Amplify Energy's (AMPY) stock price has been under pressure since the beginning of August. Shares have dropped 5.4% this month, underperforming the sector and the S&P 500. Some of the energy explorer’s losses can be tied to declining oil prices on the back of slower economic growth in China. But with the company also faring worse than its peers like W&T Offshore (WTI) and Ring Energy (REI) , there could be more than meets the eye.  August Price Performance Image Source: Zacks Investment ResearchIs the selli ...