Millennials are increasingly interested in sustainable investing and in many cases are instilling their social and environmental values in their parents.

There is a rising global movement towards responsible investing, but how can new KiwiSavers know how to invest without causing harm? Rebecca Stevenson caught up with Kiwi Wealth’s Steffan Berridge to discuss the ins and outs of ethical investing.

The $37 billion NZ Super Fund said it won't invest in companies involved in the recreational cannabis industry.

The move, announced on Monday evening, came on the eve of Parliament debating a bill to legalise medicinal use of cannabis.

The NZ Super Fund, which is New Zealand's giant sovereign wealth fund designed to help pay for NZ Super for tomorrow's pensioners, started the moves to exclude recreational cannabis in September before the Labour-led government assumed power.

KiwiSaver investors care if their savings cause environmental or social harm. And many more would care if major fund managers backed up their commitments to responsible investment with action.