“These risks are being accentuated by geostrategic and geopolitical shifts.”
Morningstar said recent Middle Eastern tensions and higher oil prices were adding complexity to the required disinflation process.
“With the sticky inflation dynamic more embedded in interest-rate expectations, the outlook, particularly for risk-based assets, is becoming more challenging.”
Despite that, the allocation to riskier assets did not change in the three months to September.
The majority, 56 per cent, of KiwiSaver funds remained in growth assets, with the largest allocations in the September quarter held in international shares ($36.1b), cash and New Zealand bonds ($23.8b), international bonds ($18.2b) and New Zealand shares ($9.6b).
The total return on the New Zealand stock exchange Top 50 index was -5 per cent in the quarter, but positive by 2 per cent for the year.
Highlighting volatility in quarterly returns, Morningstar said it was best to assess returns over a 10-year period.
Over the past decade, the aggressive category has given investors an average annualised return of 8 per cent, followed by growth with 7.6 per cent, balanced with 6 per cent, moderate with 4 per cent and conservative with 3.9 per cent.
Most of the KiwiSaver pie, 68 per cent, was held by the top five providers.
ANZ has the leading market position, holding almost 20 per cent of funds, while Fisher Funds has bumped up to second with 15 per cent of the market after acquiring Kiwi Wealth.
ASB has now dropped to a close third, BT is the fourth-largest with 10 per cent market share, and Milford is fifth with 7 per cent of the market.