Practitioners — Lawyers · Last updated 11 Jun 2026 · Hallucination Register

Finding#1 . Misstated grandfather rule for existing QEP investors under prior thresholds

RLB Citation ID: RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q005

What the RLB Specialist Panel found

Finding#1 . Misstated grandfather rule for existing QEP investors under prior thresholds

Citation ID: RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q005-Opus47
AI's failure: AI misstated the regulator's stated rule on existing-investor grandfathering
Risk for the Lawyers: Regulatory enforcement / legal liability exposure on advice to existing CPO/CTA pools For lawyers working on CFTC Regulation 4.7 matters, the AI's stated answer reads as a verbatim quotation that a practitioner would paste into a memo, register entry, or client deliverable before verification against the source. The regulator's own text, however, records a different position. The final rule preamble states directly that a CPO or CTA is not required to redeem pool participations or terminate the advisory relationship of a person who qualified as a QEP under the previous Portfolio Requirement but who does not meet the updated Portfolio Requirement. Opus 4.7 produced an answer that turns on a 'pre-existing subscription agreement' carve-out theory and on a 'mechanical features of the existing subscription' analysis. Neither construct appears in the regulator's text. The grandfather rule operates by reference to the investor's prior QEP status, not by reference to subscription-agreement mechanics. For a lawyer drafting on this question, the immediate risk is that the AI's answer enters a client memo, board briefing, or transactional opinion without verification, and that the inconsistency surfaces later under counterparty review, regulatory inquiry, or internal QC.
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References — raw findings (per AI model)

RLB-H-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q005-Opus47 Claude Opus 4.7 (web search on)

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Cite this finding

Each finding has a stable Citation ID (RLB-F-… for aggregated case-study findings, RLB-H-… for raw per-model hallucinations) — like a DOI, the ID always resolves to the canonical finding even if URLs change.

RLB Citation ID: RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q005

Bluebook / OSCOLA (US + UK legal) Download

RegLeg Specialist Panel, Finding#1 . Misstated grandfather rule for existing QEP investors under prior thresholds [RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q005], RegLegBrief AI Hallucination Research (June 11, 2026), https://reglegbrief.com/regulators/j3/us/CFTC/CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024/practitioners/lawyers/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-005/.

Plain text Download

RegLeg Specialist Panel (2026). "Finding#1 . Misstated grandfather rule for existing QEP investors under prior thresholds — Practitioners — Lawyers." Citation ID: RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q005. RegLegBrief AI Hallucination Research, published 2026-06-11. https://reglegbrief.com/regulators/j3/us/CFTC/CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024/practitioners/lawyers/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-005/

APA 7th edition Download

RegLeg Specialist Panel. (2026). Finding#1 . Misstated grandfather rule for existing QEP investors under prior thresholds [Hallucination finding RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q005]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j3/us/CFTC/CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024/practitioners/lawyers/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-005/

BibTeX Download

@misc{reglegbrief_RLB_F_US_CFTC_CPO_CTA_REGULATION_4_7_QEP_THRESHOLDS_2024_Q005,
  author    = {RegLeg Specialist Panel},
  title     = {Finding#1 . Misstated grandfather rule for existing QEP investors under prior thresholds},
  year      = {2026},
  publisher = {RegLegBrief AI Hallucination Research},
  note      = {Hallucination finding Citation ID: RLB-F-US-CFTC-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-Q005},
  url       = {https://reglegbrief.com/regulators/j3/us/CFTC/CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024/practitioners/lawyers/finding/US-CFTC-US-001-CPO-CTA-REGULATION-4-7-QEP-THRESHOLDS-2024-v1-005/}
}

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Every finding on this page compares an AI subject's account of the rule against the regulator's verbatim text from the regulator's own portal. Both are linked. Each delta, its root causes, and impact analysis are documented and published with immutable Citation IDs.