Norway’s clout in financial markets far outweighs its economy, which is about a 10th the size of Germany’s. The central bank’s $1 trillion investment fund plows the Nordic nation’s oil income into public securities and has become the biggest of its kind, owning about 1.4 percent of global stocks. Yngve Slyngstad, who grew up in Asker just outside Oslo and received multiple graduate degrees before devoting himself to finance, has been chief executive officer of Norges Bank Investment Management since 2008. The 56-year-old spoke to Bloomberg Markets about what makes a good money manager, how he learns about China’s economy,