Platts launches new USGC pipeline unleaded 87 segregated batch assessments, eWindow instrument from Aug. 3

Platts, part of S&P Global Energy, has launched new assessments for segregated batches loading onto Colonial Pipeline for US Gulf Coast unleaded 87 regular gasoline, effective Aug. 3, 2026.

Platts previously announced the decision to launch the new assessments and eWindow instrument on July 1, and proposed the new assessments on June 5.

Platts continues to assess prompt-cycle fungible batches for regular unleaded 87 (M2 grade) gasoline in the Platts Market on Close assessment process.

Platts now assesses segregated batches, currently designated as 2M grade, as a differential to NYMEX RBOB futures, an outright price, and a spread to the fungible M2 assessment expressed in cents/gal.

Platts also launched a related eWindow instrument to reflect segregated batches. The new instrument is under the product name "Platts Gasoline 2M Seg" in the Platts eWindow.

The new symbols are as follows:

In line with Colonial Pipeline rules and market feedback, the minimum volume for segregated batch assessments is 50,000 barrels.

Bids and offers in the MOC are for a minimum volume of 50,000 barrels and can be increased in 50,000-barrel increments. Similar to other US gasoline eWindow instruments, participants are able to improve their bids or offers by 0.25 cent every 30 seconds and have the option to repeat their bid or offer in the event of a trade.

The minimum volume considered for Platts unleaded 87 regular gasoline fungible assessments (PGACT00) is not impacted by this change and remains 25,000 barrels.

From Aug. 3, the Platts Gasoline M2 eWindow instrument strictly reflects fungible batches for Colonial Pipeline's prompt cycle.

FOB USGC Waterborne unleaded 87 and swap assessments reflect the fungible unleaded 87 assessment as the basis for the calculations.

Trades published using the M2 instrument in the eWindow prior to the Aug. 3 launch are not impacted by this change.

The new segregated batch price assessments are published on Platts Global Alert and Platts Refined Products Alert pages 28, 156, 330 and 331 as well as in US Marketscan and the Oilgram Price Report.

Please send any comments or questions to americas_products@spglobal.com, pricegroup@spglobal.com and market_integrity_review@spglobal.com.

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