Correction record
25 Aug 2026 · OSIQ 30 scheduled observation
Corrected the 25 August 2026 OSIQ 30 observation after an unmeasurable source-history PnL revision was treated as investment return. The equal-weight level was restated from 5473.64066249 to 115.83573727 using the same scheduled source capture; the affected constituent is frozen at its last measurable unit NAV. The superseded technical row remains preserved in the governed ledger.
Standard
Material factual, calculation, attribution or methodology-description errors are corrected promptly after verification. The updated publication records the date and nature of the change when it affects interpretation.
Index and methodology
Technical corrections follow governed data and methodology controls. Public explanations do not overwrite technical provenance or historical records.
Research
Substantive Research keeps an updated date and correction status. Minor spelling or formatting fixes may be made without a formal notice when meaning is unchanged.
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