Gold and Precious Metals in an Investment Portfolio

Gold is perhaps the most debated investment asset of all. Its detractors — including Warren Buffett, who famously said "gold has no utility" — argue that it produces no earnings, pays no dividends, and generates no economic activity. Its advocates counter that gold has been a store of value for 5,000 years, that it cannot be printed by governments, that it has zero counterparty risk, and that it is the only globally recognised asset that holds its value in genuine financial crises.

Both arguments contain truth. Gold is not a productive asset in the conventional sense — it does not compound earnings or generate cash flow. But it is also not simply a commodity with industrial uses. It is a monetary asset, a store of value, and a hedge against extreme financial stress that has no meaningful equivalent in conventional financial markets. Understanding what gold is — and what it is not — is the foundation for using it effectively in a diversified portfolio.

The Investment Case for Gold

Zero credit risk. Every financial asset — government bonds, corporate bonds, bank deposits, equity shares — involves counterparty risk: the risk that the issuer fails to meet its obligation. Physical gold in allocated storage has no counterparty. It is a direct claim on a physical commodity with 5,000 years of universal recognition. This is a genuinely unique characteristic that no financial instrument can replicate.

Non-correlation with financial assets. Gold's most valuable portfolio characteristic is its historically low or negative correlation with equities during stress events. In 2008, gold was one of very few assets to post positive returns as equities fell 40-50%. In the 2020 COVID crash, gold held its value during the initial equity selloff and subsequently rose. In the 2022 rate shock, gold was approximately flat while equities fell 20-25% and bonds fell 10-20%. It is not a perfect hedge — in acute liquidity crises, gold can fall initially as investors sell everything to raise cash — but over stress periods it consistently outperforms equities and often bonds.

Monetary and currency debasement hedge. Gold has historically maintained its purchasing power over very long periods. Investors who are concerned about currency debasement — the loss of purchasing power due to excessive money printing — have traditionally held gold as a hedge. The extraordinary monetary expansion following the 2008 financial crisis and the COVID pandemic increased this concern for many sophisticated investors.

Portfolio diversification. The academic portfolio construction literature (going back to Harry Markowitz's Modern Portfolio Theory) consistently shows that adding an uncorrelated asset to a portfolio improves its risk-adjusted return. Gold's long-term correlation to equities is approximately -0.1 to +0.1 — genuinely low. Adding 5-10% gold to a 60/40 portfolio has historically reduced volatility without significantly reducing expected return.

The 2020-2024 Gold Story: Why Old Rules Broke Down

The traditional analytical framework for gold pricing held that gold was inversely correlated with real interest rates. When real yields (nominal yields minus inflation) are high, holding non-yielding gold has a high opportunity cost. When real yields are low or negative, the opportunity cost falls and gold becomes more attractive.

This relationship held reasonably well for decades. And it broke down conspicuously in 2023-2024. Gold reached successive all-time highs — surpassing $2,000, then $2,400, then $2,500 per troy ounce — at a time when US real yields were rising (because nominal yields rose faster than inflation expectations normalised). By conventional analysis, gold should have been under pressure.

The explanation lies in the extraordinary surge in official sector gold buying. Central banks globally purchased over 1,000 tonnes of gold per year in both 2022 and 2023 — more than double the average pace of the prior decade. The buyers were predominantly non-Western central banks: the People's Bank of China, the Reserve Bank of India, the Central Bank of Turkey, the National Bank of Poland, and others. The motivation was explicit in most cases: diversification away from USD-denominated reserve assets following the US use of financial sanctions against Russia (freezing Russian central bank USD reserves in 2022 — a move that concentrated the minds of central banks everywhere about holding large USD positions).

This structural buyer — less sensitive to real yield mathematics — fundamentally altered gold's short-term price dynamics. For the medium-to-long term, the non-Western central bank diversification theme is likely to continue regardless of where US interest rates go.

The Different Ways to Invest in Gold

Physical gold: coins and bars. The most direct form of gold ownership. Gold coins — particularly UK Royal Mint-issued Britannias and Sovereigns — are CGT-exempt for UK-domiciled investors, a significant tax advantage. One-ounce Britannia coins are the most convenient denomination for HNW investors (a single coin represents approximately £3,000-£3,300 at 2026 prices). Bars (from 1g to 400 troy ounces) are available from the Royal Mint, BullionVault, and specialist dealers. Storage options include home safes (insurance considerations apply), bank vaults, and specialist gold vault operators (BullionVault, GoldMoney, Royal Mint Vault).

