This infographic explains how OPIS assesses the Chicago spot market by looking at a day in the life of CBOB.
How OPIS Assesses Chicago Spot Prices
You want to use a price assessment that is an accurate reflection of the market's activity. OPIS provides that with veteran editors that watch the market all day long, covering the bulk of liquid trades. And we verify information with reliable market sources. We take our cues from the market to ensure our methodology works to your benefit.
Download this handy reference that easily breaks down the OPIS methodology so you know exactly how we assess Chicago spot prices for you!

Chicago Spot Price Assessments At-a-Glance!