Change to Fastmarkets’ base metals arbitrage calculation on August 25

Fastmarkets used the London Metal Exchange base metals prices at 08:59 GMT for the arbitrage calculations on Thursday August 25, because there was no data available at 08:00 GMT due to a system error.

The arbitrage calculator is published every day in line with the LME’s working calendar. For each day component parts are gathered as follows, as per our methodology:

1) Fastmarkets’ cif or in-warehouse premiums for copper, aluminium, zinc and nickel.

2) Close prices for copper, aluminium, zinc and nickel on the LME’s three-month select at 3pm Shanghai time.

3) Close prices for copper, aluminium, zinc and nickel on the Shanghai Futures Exchange front-month at 3pm Shanghai time.

4) Forex rate from the website of the People’s Bank of China at or around 3pm Shanghai time.

5) Spot premium/discount for each metal (copper, aluminium, zinc and nickel) from one local metals website in China; Fastmarkets uses the average value for each in the final calculation.

For Thursday’s publication, no price data was available for 3pm Shanghai time/8am London time for base metals prices, so the earliest price available (8:59 London time) was used in the calculation.

The affected prices:

MB-CU-0362 Copper import arbitrage, yuan/tonne
MB-CU-0361 Copper import arbitrage, $/tonne
MB-AL-0290 Aluminium import arbitrage, yuan/tonne
MB-AL-0289 Aluminium import arbitrage, $/tonne
MB-NI-0107 Nickel import arbitrage, yuan/tonne
MB-NI-0106 Nickel import arbitrage, $/tonne
MB-ZN-0084 Zinc import arbitrage, yuan/tonne
MB-ZN-0083 Zinc import arbitrage, $/tonne

For more information or to provide feedback on the delayed publication of these prices, or if you would like to provide price information by becoming a data submitter, please contact Sally Zhang by email at: pricing@fastmarkets.com. Please add the subject heading ‘FAO: Sally Zhang re base metals arbitrage.’

To see all Fastmarkets’ pricing methodology and specification documents go to https://www.fastmarkets.com/about-us/methodology.

What to read next
The publication of Fastmarkets' rand fixing prices per tonne for London Metal Exchange trade for Tuesday June 16, 2026 was delayed due to the unavailability of the Standard Bank $/rand conversion rate. Fastmarkets’ pricing database was updated once the rate was available.
Fastmarkets has decided to raise the minimum tonnage in its aluminium P1020A(MJP), cif Japan, spot premium assessment to better reflect significant spot market transactions.
The decision follows a one-month consultation period which ended on Monday June 15. Fastmarkets had also proposed to clarify the names of the four containerboard assessments: As part of the process of standardizing price nomenclature for forest products, their names will be as follows: The prices are part of the Fastmarkets Paper Packaging price package. To provide […]
The decision follows a one-month consultation period which ended on Monday June 15. South China, which includes the provinces of Guangdong, Guangxi and Fujian, accounts for 25 million tonnes of containerboard capacity annually, about a quarter of China’s total, according to Fastmarkets’ database. The region also holds around one-third of the nation’s corrugated converting capacity and […]
Fastmarkets has corrected its FP-PLP-0016 Pulp, fluff (US southern kraft, untreated, rolls), delivered US East, $/tonne, and FP-PLP-0009 Pulp, fluff, US southern kraft untreated rolls, cif Europe, $/tonne, which were published incorrectly on Friday June 12.
Fastmarkets is proposing to change the names of six current softwood pallet prices and add 102 new softwood pallet price assessments covering the North American market, effective July 29.