@DanHandex @lisaabramowicz1 @GinaMartinAdams @TheTerminal Looks like in $XOM's case they take a 12-month average price measured by price in the first day of each month. Not only is price going to lower book val, but some reserves will have to be written off completely. The price chart is based on last day/month pricing but story same. https://t.co/Y5HsWkp72P