New Zealand Superannuation Fund (NZ Super) has posted a return of 20.71 percent for the year ended June 30, 2017, one of the best annual performances for the sovereign wealth fund, as it ended the year at a fund value of over $25.2 billion. The earnings by the Auckland-based fund were largely backed by a sustained rally in global equity markets and the fund’s “active investment strategies” that performed strongly during the year