Nvidia Corp. (NASDAQ:NVDA) CEO Jensen Huang has repeatedly projected a $50 trillion total addressable market for humanoid robots and physical AI at GTC 2026 and the BG2 Podcast. This growing market spotlights critical hardware bottlenecks for robotics and how investors can look out for picks and shovels in that sector.
What is the Critical Bottleneck for Physical AI?
While graphic processing units (GPUs) serve as the brain of a robot, actuators function as the muscles. A single humanoid robot requires dozens of high-torque actuators to enable mobility, dexterity, and joint movement at scale. Without robust, highly efficient actuation systems, physical AI cannot maneuver through the real world.
As the robotics industry attempts to scale from laboratory prototypes to factory floors, the focus is shifting toward the specialized supply chain required to manufacture these physical components.
Physical AI Stocks In Focus
Moog: Precision Motion Control
Moog Inc. (NYSE:MOG) has decades of experience engineering actuation and precision motion control technologies for the aerospace, defense, and industrial automation sectors.
For modern robotics, Moog manufactures components like fractional horsepower brushless DC motors and slip rings, which are essential for advanced robotic systems.
MP Materials: The Critical Magnetic Inputs
The physical mechanics of an actuator are heavily dependent on raw materials. Humanoid robots rely on high-performance NdFeB (neodymium-iron-boron) permanent magnets.
Because a single robot contains multiple actuators across its hands, joints, and mobility systems, the demand for these magnets multiplies rapidly at scale. MP Materials Corp. (NYSE:MP) operates as a major supplier of the rare earth elements—such as neodymium and praseodymium (NdPr)—required to produce these critical traction motors and magnets.
Symbotic: Commercial Implementation at Scale
While humanoid applications continue to develop, advanced robotic actuators are already functioning at scale in industrial logistics for major retailers like Walmart Inc. (NASDAQ:WMT). Symbotic Inc. (NASDAQ:SYM) builds complex warehouse automation systems across Walmart’s regional distribution network, utilizing autonomous mobile robots that travel at speeds up to 20 miles per hour.
To improve system throughput, Symbotic integrated specialized actuators into its newest-generation SymBot, allowing the machine’s robotic arms to actively pull heavy payloads into its center.
KOID: Indexing the Supply Chain
To track the broader ecosystem, the KraneShares Global Humanoid Robotics and Physical AI Index ETF (NASDAQ:KOID) was launched to follow the MerQube Global Humanoid Robotics and Physical AI Index. Rather than focusing solely on software, the fund provides exposure to the entire humanoid ecosystem, explicitly targeting the “body” of the robot. This includes actuation systems, mechanical systems, sensing technologies, and the critical materials required to build them. MP Materials currently stands as one of the fund’s top holdings.
As the physical AI sector attempts to fulfill the multitrillion-dollar projections set by tech leaders like Huang, the speed of commercialization will ultimately depend on the manufacturing capacity of the actuator supply chain.
The Multi-Trillion-Dollar Vision: A Consistent Narrative
Huang’s staggering projections for physical AI are part of a consistent, multi-year narrative he has reiterated across several prominent industry platforms. At events like Nvidia’s GTC and on the BG2 podcast, Huang explicitly framed robotics and physical AI as a $50 trillion economic opportunity, comparing the impending automation of physical labor to the way electric motors revolutionized the Industrial Revolution.
Here’s How These Tickers Have Performed
| Stocks/ETF | 1-Month | 6-Months | YTD | 1-Year |
| MOG.A | -6.37% | 8.81% | 49.88% | 86.38% |
| MP | 29.90% | -8.71% | 6.37% | -24.46% |
| SYM | -11.22% | -30.23% | -35.76% | -19.42% |
| KOID | -2.76% | -1.85% | 10.99% | 19.24% |
Disclaimer: This content was partially produced with the help of AI tools and was reviewed and published by Benzinga editors.
Photo courtesy: Shutterstock
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