Daily brief

Every weekday morning an AI co-pilot reads the overnight tape across the book, cross-references the catalyst calendar, and writes what moved and why.

• 2026-07-28Robotics split with the semis — design-and-simulation software and the battery and rare-earth inputs caught a bid while edge-AI silicon and semi-test names fell with the trillion-dollar chip rout.
• 2026-07-27Industrial software and motion held while robot chips, batteries and rare-earth magnets sold off; Knightscope cratered 15% on no material news.
• 2026-07-24Tesla's capex-shock miss and STMicro's guidance cut hammered the humanoid-and-motion-silicon chokepoint, leaving the whole robotics basket red.
• 2026-07-23A tripled preliminary revenue print sent micro-cap Knightscope up 46%, while Amprius fell another 6% on a credibility overhang — the basket's extremes both sat at the platform and power edges.
• 2026-07-22US automation and test names rode the memory-led chip rally — Teradyne jumped 12% — while Japan's precision-motion component ADRs went the other way, with THK the basket's laggard on its Tokyo session.
• 2026-07-21The Japanese precision-gear chokepoint rebounded — Nabtesco's ADR jumped 8.5% and the bearing-and-linear-motion tier ran with it — while Tesla slipped 3% into its Q2 print and micro-cap Knightscope led the tape down.
• 2026-07-20An open-source-EDA chip demo hit the simulation-software chokepoint hardest and the Japanese-Korean precision-gear tier was routed, while the actuator link held green.
• 2026-07-17Humanoid-and-automation beta unwound with the AI tape, and the rare-earth-magnet chokepoint got hit again — the software layer held while batteries and vision silicon led down.
• 2026-07-16The AI-brain layer led and the perception-silicon chokepoint lagged — Alphabet rose 3.2% on cooler CPI while Ambarella fell 5.5% in the semiconductor de-risk.
• 2026-07-15USA Rare Earth led on recycled heavy-rare-earth oxides while Yaskawa's ADR fell another 7.7% — the magnet chokepoint and the motion-control incumbent moved in opposite directions on the same supply-chain logic.
• 2026-07-14The robotics sell-off sorted by layer — the sensor-and-compute silicon fell 6–7% in the chip rout while precision-motion incumbents held, Allegro the laggard, Schaeffler the fractional leader.
• 2026-07-13Nvidia led robotics on July 10 as the humanoid-compute layer bid, while the actuation chokepoint was the pressure point — Allegro's sensors slipped and Yaskawa's servos cratered ~14% in Monday's Tokyo earnings rout.
• 2026-07-10Sensor and power-IC names drove the robotics map on July 9 — Allegro +11.5% on twin target hikes — while Japanese precision-bearing ADRs lagged.
• 2026-07-09The actuator chokepoint split on session timing July 8 — US motion names rebounded, Allient +5.0%, while Japan's strain-wave-gear suppliers fell in a Tokyo session that closed before Wall Street's bounce.
• 2026-07-08Humanoid and factory-automation names dumped with the AI tape on July 7 — energy-density and actuator suppliers down 8-11% — while Nvidia (+0.7%) was the basket's lone anchor.
• 2026-07-07Tesla jumped 6.7% on its Miami robotaxi launch, lifting the actuation-and-sensing chokepoint, while microcap Knightscope was the basket laggard at −6.9%.
• 2026-07-03The physical-layer robotics chokepoints cratered in the second-day chip rout (Teradyne −13.6%, Allegro −12.2%, Allient −11.9%), while simulation-software name PTC (+4.0%) held as capital rotated to the "brains."
• 2026-07-02The robot basket split cleanly along the software/hardware line — Unity +5.6% and PTC +5.4% as the simulation layer led, while Teradyne −11.7% was swept into the semiconductor-test rout.
• 2026-07-01Edge-AI silicon and the humanoid-joint gear chokepoint led the robotics basket — Ambarella +28%, Harmonic Drive +13.1%, Nabtesco +9%, Regal Rexnord +8.3% — while Lynas's rare-earth line lagged at −2.9%.
• 2026-06-30Allegro MicroSystems jumped 14.6% as the sensing-and-semis complex rebounded and Tesla rallied 8.5%, while the Japanese precision-gear ADRs lagged on a weak Tokyo tape — Nabtesco −6.2%.
• 2026-06-29The chip rotation reshaped the robotics tape Friday — simulation-software maker Unity led +5.7% while edge-AI silicon Qualcomm fell 7.6% in the semiconductor selloff.
• 2026-06-26Teradyne hit a record as Micron's blowout lit up the semiconductor-test chokepoint, while the Asian motion-hardware ADRs and speculative robotics names lagged.
• 2026-06-25Japanese motion-control suppliers firmed while US battery and rare-earth small caps unwound — Nidec's ADR +7.7%, Amprius −11.3%.
• 2026-06-23Tokyo's precision-motion chokepoint rallied — Harmonic Drive up 11% — even as Seoul's circuit-breaker crash dragged Boston Dynamics parent Hyundai down 12%.
• 2026-06-19The robot basket ran broadly green Thursday on the semiconductor rally — edge-compute, sensing and motion names led, with only software easing.
• 2026-06-18Rare-earth magnets and Japanese precision-reducer makers carry the robotics basket while high-beta software lags in the rate selloff.
• 2026-06-17Nidec's OTC ADR surged without an obvious catalyst while Serve Robotics absorbed further losses as fleet-operator costs overwhelm a thin revenue base.
• 2026-06-15Lynas extends its rare-earth-security premium as Serve Robotics absorbs post-acquisition losses — a session that separated supply-chain picks from early-stage fleet operators.