CHOKEPOINT INSTRUMENT
Buy the chokes, not the robots.
Picks-and-shovels intelligence for the robotics supply chain. A humanoid needs ~20–40 actuated joints, actuators are ~56% of the BOM, and every one of them passes through a handful of chokepoints — reducers, roller screws, magnets, sensors, cells, silicon. This instrument tracks who holds each choke, where China sits, and whether you can actually buy it.
NVDA · CONC · INSULATED / 6324 · MONO · HARD / MP · CONC · POLICY-PRICED
70
INSTRUMENTS TRACKED
06
CHOKEPOINT LAYERS
2
MONOPOLY / DUOPOLY
4
CHINA-CONTROLLED
23
CHINA CHALLENGERS
34
RETAIL-ACCESSIBLE
09
INTELLIGENCE FILES
12
LIVE SIGNALS
THE CHOKEPOINTS
THE NUMBERS THAT MATTER
The load-bearing figures behind the map. Time-sensitive values dated and verified in the intelligence files.
20–40
ACTUATED JOINTS / HUMANOID
Every joint multiplies every actuation chokepoint.
≈56%
OF BOM = ACTUATORS
Linear 28.9% + rotary 19.9% on the Optimus reference BOM.
≈90%
CHINA · NdFeB REFINING
The live geopolitical lever. Export controls enforced since Apr 2025.
>63%
HARMONIC DUOPOLY SHARE
HDS + Leaderdrive — the duopoly changed nationality, it didn't break.
$1.4–2.7K
PER ROLLER SCREW TODAY
~14 per Optimus. The $20K robot needs a $200–400 screw.
2,070
THOR FP4 TFLOPS
The humanoid brain — the one chokepoint the US holds.
+1,459%
ROBOSENSE ROBOTICS UNITS YOY
Q1 2026 — robotics LiDAR overtook automotive for the first time.
13K→2.6M
HUMANOID UNITS 2025→2035E
Shipments rose ~480% in 2025 (Omdia). The demand wall behind every node.
NOV 2026
EXPORT-CONTROL HORIZON
China's suspended escalation expires — a pause, not a repeal.
THE PLAY
MATERIALS + POWER
NdFeB magnets: China refines ≈90% of global rare-earth output and uses it as a live geopolitical lever — enforced since April 2025, with the suspended escalation expiring ~Nov 2026. Battery cells: CATL and BYD dominate, and the binding humanoid spec is C-rate, not energy density. These are the supply-side chokepoints where China's position is strongest — and where the Western escape-valve producers (MP, Lynas, Noveon) are priced on policy.
🔴 CONTROLLED · ANODIZED BEZEL
COMPUTE + SENSING
NVIDIA Jetson/Thor is the humanoid brain — the one chokepoint the US holds, where export controls point outward and sanctions are a tailwind for the Chinese SoC challengers instead of a risk. Precision encoders (Renishaw, Heidenhain) and force/torque sensors (ATI, Bota) remain Western-concentrated. These are the chokepoints where non-China incumbents lead.
🟢 INSULATED · STEEL BEZEL
ACTUATION — THE CONTESTED HEART
Most of the BOM (~56% is actuators), most of the chokepoints, and the fiercest China challenge. The Japanese reducer duopoly is cracking at the harmonic seat (Leaderdrive), roller screws are localizing even faster (Wuzhou Xinchun, Beite, pre-IPO XJ), and Inovance is turning servo dominance into a humanoid component platform. Re-rating violence — both directions — lives here.
🟡 CHALLENGER · BRASS BEZEL
THE ACCESS PROBLEM
Most of the best chokepoint names are untradeable for Western retail: Tokyo listings without ADRs, A-shares behind Stock Connect, pre-IPO champions. The genuinely accessible names are crowded or proxy exposure. Every instrument carries an access readout — Easy, ADR, Connect, Hard, Private, Proxy — so you always know what a row is: a trade, or intelligence.
