Copper concentrate prices slip into the shadows as negative treatment charges lose meaning
Reuters reports that negative copper treatment charges no longer reliably signal mine shortfalls, and the annual benchmark is fragmenting and less transparent.
- published on Newsmetry
- original source published
the same feed is available to bots and dashboards through the api. connect the api →
what happened
According to Reuters, citing a column by Andy Home, spot copper treatment and refining charges (TC/RCs) have turned negative, and they no longer reliably show the true state of mine supply. Antofagasta reportedly sold concentrate from its Centinela mine at a negative treatment charge of $310 per metric ton, while Teck Resources sold material from Highland Valley at roughly minus $370. Such numbers reflect smelters earning on by-products such as gold, silver and sulfur, along with complex contract terms, rather than paying miners for processing.
The annual benchmark is also losing transparency. This year's headline terms were set at zero, down from $21.25 per ton in 2025, but Japanese smelters reportedly agreed to different levels, and the details remain undisclosed.
why it matters
For the copper market, the usual gauge of mine shortfall has become less informative, since hidden side-terms make it harder to judge real concentrate supply and demand.
market impact
Copper: a weaker signal of raw-material shortage makes market supply harder to read
tags
instruments
sources
- Copper concentrate pricing slips into the shadows: Andy Home — Reuters, 3 November 2026 at 01:00 UTC
prepared by the newsmetry newsroom with ai assistance from the sources listed below. not investment advice.
alerts on your topics, the morning digest and the api — in your account.
get stories in real time ↗