Utilizing data from RBN’s TradeView publication, the 3-2-1 refinery crack spread, the difference between the price of refined products (gasoline and diesel) and the price of crude oil in the Gulf Coast, rose more than 40% in the week ending March 15 (red dashed oval in chart below), its largest single week increase since mid-December, and the fifth largest weekly increase in the past four years. With the spread at just under $29/bbl as of March 15, this is its highest value since mid-September. In its simplest form, the 3:2:1 crack spread represents a rough measure of refinery profitability from the processing of crude oil into refined products such as gasoline and diesel, the two most widely used refined products in the U.S. Note that the 3:2:1 spread is strictly based on prices and does not include the cost of processing different crude oil streams and other factors which can be specific to each refinery and affect overall profitability from the production of gasoline, diesel, and other products.

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