Platts launches M3 FOB ARA styrene spot price assessment

Platts, part of S&P Global Energy, has launched a new free on board Amsterdam-Rotterdam-Antwerp (FOB ARA) styrene monomer price assessment to reflect loading during the third month from the date of publication (M3), effective March 23, 2026.

The assessment was first proposed in a note published Feb. 2, available here, and the communication to launch the assessment was published Feb. 23 in a note available here.

The assessment's specifications and terms mirror those of the existing M1 and M2 assessments. The M3 assessment also rolls to the next month five working days prior to the end of the publishing month.

The assessment takes into consideration price information gathered up to the close of the assessment process at 4:30 pm London time each day, including firm bids and offers, trades and indicative values, as well as any other data deemed relevant to the assessment process.

Details of the assessment are as follows:

A weekly average, published from March 27, will be available under symbol AAGBS04, while a monthly average, published from May 1, will be available under symbol AAGBS03.

The M3 assessment is published alongside existing European styrene assessments on Core and Petrochemical Alert fixed pages PCA0376, PCA0432 and PCA0338, and will be available in Europe & Americas Petrochemicalscan from April 10.

Please send all feedback, comments and questions to petchems@spglobal.com with a copy to pricegroup@spglobal.com

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