 United Kingdom country-specific exchange traded funds have been outperforming since December as international investors are mollified by developments in the post-Brexit deal with the European Union. Since the late October lows, the currency-focused Invesco Currency Shares British Pound Sterling NYSEArca: FXB has increased 5.6 while the iShares MSCI United Kingdom ETF NYSEArca: EWU has advanced 27.0. 