In the corporate space, travel and leisure equities were some of the worst performers Monday following news that Ryanair had cut its full-year profit guidance. The stock sank 12.5 percent by the close, making it one of Europe's biggest losers. Other airlines were impacted by the news, with Easyjet down by 7 percent and Air-France-KLM dropping 4 percent.
In afternoon trade, Royal Mail shares tanked, after the postal service firm issued a statement on its performance. In the update, its group CEO Rico Back said that trading conditions in Britain were "challenging" and that its letter volumes had been impacted by business uncertainty, GDPR and ongoing structural decline. After the U.K. firm delivered its warning on profit and costs, shares sank some 18 percent.
German health firm Fresenius led Europe's gains, following a report that a Delaware judge ruled in its favor in a corporate dispute with Akorn. The judge's decision allows Fresenius to walk away from a $4.75 billion merger deal with the U.S. drugmaker. The stock surged 8.5 percent.
Linde was also one of the region's biggest gainers, closing up over 6 percent, after the group won regulatory approval from Chinese authorities to merge with Praxair.
Elsewhere, Danske Bank has appointed a new interim CEO. Jesper Nielsen, head of the Danish banking union, has replaced Thomas Borgen, who resigned last month after a money laundering investigation. Shares of the bank closed mildly higher.