Managing the world’s biggest sovereign-wealth fund is about to get complicated

NICOLAI TANGEN(NBIMAKONBIM brings an unusual set of skills to the task of leading the world’s largest sovereign-wealth fund. In addition to a career in finance, the head of Norges Bank Investment Management ), which oversees Norway’s oil fund of $1.4trn, holds degrees in art history, economics and social psychology. Mr Tangen’s public profile and his musings on leadership, decision-making and cross-disciplinary learning have been admired by many Norwegians in his first year on the job. But the task of running Norway’s gargantuan piggy-bank is likely to become only more difficult in coming years.A fraught appointment process first thrust Mr Tangen into the limelight. The controversy centred on his potential conflicts of interest with Capital, the $20bn hedge fund he founded. After months of heated public debate he transferred his stake in the firm to charity before taking the helm at .