The New Zealand Super Fund has invested US$65 million ($93m) in Rubicon Global, an Atlanta-based waste and recycling technology company, to increase its exposure to small, fast-growing private companies.
Acting chief investment officer Mark Fennell said Rubicon was "an attractive opportunity for the fund to increase its exposure to expansion capital", with the firm yet to run an initial public offering.
Around 2 per cent of the Super Fund is in expansion capital, including fuel cell manufacturer Bloom Energy, dynamic glass manufacturer View Inc, and waste-to-energy company LanzaTech.
"As a long-term investor, the NZ Super Fund is able to invest in high growth companies with a view to realising long-term potential," Fennell said.
"These expansion capital investments are an important part of our investment mix because they can help drive long-run returns."