The New Zealand Superannuation Fund has awarded a $298 million risk-arbitrage mandate to a diversified international investment manager. : The New Zealand Superannuation Fund has awarded a $298 million (US$215m) risk-arbitrage mandate to a diversified international investment manager. Neuberger Berman won the customised mandate and its principal strategies group will oversee the investments. The mandate's objective is to generate uncorrelated absolute returns arising from mispricing opportunities related to corporate activity such as mergers and acquisitions, corporate restructurings and public offerings.