European markets are facing a crisis and must get their act together to fix it, the head of the world's biggest individual investor has said. Speaking to CNBC's Charlotte Reed on the sidelines at the Euronext Annual Conference in Paris, France, Nicolai Tangen, CEO of Norges Bank Investment Management (NBIM), called on Europe to "get our act together" when it comes to unifying the continent's capital markets. "Capital markets, we really need to get our act together. The winner takes it all," he