Diamondback Energy (NASDAQ:FANG) reported quarterly earnings of $4.23 per share which beat the analyst consensus estimate of $3.30 by 28.18 percent. This is a 6.83 percent decrease over earnings of $4.54 per share from the same period last year. The company reported quarterly sales of $4.240 billion which beat the analyst consensus estimate of $3.753 billion by 12.98 percent. This is a 4.74 percent increase over sales of $4.048 billion the same period last year.