FTSE 100 notches thin gain with 1 day to Brexit vote By: MarketWatch June 22, 2016 at 04:09 AM EDT U.K. stocks edge up in the final day of trading before the U.K. holds its historic referendum on whether to stay in the European Union. Read More >> Related Stocks: BP Plc ADR Lloyds Banking Group Plc ADR Royal Dutch Shell Cl B ADR