Key Takeaways
- • NZ Super lowers equity risk premium assumptions significantly following its five-yearly benchmark review, driven by conviction that US equities are overvalued and will deliver lower long-term returns.
- • Methodology shift incorporates current market valuations more heavily into capital market assumptions rather than relying solely on 20-to-30-year equilibrium pricing models, making the fund's reference portfolio more "market-aware."
- • NZ$90 billion ($50 billion USD) sovereign wealth fund adjusts long-term return expectations, with the most material impact affecting government contribution levels and fund drawdown timing decisions.
- • Reference portfolio maintains 75% global equities, 5% NZ equities, and 20% fixed income allocation, though the fund has not yet disclosed updated asset class weightings following the review.
- • Brad Dunstan, co-CIO, attributes shift to US market valuation concerns, emphasizing the change reflects a tactical overlay on long-term capital market assumptions rather than a wholesale portfolio restructuring.
Summary
New Zealand Super Fund has reduced expected returns on its reference portfolio following its five-yearly benchmark review, citing overvaluation in US equity markets and expectations for lower long-term equity risk premiums. The NZ$90 billion sovereign wealth fund announced the move after determining that current US stock valuations no longer justify historical return assumptions when incorporating present market conditions into its capital market forecasts.
Brad Dunstan, co-chief investment officer, explained that the fund previously relied on 20-to-30-year "equilibrium" pricing constructs in setting return expectations, which remained relatively stable across review cycles. This year's review introduced a methodological variation by increasing the weight of current market valuations in the assumptions, making the portfolio's return expectations more responsive to present conditions. Dunstan stated: "We did lower [our] equity risk premia assumption by a reasonable amount," and emphasized that "we do it on a 20-to-30-year construct, so it's very stable through time and doesn't change that much. Largely this time around, we did a slight variation in our methodology, which was to bring more 'market-aware' assumptions into it."
The reference portfolio currently comprises 75 percent global equities, 5 percent New Zealand equities, and 20 percent fixed income, serving as both a risk-return guideline and benchmark for active strategies. While the fund has not disclosed specific changes to asset class weightings from this review, Dunstan indicated the return expectation reduction will have material implications for government contributions to the fund and timing of potential withdrawals.
The shift reflects broader institutional investor skepticism regarding US market valuations in mid-2026, with the fund's decision to embed current market conditions into long-term assumptions representing a tactical overlay rather than a fundamental portfolio overhaul. The timing and magnitude of the equity risk premium reduction remain undisclosed, pending further fund communications.
Brad Dunstan, co-chief investment officer, explained that the fund previously relied on 20-to-30-year "equilibrium" pricing constructs in setting return expectations, which remained relatively stable across review cycles. This year's review introduced a methodological variation by increasing the weight of current market valuations in the assumptions, making the portfolio's return expectations more responsive to present conditions. Dunstan stated: "We did lower [our] equity risk premia assumption by a reasonable amount," and emphasized that "we do it on a 20-to-30-year construct, so it's very stable through time and doesn't change that much. Largely this time around, we did a slight variation in our methodology, which was to bring more 'market-aware' assumptions into it."
The reference portfolio currently comprises 75 percent global equities, 5 percent New Zealand equities, and 20 percent fixed income, serving as both a risk-return guideline and benchmark for active strategies. While the fund has not disclosed specific changes to asset class weightings from this review, Dunstan indicated the return expectation reduction will have material implications for government contributions to the fund and timing of potential withdrawals.
The shift reflects broader institutional investor skepticism regarding US market valuations in mid-2026, with the fund's decision to embed current market conditions into long-term assumptions representing a tactical overlay rather than a fundamental portfolio overhaul. The timing and magnitude of the equity risk premium reduction remain undisclosed, pending further fund communications.
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