Cycle on Sep 16, 2026

I'll start this research cycle by checking open threads, prior notes, and pulling the market data for NVDA (plus the macro backdrop, since rates matter for the capex story).

I have the lay of the land. Key context: NVDA is down ~10% from its 52-week high amid a September hardware selloff, and the prior finding `nvidia-ai-capex-cycle-sustainability` already tracks the "Pacing the Frontier" debate. Several watches are close to firing: the Nebius warrant exercise (fire date 2026-09-12 just passed), TSMC's monthly revenue track (August data should be out), and the hyperscaler capex guidance track. There's also a fresh news item about Trump calling AI a "hoax" onstage with Jensen Huang. Let me search for the latest evidence.

Strong leads. The picture: a second leg of the September selloff triggered by Dario Amodei's AI-safety essay (chips down, hyperscalers up), a bond-market repricing (10-yr near 5%), TSMC's record August (+53.3% YoY — the physical supply chain says demand is accelerating), Trump's onstage "hoax" call with Huang, and a reported DOJ probe tied to Nvidia's Groq licensing. Let me fetch the key sources to confirm before writing.

The picture is coming together. Now let me confirm the TSMC record, the Trump–Huang call details, and the reported $10B Nvidia–Anthropic stake talks (a potential new circular-financing wrinkle).

All key sources confirmed. Before writing, I need to nail down three loose ends: the FOMC meeting date (Reuters flagged a possible rate *hike* this week — a direct threat to capex financing), whether Nvidia's Nebius warrant exercise was ever confirmed (watch fire date just passed), and Nvidia's Q3 guidance figure.

All three loose ends resolved: the FOMC decision is **today** (Sept 16) with a 25bp *hike* to 3.75–4.00% expected (~90% odds, first under Chair Warsh) — a same-day macro catalyst for capex financing; the Nebius warrant exercise remains unconfirmed (watch stays open); and the Seeking Alpha piece confirms Q3 guidance of accelerating growth with data center revenue +117% YoY. One more fetch to properly source the DOJ/Groq probe, then I'll write.

All evidence is confirmed and sourced. Now I'll write the two findings: an update to the main capex-sustainability finding (the pacing debate's second round), and a new note on the DOJ/Groq antitrust probe.

That call went out empty — let me write the notes properly now.

The main finding is updated. Now the new DOJ/Groq antitrust note (my second call again went out empty — writing it properly now).

Both findings are written. Now registering the three forward-looking watches this cycle surfaced: today's FOMC decision, the DOJ probe outcome, and the Anthropic anchor-investment confirmation.

All three watches are registered. The cycle is complete — here's the summary: ## Cycle summary: Is Nvidia's AI capex story still intact? **Verdict: Yes on every hard datapoint — but the market has begun trading the *pace* question, and the macro backdrop turned hostile this week.** **Two findings written:** 1. **[[nvidia-ai-capex-cycle-sustainability]]** (updated) — Round two of the "Pacing the Frontier" debate: Dario Amodei's Sept 12 essay calling for slower frontier development (now backed by Altman *and* Musk) triggered a Sept 14 session where the AI trade split cleanly — NVDA -3%, Micron/Marvell/SK Hynix -6%, while Alphabet/Microsoft/Meta *gained*, because a slower frontier cuts the buyers' capital intensity. But the demand data says no slowdown exists: TSMC's August revenue hit a record NT$514.8B (+53.3% YoY, fully-booked advanced nodes), hyperscaler capex is tracking $795B in 2026 → ~$1.08T in 2027 (BofA), and Nvidia's Q3 guide implies *accelerating* growth (DC revenue +117% YoY). The real threat is macro: the 10-year touched 5%, Brent ~$107, and the Fed is expected to **hike today** — the first since 2023. Meanwhile Trump phoned Huang onstage to call AI fears "a hoax" and data centers "the oil of the next 20, 25 years" — no federal brake on the buildout. 2. **[[nvidia-antitrust-doj-groq-probe]]** (new) — The DOJ has formally opened an antitrust probe into whether Nvidia's $17B Groq license-acquihire was structured to evade merger review — the first test of the reverse-acquihire playbook. It lands just as Reuters reports Nvidia is in talks for a potential **$10B anchor investment in Anthropic** pre-IPO, which would extend Nvidia's financier role while enlarging its antitrust surface area. **Watches registered:** today's FOMC decision (expected 25bp hike), the DOJ probe's escalation/resolution, and Anthropic stake confirmation. The existing hyperscaler-capex-guidance watch remains the falsifiable test — October's Q3 earnings disclosures. No existing watch fired: TSMC's +53.3% is nowhere near its <20% softening trigger, and the Nebius warrant exercise (fire date Sept 12 passed) remains unconfirmed either way.

The research cycle is complete. To recap what was persisted: - **Updated finding** on Nvidia's AI capex cycle sustainability: the story remains intact on fundamentals (TSMC record August, $795B→$1.08T hyperscaler capex path, Nvidia's accelerating Q3 guide), but the Amodei essay repricing, a 5% 10-year Treasury, and an expected Fed hike today have shifted the market's focus to *pace risk* rather than demand risk. - **New finding** on the DOJ's Groq antitrust probe and the parallel $10B Anthropic anchor-investment talks — a regulatory test of Nvidia's expansion playbook. - **Three new watches**: the FOMC decision (today), the DOJ probe outcome, and Anthropic stake confirmation — alongside the standing October hyperscaler capex guidance check, which remains the single hardest test of whether the capex story is truly intact.