US Natural Gas Inventories Rise More than Expected: Prices React (Continued from Prior Part) Natural gas prices Natural gas prices fell by 1.42% between Friday, August 21, and Thursday, August 27. Prices closed at $2.638 per MMBtu (British thermal units in millions) on August 27. On August 21, prices had closed at $2.676 per MMBtu. Lower natural gas prices are negative for natural gas producers such as Chesapeake Energy (CHK), Southwestern Energy (SWN), QEP Resources (QEP), and Cabot Oil & Gas (COG). These companies make less money when natural gas prices fall. All of these companies combined make up ~2% of the Vanguard Energy ETF (VDE). With lower prices... More