Under the 2024 Regulation 1.25 amendments, what dollar-weighted average maturity standard applies to the overall portfolio of customer segregated funds, and which investment types are excluded from that calculation?
The model reproduced the 24-month ceiling correctly but appended a cross-regulatory methodology reference — SEC Rule 2a-7's WAM computation standard — that does not appear in the CFTC rule. This is a training-side cross-contamination: SEC Rule 2a-7's WAM methodology is a highly prominent concept in money market fund regulation, and the model appears to have grafted it onto the CFTC's maturity limit as a plausible-sounding elaboration. The CFTC rule specifies its own computation scope via exclusions; it does not incorporate 2a-7 by reference.
This finding implicates cross-regulator concept conflation in the training data. The model correctly retrieved the 24-month WAM ceiling but appended SEC Rule 2a-7's computation methodology as an elaboration — a cross-contamination that occurs when two regulators' frameworks share vocabulary and are trained in close proximity without independence annotations. The error is in the generation layer: the model added a plausible-sounding methodology reference not present in the retrieved CFTC rule text.
An AI response that correctly states the 24-month dollar-weighted average maturity ceiling but omits the exclusion of government money market funds, Treasury ETFs, and foreign sovereign debt from the calculation will cause Treasury to misconstruct its compliance measurement framework — including government MMF and ETF positions in a WAM universe that the rule explicitly scopes out.
The practical result is a WAM figure that is systematically incorrect, a compliance attestation based on that figure that is wrong, and quarterly segregated-funds reporting that does not reflect the rule as written. If the CFTC or NFA examines the firm's maturity-management controls and the methodology is found to deviate from the regulatory text, the firm faces a deficiency finding and potential enforcement action — with the additional reputational cost of demonstrating that a core quantitative compliance calculation was built on an incomplete reading of the rule.
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.
RegLeg Specialist Panel (2026). "Finding#2 — Dollar-weighted average maturity exclusion clause — Corporate Banking × Treasury — United States." Citation ID: RLB-F-US-CFTC-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-Q002. RegLegBrief AI Hallucination Research, published 2026-06-04. https://reglegbrief.com/regulators/j3/us/cftc/fcm-dco-customer-funds-investments-reg-1-25-2024/sectors/corporate_banking/treasury/finding/US-CFTC-US-001-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-v1-002/
RegLeg Specialist Panel. (2026). Finding#2 — Dollar-weighted average maturity exclusion clause [Hallucination finding RLB-F-US-CFTC-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-Q002]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/regulators/j3/us/cftc/fcm-dco-customer-funds-investments-reg-1-25-2024/sectors/corporate_banking/treasury/finding/US-CFTC-US-001-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-v1-002/
RegLeg Specialist Panel, Finding#2 — Dollar-weighted average maturity exclusion clause [RLB-F-US-CFTC-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-Q002], RegLegBrief AI Hallucination Research (June 04, 2026), https://reglegbrief.com/regulators/j3/us/cftc/fcm-dco-customer-funds-investments-reg-1-25-2024/sectors/corporate_banking/treasury/finding/US-CFTC-US-001-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-v1-002/.
@misc{reglegbrief_RLB_F_US_CFTC_FCM_DCO_CUSTOMER_FUNDS_INVESTMENTS_REG_1_25_2024_Q002,
author = {RegLeg Specialist Panel},
title = {Finding#2 — Dollar-weighted average maturity exclusion clause},
year = {2026},
publisher = {RegLegBrief AI Hallucination Research},
note = {Hallucination finding Citation ID: RLB-F-US-CFTC-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-Q002},
url = {https://reglegbrief.com/regulators/j3/us/cftc/fcm-dco-customer-funds-investments-reg-1-25-2024/sectors/corporate_banking/treasury/finding/US-CFTC-US-001-FCM-DCO-CUSTOMER-FUNDS-INVESTMENTS-REG-1-25-2024-v1-002/}
}