The information gathered through market surveys is considered in the final assessment alongside bids, offers and trades reported in the MOC. The firm bids, offers that are open to the whole market, and trades resulting from that take precedence in the final assessment.
These inputs are published throughout the day, in real-time, in the form of “market heards”, to allow Platts to test the information, which forms the basis of the assessment and for market participants to give feedback on those inputs.
Platts assessments normalize for a range of dimensions including timing/delivery dates, quantity, location, terms of trade and quality.
For more details, please refer to our LNG methodology and specifications guide.
What are assessment periods for WIM?
Platts publishes daily WIM LNG assessments for a total of five half-month periods. Platts assesses cargoes for delivery in the second, third, fourth, fifth and sixth half-month cycles forward from the date of publication. The WIM monthly assessment is based on the average of the two DES West India Marker half-months that match the JKM delivery month period.
The assessment rolls on the 16th of the month, or next business day after the 16th, to the following whole month. For example, on