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A press-briefing room seen from the back rows, a bull in a suit among the reporters; the title reads: A tariff of one hundred percent. In law: never.
Episode 11 · Investing in the AI Era · 11 min film
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Course Research · Episode 11

China, Export Controls and the Policy Layer

A policy was announced. Does it bind today?

The evidence-led takeaway

An announcement is not a rule.

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Researched Current29 pieces of evidence13 claims refused26 sources
SemiconductorsArtificial IntelligenceMonetary & FiscalFilings & DisclosureMarkets

In brief

What this research concludes

An announcement is not a rule.

The judgment skill this hands over

When a policy headline arrives, do not start with whether it is good or bad for a stock. Ask four things in order: what kind of thing this is (a statement, a proposal, a rule, or a notice to a company); whether it binds today (in force, suspended, delayed, struck down); whose gate it is, and whether there is a second gate; and where it would show up, in the filings of the companies it actually binds and in how those filings define the number.

What we investigated

A policy was announced. Does it bind today?

This is episode 11 of Investing in the AI Era, a 14-episode course. The film tells the story; this note is the research behind it, kept inspectable.

Who and what this looks at

NVIDIAAMDMarvell TechnologyTSMCBureau of Industry and SecurityMinistry of Commerce of the People's Republic of ChinaOffice of the United States Trade RepresentativeEuropean UnionThe White House

How we tested it

Researched to be refuted, not confirmed

Candidate claims went to an independent pass instructed to refute them against primary sources. Survivors became evidence; casualties became the refused list below.

The method, in the research team's own words

One research wave on 2026-09-05: seven primary-source policy-chronology lenses (written walled off from company outcomes) and nine outcome/adversarial lenses. Ten lenses died when the campaign hit the session limit; under the 2026-09-06 budget law a dead lane is finished and no second wave ran. Harvest used: US computing controls, AI diffusion and successors, China outbound controls, tariffs, EU AI Act, and the accelerator layer of pre-registration PR-1 (1 of 4 layers). Two TSMC facts joined from AI04. One refutation pass on 2026-09-13 over the claims the narration speaks (four refuters, one pass), including a change check for 2026-09-05 to 2026-09-13.

Pre-registered before any data was pulled

The firms, metrics and window for the quantitative work were fixed in writing before a single number was requested, so the result could not be cherry-picked after the fact. Every pre-registered case is reported regardless of direction. The full pre-registration is in the research desk.

What the evidence says

29 claims survived refutation

Each carries its source, the date the thing happened and the date it was said — two different facts — and its limits, stated by the research team rather than left for you to discover. Deterministic charts are drawn only from audited series; nothing on this page is illustrated as if it were a measurement.

Evidence · deterministic chart

NVIDIA fiscal 2025 China (incl. HK) revenue on two disclosure bases

Unit: USD millions

$17000$18000$19000$20000$21000$22000$23000$24000$25000FY2025FY2025
  • NVIDIA fiscal 2025 China (incl. HK) revenue on two disclosure bases$17108 → $25048
Source: NVIDIA Forms 10-K FY2025 and FY2026
How this chart was audited — and what it may not say

As disclosed. No transformation.

Show the remaining 24 pieces of evidence
1 further audited series are recorded but not drawn

  • Announced measures and their fates

    Source: See narratable_facts F01, F03-F13 · Audit: Each row is one instrument; dates copied from the primary-source lens entries. No transformation.

What surprised us

Where the simple story did not survive

Logged by the research lanes as they worked, before anything was written. The full log is in the research desk.

  1. 1

    No "July 2026 semiconductor tariff action" exists (closes AI01 open gap).

  2. 2

    The AI Diffusion Rule was never formally rescinded; it is codified and unenforced.

  3. 3

    NVIDIA held US licences for H20 and H200 and could not sell, because Beijing restricted the sales.

  4. 4

    NVIDIA fiscal 2025 China revenue is $17.1B or $25.0B depending on the disclosure basis.

  5. 5

    A US tariff on Chinese legacy chips was imposed at zero percent.

The strongest case against this

The evidence against our own conclusion

Carried at full strength, before the conclusion — not as a footnote.

  • F24
  • F25
  • F26
  • F27

Statement: An announcement that never binds is not nothing.

Concession: An announcement is evidence about what might bind. It is not evidence that it does.

History, under test

The strongest historical case

What the past licenses — and, stated just as plainly, what it does not.

