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.

• 2026-09-10Meta's Muse AI-agent launch lifted the model-and-silicon layer while the data-center power-and-cooling chokepoint took heavy profits, led lower by Vertiv.
• 2026-09-09The AI-optics trade and a neocloud re-rate carried the compute chokepoints while mega-cap silicon slipped on a higher-oil, higher-rate tape.
• 2026-09-07A hot jobs report split the tape — mega-cap hyperscalers slipped on higher rates while semiconductor-equipment and memory names ripped.
• 2026-09-04Broadcom fell despite a beat as its guide disappointed, while power, cooling and neocloud names led a broad AI-infrastructure rally.
• 2026-09-03Credo cratered 20% on a beat-and-fade as electrical steel and power led the tape into Broadcom's print.
• 2026-09-02Power was the safe harbor as a Samsung-led chip selloff dragged the fabrication and interconnect layers lower into Broadcom's print.
• 2026-09-01Micron's sold-out HBM led the memory chokepoint higher while AI-interconnect names eased into Broadcom's Sept 3 print.
• 2026-08-31Marvell beat and signed Google yet fell hard as its long-term outlook underwhelmed elevated expectations, dragging the custom-silicon and packaging chokepoints while hyperscaler demand kept Amazon bid.
• 2026-08-28NVIDIA's blowout fiscal Q2 drove the accelerators chokepoint to a record single-day gain and lifted packaging and interconnect, while SK hynix's home line sold the news.
• 2026-08-27The optical-interconnect chokepoint led a second straight AI-optics session as Lumentum jumped 6% and Arista 6%, while advanced packaging extended its slide.
• 2026-08-26Optics led a risk-on chip rebound as Lumentum jumped 6.7%, while BE Semiconductor fell 4.2% on a hybrid-bonding adoption delay that hits the advanced-packaging choke.
• 2026-08-25A chip-led selloff hit the memory and optical-interconnect chokepoints, with Applied Optoelectronics down 13.8% on a $600 million equity raise and Micron off 5.8% on AI-server pricing fears.
• 2026-08-24A billion-dollar federal steel investment lifted the grid chokepoint while Marvell led the optical layer lower on warrant-dilution fears, splitting the AI-compute basket.
• 2026-08-21The optical-interconnect and memory-bandwidth chokepoints rallied against a red tape, with Lumentum up 6.2% ahead of Marvell's after-close print, while the power-and-grid names sold off.
• 2026-08-20SK hynix jumped 12.7% in Seoul on a fresh buyback and Marvell popped 9.8% on a $12.2B Google deal, but the chip-equipment choke sold off again as the market repriced AI capex.
• 2026-08-19Fabrinet crashed 19.4% on decelerating guidance and dragged the whole optical-interconnect choke down as the AI-infrastructure trade unwound; Ecolab's cooling layer was the rare green.
• 2026-08-17Applied Optoelectronics led the optical choke up 16% on the 1.6T re-rate while Broadcom fell 6% as BofA flagged $370B of AI chip-financing debt.
• 2026-08-14Micron led on memory-scarcity signals as DRAM pricing tightened, while Coherent's beat-and-raise sold off 8% and dragged the optical-interconnect chain down with it on margin-mix fears.
• 2026-08-13CoreWeave ripped 19% on a $100 billion-plus backlog and raised guidance, and the optical-interconnect choke exploded with it, while Meta fell 4% on capex and glasses headlines.
• 2026-08-12Onto Innovation jumped 10% on a backlog-record beat that lit up the whole metrology-and-equipment choke, while Alphabet fell 4% even as its capex surge underwrites the buildout.
• 2026-08-11The AI-optics complex de-risked hard into a week of earnings — Coherent fell 14% with no news of its own — while a tariff-protected electrical-steel name was the tape's lone green.
• 2026-08-10Onto Innovation's Q2 blowout sent the advanced-packaging metrology choke up 15% and a US transceiver-restriction report lit the optical layer, while FUJIFILM's ADR fell on a group profit miss driven by its bio-CDMO arm, not its chips.
• 2026-08-07The silicon-wafer chokepoint cracked — SUMCO fell 11% on a weak print — while the optical-packaging layer held, Fabrinet extending its run as memory and cloud names sold off across the AI-capex complex.
• 2026-08-06A memory-and-GPU rout hit the AI-capex complex — SK hynix fell double digits in Seoul and AMD sold off despite doubling its data-center business — while the one green choke was Ajinomoto's substrate-film monopoly.
• 2026-08-05A reported US ban on Chinese optical transceivers sent the interconnect chokepoint vertical, while the AI-power trade rotated hard the other way and Vistra sank.
• 2026-08-04CoreWeave led a near-uniform green session for the compute stack as the neocloud and power-and-cooling names ripped, and Amazon crossed a $3 trillion market cap.
• 2026-08-03Amazon's Q2 blowout put AWS at the apex of the compute chokepoint and dragged the power-and-cooling suppliers up with it, while memory took a breather after Thursday's blast-off.
• 2026-07-31Microsoft's demand-first capex guide detonated a full-complex rebound — memory, semicap, optics and neocloud all ripped double digits a day after the rout, with only Meta left behind on spending fears.
• 2026-07-30Vertiv's revenue miss triggered a 17% crash that took the entire data-center power-and-cooling complex down with it, while the semicap and memory rout ground on — the only green in the vertical was a private-fund NAV mark.
• 2026-07-29The AI-hardware rout deepened into a full capital-equipment and memory rout — Amkor's post-earnings crash led a broad breakdown while a cooling-water franchise was almost the only thing green.