systems maintains dominant share in precision strain wave reducers | AI server and robotics integration shifts toward joint simulation reference models | ## In this story - **Companies:** Rainbow Robotics, Doosan Robotics, Robotis, LG Electronics, Samsung Electronics, Nvidia - **Tickers:** 277810.KS, 454910.KS, 108490.KS, 066570.KS, 005930.KS, NVDA.O - **Exposed:** Harmonic Drive Systems, Nabtesco - **Impact:** Pricing, Capex, Supply Chain ## Primary sources 1. imaeil.com 2. yna.co.kr 3. newsian.co.kr 4. ebn.co.kr 5. newscj.com --- Cite as: East Asia Brief, "Korean robot makers surge as Nvidia expands physical AI ties," October 28, 2026. https://eastasiabrief.com/robotics/korean-robot-makers-surge-nvidia-expands-physical-ai-ties-976