Hedge funds with more than $16 billion have announced shutdowns so far in 2015, according to data compiled by Bloomberg. Fortress said Tuesday it’s closing its $2.3 billion macro business run by Michael Novogratz after posting losses for almost two years. Bain said last week it’s shuttering its macro fund, which sustained more than three years of declines. Hedge fund managers, among the highest-paid investors on Wall street, have struggled to navigate...