Correction to copper concentrates treatment and refinement charges indices on March 20 2026

The following affected prices have been corrected:

MB-CU-0287 Copper concentrates TC index, cif Asia Pacific, $/tonne was published in error as $(90.40). It has been corrected to $(90.50).

MB-CU-0288 Copper concentrates RC index, cif Asia Pacific, US cents/lb was published in error as (9.040) cents/lb. It has been corrected to (9.050) cents/lb.

MB-CU-0508 Copper concentrates TC implied smelters purchase, cif Asia Pacific, $/tonne was published in error as $(64.305). It has been corrected to $(64.41).

MB-CU-0509 Copper concentrates TC implied traders purchase, cif Asia Pacific, $/tonne was published in error as $(116.495). It has been corrected to $(116.60).

MB-CU-0510 Copper concentrates RC implied smelters purchase, cif Asia Pacific, US cents/lb was published in error as (6.4305) cents/lb. It has been corrected to (6.441) cents/lb.

MB-CU-0511 Copper concentrates RC implied traders purchase, cif Asia Pacific, US cents/lb was published in error as (11.6495) cents/lb. It has been corrected to (11.660) cents/lb.

Fastmarkets’ pricing database has been updated to reflect these changes.

The rationale for MB-CU-0287 was correct.

These prices are part of the Fastmarkets non-ferrous metals package.

For more information or to provide feedback on this correction notice, or if you would like to become a data submitter to these indices, please contact pricing@fastmarkets.com and basemetals@fastmarkets.com. Please add the subject heading “re: Copper concentrates indices.”

To see all Fastmarkets pricing methodology and specification documents, go to the Fastmarkets methodology page.