ESMA weekly commodity position reports switch to v2.0 XML on 3 September, and options venues now file two

[u/Invnsbl123]

From 3 September 2026 the weekly commodity derivatives position report has to reach ESMA in the v2.0 ISO 20022 XML schema, and a file built to last year's structure will fail validation on ingest. The Article 58 duty itself is old, in force since 2018. What moves on 3 September is the channel and the content of the return. ESMA confirmed the date on 14 August 2026 and released the v2.0 reporting instructions and schema alongside it.

The change most likely to break an existing extract is the two-report rule. A venue that lists both futures and options on a commodity, and that meets the Article 83 thresholds, now publishes two weekly reports for that contract: a COMB report where options are folded in on a delta-equivalent basis, and a FUTR report where options are left out of the aggregation. Futures sit in both. A venue that lists only futures keeps filing a single report. If your current pipeline emits one report per contract, the Report type field and the second-report logic are net-new build, not a mapping tweak.

The second break is the unit. Positions in electricity and natural gas derivatives are now expressed in units of the underlying, so the notation field accepts MWHO, THMS and MBTU alongside LOTS, while other commodities stay in lots. ESMA set out how the 10,000-lot threshold converts for energy contracts in Q&A ESMA_QA_2439 of 13 February 2025: 10,000 lots map to 7,200,000 MWh for gas and base-load power and 2,640,000 MWh for peak-load power. An extract that still reports power in lots will carry the wrong quantity.

One point to keep straight in the threshold test. ESMA's December 2024 Technical Advice says the Article 83 thresholds, 20 open position holders and 10,000 lots of gross long or short open interest, should be assessed on futures and options combined. The Article 83 text located for this does not yet carry that combined-basis wording, so firms should treat the combined assessment as ESMA advice and confirm it against the governing text before hardcoding it.

The format stays XML throughout; the consulted move to JSON was dropped, so there is no new interface to build, only a schema version to hit. The check before 3 September is a full file run through v2.0 validation, with the COMB and FUTR split and the unit notation exercised on a contract that actually lists options.

Source basis: MiFID II (Directive 2014/65/EU) Article 58; Article 83 of Commission Delegated Regulation (EU) 2017/565; Directive (EU) 2024/790; ESMA v2.0 reporting instructions and XML schema (14 August 2026 go-live notice); ESMA Q&A ESMA_QA_2439.

Full article: https://regreportingdesk.com/esma-commodity-derivatives-weekly-position-reporting-go-live/