Platts changes month rollover dates for US ethylene, propylene and propylene oxide price assessments

Platts, part of S&P Global Commodity Insights, has changed the month rollover dates for US ethylene, propylene and propylene oxide price assessments, effective May 1, 2024.

Under the change, Ethylene FD Choctaw, Ethylene FD Mont Belvieu, Poly Grade Propylene FD and Propylene Oxide FOB US Gulf Coast assessments now roll into the next month on the first of the month.

This means that the M1 assessments refer to the calendar month from the first working day of that calendar month through to the last working day.

This change aims to better reflect current market trading practices and reflect spot market liquidity in the last three calendar days of each month.

There are no changes to the specifications of these assessments.

Previously, Platts published prompt and forward month assessments for these products, which roll to the next month three calendar days prior to the end of the month.

The methodology for these assessments can be found in the Platts Americas Chemicals specifications guide.

The following symbols are affected:

The proposal for this change was published on March 8, 2024, and can be found here.

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

For written comments, please provide a clear indication if they are not intended for publication by Platts for public viewing. Platts will consider all comments received and will make comments not marked as confidential available upon request.