First Trust United Kingdom AlphaDEX ( FKU ) Launched in February 2012, FKU tracks the Defined United Kingdom Index and employs the AlphaDEX methodology of stock selection. Click to get this free report ISHARS-UTD KING (EWU): ETF Research Reports FT-UTD KINGDOM (FKU): ETF Research Reports To read this article on Zacks.com click here. The European Central Bank (ECB) recently slashed its benchmark lending rate from 0.25% to another historic low of 0.15% in order to boost economic growth and fight deflationary risks.