NVIDIA H20, April 2025 to fiscal 2027

  • F17
  • F18
  • F19
  • F20
  • F21

Lesson: A licence from one government is not access to a market.

What would change our mind

The conclusion is wrong if…

If announced measures over the next year take effect as announced, on the dates announced, the gap closes.

What remains uncertain

What we still do not know

Stated by the research team, in full, rather than smoothed over.

  • Why BIS has left the AI Diffusion Rule codified but unenforced for sixteen months.
  • How a revenue share with no published regulation is collected, if at all.
  • How many is-informed licence notices exist that no listed company was obliged to disclose.
  • Whether either November 2026 suspension will be renewed, lapse, or be replaced.
  • PR-1 tool, EDA and memory layers: not run.
  • Taiwan concentration by any measured basis: not sourced in this harvest.
  • Whether H200 shipments into China have since been approved on the Chinese side (unverified press report).
  • Whether BIS publishes the formal diffusion-rule rescission before the fiscal year ends on 2026-09-30.

What we refused to publish

13 claims we would not say — and why

The do-not-narrate list. Some are popular; some are true but unproven; some are simply not this note’s to make. Each refusal is enforced in production, not just recorded.

5 Unverifiable6 Refuted1 Unresolvable1 Partly unverifiable
  1. UnverifiableX01

    “China's domestic AI-chip output: Huawei Ascend unit counts, SMIC yields, CXMT HBM stacks, domestic share of China's high-end AI market.”

    Verdict: UNVERIFIABLE - inherited from the pilot

    Why: Credible estimates for the same variable differ by more than 2x and none are company-disclosed. Carried forward by the AI11 contract.

  2. UnverifiableX02

    “The instruments that suspended the measures state that they were part of a deal, or one suspension was given in exchange for the other.”

    Verdict: UNVERIFIABLE - the BIS stay rule states no reason; the pairing is stated in the White House fact sheet as commitments within a deal, and a one-for-one exchange is not established

    Why: The film narrates the fact sheet as a statement and the stay rule as the instrument (F28, F29). It says nothing about MOFCOM Announcement No. 70's stated reasons, which were not checked.

  3. UnverifiableX03

    “Any export control or tariff caused a named stock to move.”

    Verdict: UNVERIFIABLE

    Why: No price-attribution analysis was run; AI10 owns co-movement.

  4. RefutedX04

    “The AI Diffusion Rule was formally rescinded or repealed in May 2025.”

    Verdict: REFUTED

    Why: Rescission was announced and enforcement suspended; no Federal Register rescission has been published as of September 2026.

  5. RefutedX05

    “China banned rare earth exports.”

    Verdict: REFUTED

    Why: Announcement No. 18 of 2025 is a global licensing requirement, not a ban. Announcement No. 46 of 2024 para. 1 (military end users) is a prohibition and is separate.

  6. RefutedX06

    “A "July 2026 semiconductor tariff action".”

    Verdict: REFUTED

    Why: No such action exists. Closed AI01 gap: see course/research/AI11-lanes/AI01-DEBT-RESOLVED.md.

Show the remaining 7 refused claims
  1. RefutedX07

    “A 100 percent semiconductor tariff was imposed.”

    Verdict: REFUTED

    Why: Stated 2025-08-06; never implemented by any instrument.

  2. RefutedX08

    “Measures that take effect immediately survive; long runways are where policy dies.”

    Verdict: REFUTED by the register

    Why: Gallium/germanium, graphite and antimony bound after 29-42 day runways; the Affiliates Rule and Announcement 62 took effect on publication and were suspended.

  3. UnverifiableX09

    “A percentage of the world's advanced chips made in Taiwan.”

    Verdict: UNVERIFIABLE - the Taiwan lens died before any measured basis was sourced

    Why: Widely repeated figures carry undefined bases (wafer starts, capacity, revenue). Not narrated.

  4. UnverifiableX10

    “The H20 licence notice was secret, unlawful or a hidden rule.”

    Verdict: UNVERIFIABLE - nothing in the record supports it

    Why: An is-informed notice is an established BIS mechanism; the film says only that it was not published as a rule.

  5. RefutedX11

    “Geographic revenue shows where chips were used.”

    Verdict: REFUTED by the issuers

    Why: NVIDIA, Broadcom and Marvell each say their geographic line is not end use; NVIDIA estimates 76% of Data Center revenue from Taiwan-headquartered customers was attributed to US and European end customers.

  6. UnresolvableX12

    “PR-1 findings for the tool, EDA and memory layers.”

