three most important us refineries (marathon/valero/phillips66) vs wti/brent

interesting correlation since 2015 and fall in oil price due to last oil war (2014, opec vs shale)

the 3 companies refine half the daily barrels of the top 11 refineries in us

own more refineries than the next 8 companies of the top 11

according to date from january last year, dont know if they have changed since
Chart Patterns

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