Physical gold ETCs. Exchange Traded Commodities backed by allocated physical gold allow investors to hold gold economically, with the convenience of share trading and storage handled by the ETC issuer. The iShares Physical Gold ETC (IGLN) and WisdomTree Physical Gold (PHAU) are large, liquid UK/European-listed products backed by LBMA-grade gold bars held in allocated form in bank vaults. These are not CGT-exempt (unlike physical coins for UK investors) but are accessible through ISAs and SIPPs, which provides equivalent tax efficiency for most investors.

Gold miners. Gold mining companies provide leveraged exposure to the gold price, amplified by operational leverage (fixed production costs relative to variable gold revenues). The major miners — Barrick Gold (Canada, world's second-largest), Newmont (US, world's largest by production), Agnico Eagle (Canada, generally considered the highest-quality major) — are large, liquid listed companies. They carry risks beyond the gold price: production cost inflation, project development failures, geopolitical risk in mining jurisdictions (Barrick operates in Nevada, Canada, Tanzania, the Dominican Republic, PNG, and Mali), and management execution.

Gold royalty companies. An alternative to owning miners directly, royalty companies (also called streamers) provide financing to mining companies in exchange for a royalty (typically a percentage of future production) or a stream (the right to buy a fixed quantity of production at a fixed price). Franco-Nevada and Wheaton Precious Metals are the two largest. They have lower operational risk than miners (they don't run mines) but maintain upside exposure to gold production. They trade at premiums to pure miners but have historically delivered better risk-adjusted returns.

Gold-focused investment funds. The BlackRock Gold and General Fund is the most prominent UK-listed active fund focused on gold miners. It provides diversified exposure to the mining sector.

Silver, Platinum, and Palladium

Silver has both monetary characteristics (store of value, historically used as money) and significant industrial demand (solar panels, electronics, photography). It is more volatile than gold, with a smaller and less liquid market. Silver's "gold/silver ratio" (the number of ounces of silver needed to buy one ounce of gold) has historically been 40-80x; extremes in this ratio have sometimes signalled relative value opportunities. For most HNW investors, silver is a secondary or tactical position rather than a core precious metals allocation.

Platinum is primarily an industrial metal — its main demand source is catalytic converters in petrol and diesel vehicles, plus industrial chemical processes. Jewellery demand provides some monetary characteristic. Platinum has underperformed gold significantly over the past decade as EV adoption threatens the primary demand driver. It may represent value relative to gold at current price levels, but the industrial disruption risk is real.

Palladium is predominantly industrial (autocatalytic converters in petrol vehicles), with limited investment demand. Its price is highly correlated to automotive production cycles and the pace of EV adoption. It is not typically considered a portfolio diversification tool.

For portfolio purposes, gold is the primary precious metals allocation. Silver can be added in small quantities (1-2%) for investors who want broader precious metals exposure. Platinum and palladium are industrial commodity positions, not monetary hedges.

Portfolio Allocation: 5-10% for Most Balanced Portfolios

The conventional wisdom from institutional portfolio construction and academic research suggests that 5-10% gold is appropriate for a broadly diversified portfolio.

The logic: below 3%, gold has negligible impact on portfolio risk metrics — it's a rounding error. Above 15%, gold's own volatility (which can be very high in short periods — gold fell 30% in 2012-2013 and 10% in 2021) begins to increase overall portfolio volatility without proportionate benefit.

The 5-10% range sits in the zone where gold's negative correlation to equities reduces overall portfolio volatility meaningfully, the cost of holding a non-yielding asset is manageable, and the tail-risk protection is material.

For internationally mobile investors with multi-currency portfolios, gold is particularly valuable because it provides a hedge that is currency-neutral — it is not denominated in USD, GBP, EUR, or any other single currency, reducing the currency basis risk that affects bond-based hedges.

How Global Investments Can Help

Gold is one of the few assets where the method of holding matters significantly for internationally mobile HNW investors — physical coin CGT exemption for UK investors, SIPP and ISA eligibility for ETCs, storage logistics for physical holdings, and estate planning considerations for allocated physical gold. Our advisory team helps clients access gold in the most appropriate form for their tax residency, portfolio size, and storage preferences, and ensures it is integrated into the overall portfolio as a deliberate allocation rather than an afterthought. Past performance of gold is not a guide to future performance; gold can fall sharply in the short term; investments can fall as well as rise; seek professional financial advice.