If you look at the example of todays trading on DK, it shows me that with no news a company like DK with plus numbers and consistent earning beats, will swing $1 easily during the day on unconnected fear and market sentiment. Algo's get to make money on the way up and down and retail is not well informed or aware of any due diligence... It shows the lack of discovery in the market these days... unrelated speculative fear of something unseen.
The $30 $40, $50, $60 dollar DK shares over the last 6 months have earned money each quarter but you sure would think different if all you saw was what the share price was in that time. $61.50 on JUNE 1st, $34.90 on Oct 26th.
Money was earned in refining at all the different speads and prices of crude too. We know they are making great cash flow all segments & locations, don't have heavy debt burden, ...but one gem in particular close proximity to Permian crude... they didn't have to pay that refinery's partners for the great earnings a year ago did they.