First Trust AlphaDEX U.S. Materials Sector Index ETF Announces Cash Distribution for the Month Ending December 31, 2018, Payable on January 8, 2020

First Trust AlphaDEX U.S. Materials Sector Index ETF announced cash distribution of $1.3800 per unit for the month ending December 31, 2018. The cash distributions are payable on January 8, 2020 to Unitholders of record on December 31, 2019 with an ex-dividend date of December 30, 2019.