Investing.com — Aquis Exchange Plc’s (LON:) stock more than doubled on Monday (NASDAQ:) after the takeover announcement by SIX Swiss Exchange.  The deal places Aquis’ valuation at £194 million, marking a significant premium over recent trading values.  This move comes as SIX seeks to expand its reach in the European market, broadening its service offerings across asset trading, market data, and technology solutions. In a joint statement, SIX said that