The optimal allocation of gold within an investment portfolio remains a subject of debate, particularly as the metal’s price volatility deters some investors. A study commissioned by Bank von Roll and conducted by the Department of Finance at the University of Zurich examined historical performance and risk metrics to determine effective gold weighting strategies.
The study found that portfolios with 85% equities and 15% precious metals—including gold and silver—outperformed pure equity portfolios over the long term. For Swiss investors with high equity exposure, researchers recommended a 9% allocation to silver and 11% to gold. When accounting for income taxes on bond interest and equity dividends, the optimal allocation for domestic investors rose to 25% in precious metals, while internationally diversified investors saw an ideal target of 30%.
The research compared gold’s performance to the MSCI World index from 1972 to early April 2026, excluding inflation effects. A $100 investment in gold would have grown to approximately $6,000, compared with roughly $3,400 for the MSCI World. However, reinvested dividends in equities would have increased the MSCI World’s value to about $14,800, though this advantage narrows significantly when dividend taxes are factored in. The study emphasized that gold cannot replace equities entirely but serves as a stabilizing asset during volatile periods.
To maintain target allocations, the study advocates a rebalancing strategy. For a 3% gold weighting, semi-annual adjustments are sufficient. Quarterly rebalancing is recommended for a 6% allocation, while portfolios with over 9% gold should be adjusted monthly. More frequent rebalancing is advised for higher allocations due to the asset’s volatility. Between August 2025 and January 2026, gold surged 61%, followed by a 26% correction by March 2026, underscoring the need for disciplined portfolio management.
The study concluded that gold and silver provide portfolio stability and liquidity during market stress, though they do not eliminate risk entirely. Active rebalancing helps investors avoid buying at peaks and selling at troughs, reinforcing a disciplined approach to precious metals investing.
