The Brain — Humanoid Platforms & AI Models
The skeleton-makers themselves. Only one is publicly investable at scale.
The companies actually building the humanoid robots — putting joints, muscles, sensors, and AI brains together — are mostly private (Figure AI, Boston Dynamics, 1X, Agility, Apptronik, Sanctuary, Unitree, UBTech). Tesla is the one mega-cap public exposure. The AI inside the robot is the new race — Physical Intelligence (private), Skild AI (private), NVIDIA's Isaac/GR00T (a free option inside the AI thesis), and a wave of "robotics foundation model" startups. We list the few you can actually trade.
This is the most narrative-driven of the four robotics chokes. The flag-planting matters: whoever gets to a million units shipped first reshapes the entire supply chain. Tesla is currently leading by a wide margin on stated ambition.
2 names on the watchlist
Optimus humanoid + FSD/robotaxi — the only mega-cap humanoid pure-ish play
You know what they do. The thesis here is Optimus, not cars . Musk has repeatedly said Optimus could be a $10T+ business — even if it's 1/10th of that, it dwarfs the auto business. First commercial-ish units targeting late 2026/2027. The bet is that Tesla's vertical integration (motors, batteries, AI inference) gives it a cost advantage at scale that Figure/Boston Dynamics can't match.
$39B private valuation as of Feb 2025 — IPO chatter for 2026/2027
Not yet investable directly — but on every "secondary market" watchlist. If they file an S-1 in late 2026 or 2027, this becomes the most-anticipated robotics IPO ever. For now, the play is owning Figure indirectly through Microsoft (data center anchor), NVIDIA (compute supplier), and the gear-reducer / motor / sensor names listed above.