The Russian capital has climbed past Hong Kong with 90 ultrawealthy residents, according to a Forbes report Moscow has jumped to second place among the world’s top cities for billionaires, after adding new ultrawealthy residents over the past year, according to the Forbes World’s Billionaires List. The Russian capital’s billionaires now hold a combined fortune of $409 billion. The report , issued this week, said the growth in billionaire residents pushed Moscow ahead of Hong Kong, which tied