US natural gas futures increased 6.1% on April 19–26. Prices increased due to the larger-than-expected decline in natural gas inventories. The United States Natural Gas ETF (UNG) and the First Trust Natural Gas ETF (FCG) increased ~4.3% and 1%, respectively, on April 19–26. UNG seeks to track active natural gas futures. FCG aims to track the performance of the index of stocks involved in natural gas exploration and production.