EASY · ADR · CONNECT · HARD · PRIVATE · PROXY
Every instrument is tagged on three axes: choke strength (Monopoly → Competitive), China position (Controlled → Insulated), and retail access (Easy → Private). The bezel finish on each gauge encodes the China position; the needle reads choke strength.
LATEST SIGNALS
FULL FEED →China NdFeB export controls tighten — rare earth licenses now required
China's Ministry of Commerce expands export licensing to cover heavy rare earth alloys and NdFeB magnet powder. New licenses take 45+ days. Western magnet makers face immediate supply gap.
SOURCE · CAIXIN
Nabtesco doubles RV reducer capacity — 2026 line now operational
Nabtesco's new Shonan plant reaches full capacity ahead of schedule, targeting 2M RV units/yr. Humanoid-grade cycloidal reducers now in pilot shipments to three OEMs.
SOURCE · NIKKEI
Leaderdrive (绿的谐波) secures Tesla Optimus harmonic reducer qualification
Leaderdrive completes 18-month qualification for strain-wave reducers on Optimus Gen-2. Volume shipments expected Q4 2025. Pricing reportedly 40-60% below Harmonic Drive Systems.
SOURCE · 36KR
NVIDIA Jetson Thor mass production — humanoid brain supply loosens
NVIDIA begins volume shipments of Jetson Thor SoC to robotics OEMs. Thor replaces Orin as the standard edge-compute platform for bipedal humanoids. Supply constraints easing.
SOURCE · NVIDIA IR
INTELLIGENCE FILES
ALL FILES →Nine chokepoint deep-dives, one per node — thesis, the numbers that matter, and the edge a Western investor couldn't assemble without Chinese-source reading.
Precision Reducers: the joint problem
DUOPOLY · CRACKING
Planetary Roller Screws: the linear-actuator chokepoint
CONCENTRATED · LOCALIZING FAST
NdFeB Magnets: the China lever
CONCENTRATED → CONTROLLED
LiDAR: the China cost-curve chokepoint
CONCENTRATED · COST-CURVE MOAT
Frameless Torque Motors & the Inovance servo story
CONCENTRATED
Six-Axis Force/Torque Sensors: the contested chokepoint
CONCENTRATED · ERODING
Edge-AI Compute: the inverted chokepoint
CONCENTRATED · NVIDIA-LED
Tactile / E-Skin: the successor chokepoint
COMPETITIVE · IMMATURE
Power: cells, C-rate, and the CATL double-play
CONTROLLED CELLS / COMPETITIVE ELECTRONICS
HOW IT WORKS
TAGGED WATCHLIST
70 supply-chain instruments tagged by layer, choke strength, China position, and retail access — the chokepoint holders, the Asian robot giants, and the retail-flow names X actually trades, each labeled honestly for what it is. A machined readout — not a tip, not a pick.
MONOPOLY · DUOPOLY · CONCENTRATED · COMPETITIVE
CHINA-SOURCE BRIEFS
Nine chokepoint deep-dives built from Chinese-language sources Western retail can't read — STAR-board filings, MOFCOM announcements, 36Kr supply-chain reporting. Dated, verified, cited. The bar is output a Western investor couldn't have assembled without Chinese-source reading and engineering literacy.
REDUCERS · ROLLER SCREWS · MAGNETS · LIDAR · MOTORS · F/T · COMPUTE · E-SKIN · POWER
INTERACTIVE CONSOLE
Query the chokepoint map. Filter by layer, choke strength, or China position. Drill into any instrument for the full dossier — role, choke position, bull and bear case, catalysts, performance, and the intelligence files that touch it.
SIGNAL FEED
Dated events across policy, capacity, demand, technology, and geopolitics — each tagged to the layer and instruments it moves. Export-control moves, capacity ramps, supplier qualifications, shipment inflections: the catalyst calendar for the whole map.
POLICY · CAPACITY · GEOPOLITICS · TECHNOLOGY · DEMAND