    Verdict: UNRESOLVABLE - not run; those lenses died at the session limit

    Why: Those lenses died at the session limit; no second wave under the budget law. Nothing about those layers is claimed.

  7. Partly unverifiableX13

    “GTG-1002 as an established AI-orchestrated state cyberattack.”

    Verdict: PARTIALLY UNVERIFIABLE - inherited from AI09, where it was marked misleading

    Why: No published indicators of compromise; the vendor's own summary says the model overstated findings.

What to watch next

Dated material, and what would make it stale

  • US Affiliates Rule suspension ends

    Nov 2026

  • MOFCOM Announcement No. 70 suspension ends; Nos. 55-58, 61, 62 resume unless renewed

    10 Nov 2026

  • AI Diffusion Rule formal rescission still projected on the regulatory agenda

    unscheduled

  • Section 301 legacy-chip tariff rises from zero

    23 Jun 2027

  • EU AI Act Annex III high-risk obligations apply

    2 Dec 2027

  • Phase-two Section 232 semiconductor tariffs stated as coming (press-reported remarks, 2026-09-03); no rate, date or instrument as of 2026-09-13

    unscheduled

    Status: press only; not narrated

  • Formal Federal Register rescission of the AI Diffusion Rule reportedly planned within fiscal year 2026 (ends 2026-09-30)

    by 2026-09-30?

    Status: secondary only; would date N11

  • Press report of Chinese import approvals for H200s to ByteDance and Tencent

    undated

    Status: unverified press; would qualify F21 if confirmed

  • Reported Chinese leader visit to Washington around 2026-09-24 with rare earths on the agenda

    24 Sep 2026

    Status: unverified press

Evidence & sources

26 sources, by tier

Tier 1 is primary and authoritative — filings, regulators, official statistics. Journalism and books are attributed ingredients, never proof by reputation.

