Platts to publish IODEX one-time differential

Platts, part of S&P Global Commodity Insights, will publish a one-time differential that may be used to amend iron ore fines derivatives and other contracts that settle against its IODEX CFR China and TSI Iron Ore Fines CFR China assessments from January 2026 onwards.

The published differential will be the average of Platts daily 62/61% Fe IODEX Basis Spread (FIOCS00) assessments for the July 1 to Aug. 29, 2025 period inclusive (IODEX Basis Spread Average).

The intention to publish a one-time IODEX Basis Spread Average follows Platts decision(opens in a new tab) to change the baseline quality specifications for its IODEX iron ore fines benchmark effective Jan. 2, 2026, following a period of market consultation and feedback.

Platts will publish the IODEX Basis Spread Average via a subscriber note after the 17:30 Singapore market close on Aug. 29.

Please send comments and questions to IODEX@spglobal.com and pricegroup@spglobal.com.