Milford has amassed more than $500 million in its KiwiSaver funds.
It ended 2015 with $523 million under management from 13,330 members.
Milford said its members had the highest average balance of any large KiwiSaver provider, at $39,230 compared to $11,950 for members across the scheme.
“Milford’s main objective is to achieve the highest possible return for KiwiSaver investors while also actively managing investment risk. We have a strong and experienced investment team of 14 based in Auckland and Sydney who are highly motivated to achieve this objective,” managing director Anthony Quirk said.
“KiwiSaver members need to be far more aware that investment returns matter. An additional 1 per cent return per annum over a long investment horizon can be far more significant than many people think,” he said.
“For example, a 35 year-old who achieves just 1 per cent higher investment returns across this 30-year period, could add over $100,000 more to their KiwiSaver retirement pool.”