  1. JournalismPresidential remarks, Oval Office (with Apple CEO Tim Cook), 6 August 2025 — "approximately 100 percent" tariff on semiconductors (opens cnbc.com)supports F01
  2. Primary sourceProclamation 11002, "Adjusting Imports of Semiconductors, Semiconductor Manufacturing Equipment, and Their Derivative Products Into the United States," 91 FR 2443 (opens federalregister.gov)supports F02
  3. Primary sourceBIS Interim Final Rule, "Framework for Artificial Intelligence Diffusion," 90 FR 4544 (Jan. 15, 2025); RIN 0694-AJ90; Docket No. 250107-0007 (opens govinfo.gov)supports F03
  4. Primary sourceU.S. Department of Commerce press release, "Department of Commerce Rescinds Biden-Era Artificial Intelligence Diffusion Rule, Strengthens Chip-Related Export Controls" (opens media.bis.gov)supports F04
  5. Primary sourceBIS, "Guidance Regarding Enforcement of License Requirements for Advanced Computing Items for Entities Headquartered in Country Group D:5 and Macau" (May 31, 2026), with FAQ updated June 17, 2026 (opens bis.gov)supports F05
  6. Primary sourceBIS Interim Final Rule, "Expansion of End-User Controls To Cover Affiliates of Certain Listed Entities" (the "Affiliates Rule"), 90 FR 47201 (FR Doc. 2025-19001) (opens govinfo.gov)supports F06
  7. Primary source商务部 海关总署公告2025年第55号《公布对超硬材料相关物项实施出口管制的决定》 (Announcement No. 55 of 2025 on superhard materials) (opens mofcom.gov.cn)supports F07, F09
  8. Primary source商务部 海关总署公告2025年第70号《公布暂停实施商务部、海关总署公告2025年第55号、56号、57号、58号及商务部公告2025年第61号、62号的决定》 (Announcement No. 70 of 2025 suspending the six October 9 announcements) (opens mofcom.gov.cn)supports F08, F14
  9. Primary source商务部 海关总署公告2025年第18号《公布对部分中重稀土相关物项实施出口管制的决定》 (Announcement No. 18 of 2025 on certain medium and heavy rare-earth-related items) (opens mofcom.gov.cn)supports F10
  10. Primary sourceRegulation (EU) 2026/1744 of the European Parliament and of the Council of 8 July 2026 amending Regulations (EU) 2024/1689, (EU) 2018/1139 and (EU) 2023/1230 as regards the simplification of the implementation of harmonised rules on artificial intelligence (Digital Omnibus on AI), OJ L, 2026/1744, 24.7.2026 (opens eur-lex.europa.eu)supports F11
  11. Primary sourceNVIDIA Form 10-K FY2026 (filed 2026-02-25) Item 1A; AMD Form 10-K FY2025 (filed 2026-02-04) Item 1A; Marvell Form 10-K FY2026 (filed 2026-03-11) Item 1A (opens sec.gov)supports F12
  12. Primary sourceUSTR, "Notice of Action: China's Acts, Policies, and Practices Related to Targeting of the Semiconductor Industry for Dominance," 90 FR 60848 (opens federalregister.gov)supports F13
  13. Primary sourceBIS Interim Final Rule, "Implementation of Additional Export Controls: Certain Advanced Computing and Semiconductor Manufacturing Items; Supercomputer and Semiconductor End Use; Entity List Modification", 87 FR 62186 (FR Doc. 2022-21658), RIN 0694-AI94 (opens govinfo.gov)supports F15
  14. Primary source商务部公告2025年第62号《公布对稀土相关技术实施出口管制的决定》 (MOFCOM Announcement No. 62 of 2025, export controls on rare-earth-related technologies) (opens mofcom.gov.cn)supports F16
  15. Primary sourceBIS "is-informed" export licence requirement imposed on NVIDIA H20 and equivalent products (no Federal Register publication) (opens sec.gov)supports F17
  16. Primary sourceNVIDIA Form 8-K dated April 9, 2025 (filed 2025-04-15), Item 8.01; and NVIDIA Form 10-Q for the quarter ended April 27, 2025 (filed 2025-05-28), MD&A (opens sec.gov)supports F18
  17. Primary sourceNVIDIA Form 10-Q for the quarter ended July 26, 2026 (filed 2026-08-26), Item 1A Risk Factors (opens sec.gov)supports F19, F25
  18. Primary sourceNVIDIA Form 10-K FY2026 (filed 2026-02-25), Item 1A Risk Factors and MD&A gross margin discussion (opens sec.gov)supports F20
  19. Primary sourceNVIDIA Form 10-K FY2026 (filed 2026-02-25), Item 1A Risk Factors and MD&A Recent Developments (opens sec.gov)supports F21
  20. Primary sourceNVIDIA Form 10-Q for the quarter ended October 26, 2025 (filed 2025-11-19), Note on segment information, footnote (1) to geographic revenue table (opens sec.gov)supports F22
  21. Primary sourceNVIDIA Form 10-K FY2026 (filed 2026-02-25), Note 16 Segment Information, revenue by geographic area table; NVIDIA Form 10-K FY2024 (filed 2024-02-21), segment note (opens sec.gov)supports F23
  22. Primary sourceMarvell Technology Form 10-K FY2026 (filed 2026-03-11), Item 1A Risk Factors (opens sec.gov)supports F24
  23. Primary sourceTSMC investor communications and company announcements (opens investor.tsmc.com)supports F26
  24. Primary sourceTSMC second-quarter 2026 earnings conference call transcript, TSMC Investor Relations (opens investor.tsmc.com)supports F27
  25. Primary sourceThe White House, Fact Sheet: President Donald J. Trump Strikes Deal on Economic and Trade Relations with China (opens whitehouse.gov)supports F28
  26. Primary sourceBIS final rule; stay, 90 FR 50857 (FR Doc. 2025-19846) (opens govinfo.gov)supports F29

Complete evidence depth

The research desk

Everything the research evaluated before it was distilled — including what it rejected, and why.

The research desk

Before the evidence above was distilled, the research evaluated 153 candidate claims across 0 lanes, rejected 13 with a recorded reason, and logged 5 surprises. A rejected claim with a reason is the most reusable thing research produces — the desk keeps all of them.

118 No verdict25 Supported10 Corrected
  • laneChina's domestic AI-chip output: Huawei Ascend unit counts, SMIC yields, CXMT HBM stacks, domestic share of China's high-end AI market. (Id: X01; Verdict: UNVERIFIABLE - inherited from the pilot; Reason: Credible estimates for the same variable differ by…
  • laneThe instruments that suspended the measures state that they were part of a deal, or one suspension was given in exchange for the other. (Id: X02; Verdict: UNVERIFIABLE - the BIS stay rule states no reason; the pairing is stated in the White House fact…
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This page is a deterministic projection of canonical research artifacts. It adds presentation and discovery; it never adds, removes or softens a finding. Question taken from the descriptor; thesis from the packet. Projected 21 Sep 2026 by dowjo-research-projector v1.1.0 from origin commit c83c8797ab79.

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