Decision to amend frequency of US magnesium price assessment

Fastmarkets has decided to reduce the frequency of the publication of its price assessment for MB-MG-0005 Magnesium, 99.9% min, ex-whs Baltimore, to monthly from fortnightly.

After a consultation period, Fastmarkets has amended the frequency of this price, following positive feedback from market participants and internal data analysis, which suggested lower spot liquidity and price volatility recently.

Fastmarkets selects a publication frequency after considering the number of data points (deals, bids, offers, deals heard and assessments) that it can reasonably expect to collect on a consistent basis over the selected period to support the price assessment process.

The main pricing day will continue to be Thursday, but the magnesium price will be assessed once per month starting on Thursday April 3. The new specifications are listed below, with the amendment to the price frequency in italics:

MB-MG-0005 Magnesium, 99.9% min, ex-whs Baltimore, US cents per lb
Quality: Ingots and sticks, Mg 99.9% min, Fe 0.04% max, Si 0.02% max, Ni 0.002% max, Cu 0.01% max, Al 0.02% max, Mo 0.03% max, Cl 0.05% max, others 0.1% max, conforming to ASTM specifications B92/92M-11 and 9990A
Quantity: 20 tonnes
Location: Ex-warehouse Baltimore
Timing: Within 30 days
Units: US cents per lb
Publication: Monthly, first Thursday of the month.

This price is a part of the Fastmarkets Minor Metals package.

To provide feedback on this price, or if you would like to provide price information by becoming a data submitter to this price, please contact Rae Boyadjis by email at: pricing@fastmarkets.com. Please add the subject heading “FAO: Rae Boyadjis, re: US magnesium.”

Please indicate if comments are confidential. Fastmarkets will consider all comments received and will make comments not marked as confidential available upon request.

To see all Fastmarkets pricing methodology and specification documents, go to: https://www.fastmarkets.com/methodology.

What to read next
Fastmarkets has amended its pricing holiday calendar to show Monday June 29, 2026 as a non-publishing day for Black Sea grains and oilseeds prices.
This consultation, which is open until July 27, 2026, seeks to ensure that our methodologies continue to reflect the physical market under indexation, in compliance with the International Organization of Securities Commissions (IOSCO) principles for Price Reporting Agencies (PRAs). This includes all elements of our pricing process, our price specifications and publication frequency. You can […]
Fastmarkets has corrected the rationale for MB-CU-0287 Copper concentrates TC index, cif Asia Pacific, $/tonne, which was published incorrectly on Friday June 26 due to a typo.
Fastmarkets has launched a monthly price assessment for medium carbon ferro-manganese in Europe, effective on Friday June 26, following market requests for price transparency.
Fastmarkets has amended the frequency of its MB-NI-0246 Nickel sulfate, cif Japan and Korea, and MB-NI-0247 Nickel sulfate premium, cif Japan and Korea assessments to fortnightly from weekly, effective Friday June 26.
Fastmarkets has launched two monthly price assessments covering the solar photovoltaic (PV) module market and battery energy storage (BESS) cell market in China on Friday June 26, 2026.