Arxo Findings Register · Arxo Law

ARXO-2026-0390 · Reported

Basel Framework: MAR31.16 Table 1 row (D)

Row (D) of MAR31.16 Table 1 ends at 0.95 ≤ δ < 1.00, so a delta of exactly 1.00 falls in no bucket.

Consequence

Position: Deep in-the-money option risk factor with delta point exactly 1.00 and 40 real prices. Reading a: No bucket exists, so no observation can be counted Reading b: Treated as the 0.95 to 1.00 bucket, end point read as included Difference: 40 countable observations versus 0

Proposed correction

Clarify or correct the cited passage so that the rule and its references give one result for the stated case.

Issued by
Basel Committee on Banking Supervision
Act
Basel Framework MAR31 (in force 2023-01-01, published 2020-06-05)
Place
MAR31.16 Table 1 row (D)
Record
Discrepancy
Class
Text of the act
Where it arose
The text of the act
Arxo's conclusion
Confirmed
Official text
Unchanged at last check
Last checked
2026-10-31

Evidence

Reproduced by execution. Quotations are verbatim from the official material; translations are ours and marked.

| (D) | 0≤δ<0.05 | 0.05≤δ<0.3 | 0.3≤δ<0.7 | 0.7≤δ<0.95 | 0.95≤δ<1.00 | | | | | |
Normative text · Basel Framework MAR31 (in force 2023-01-01, published 2020-06-05) · MAR31.16 Table 1 row (D) · Published 2020-06-05 · retrieved 2026-10-31 · SHA-256 62b1e296370424eef959de82627be9c148263f7f3b78d2d0d09e26e127b393c1 · copy

How to check it without Arxo's tools

  1. Open Basel Framework MAR31 (in force 2023-01-01, published 2020-06-05) and find MAR31.16 Table 1 row (D). Compare the text with the quotation above. A copy is kept in this register: 62b1e296370424ee-MAR31@2023-01-01~2020-06-05.txt (SHA-256 62b1e296370424eef959de82627be9c148263f7f3b78d2d0d09e26e127b393c1, copy of the official file).
  2. The finding holds if the quoted passages read as shown and the comparison gives the result stated at the top of this page. If it does not, write to us with the record ID.

How this finding was made

AI models read the texts, built the examples and reviewed the findings.

Responsible institutions

Reported to

DateInstitutionChannelReference
2026-10-31Basel Committee on Banking Supervisione-mailhttps://mail.google.com/mail/u/0/#sent/KtbxLthRTjRNkqRtWGvxMWmXhVdckfWkGV

Responses

No response recorded.

History

  1. 2026-10-31Confirmed by Arxo
  2. 2026-10-31Entered in the register
  3. 2026-10-31Reported to Basel Committee on Banking Supervision (e-mail)

Cite this record

Arxo Law, Arxo Findings Register, ARXO-2026-0390, https://arxo.io/findings/ARXO-2026-0390/ (status as of 2026-10-31). Data: ARXO-2026-0390.json.