The Government Pension Fund of Norway, one of the biggest pots of public money in the world, goes by other, less formal names too: the Petroleum Fund; Norway’s Oil Fund; the Fund for Norway’s Future. The latter might be a crushing cross to bear if not for the fact that the fund is so gigantic — it had nearly 2 trillion kroner ($294 billion) in assets at the end of June, surpassing the country’s $285 billion GDP and making it the second-biggest sovereign wealth fund in the...