Why higher yields are changing the investment playbook

Key takeaways:

• Capital is getting more expensive: governments, AI, defence and infrastructure are all competing for funding.
• Higher yields may mean something different: if fiscal risk is driving yields, the dollar may not strengthen and gold may stay supported.
• Portfolio leadership could shift: investors may increasingly favour cash generation, balance-sheet strength, income and diversification over leverage and long-duration bets.

Capital may be becoming the market's next scarce resource

For much of the post-global-financial-crisis era, investors operated under an implicit assumption: capital was abundant.

Low policy rates, central-bank asset purchases and subdued inflation reduced the cost of financing across governments and corporates. That backdrop supported long-duration bonds, growth equities, leveraged business models and increasingly ambitious fiscal programmes.

We think that regime is becoming more complicated.

The global investment cycle now requires significant capital across several competing areas.

1. AI infrastructure spending continues to rise.
2. Governments are financing large fiscal deficits.
3. Defence budgets are increasing.
4. Energy grids require substantial investment.
5. Manufacturing supply chains are being rebuilt closer to home.

None of these trends is inherently negative. In fact, higher investment could ultimately support stronger productivity and nominal growth.

But together they raise a different question:

What happens when several of the world's largest borrowers all want more capital at the same time?

The answer, in our view, may increasingly be that investors demand a higher price for providing it.

That makes the cost of capital an important macro variable again.

Not all higher yields send the same economic signal

Investors often treat rising bond yields as a single macro signal. But the source of the move matters.

When yields rise because economic growth is improving, productivity expectations are strengthening and corporate earnings prospects are being revised higher, higher yields can be consistent with a constructive risk backdrop.

We would describe those as growth-driven higher yields.

The interpretation is different when yields rise because investors require more compensation to absorb large government issuance, inflation uncertainty or fiscal risk.

That is closer to a term-premium-driven increase in yields.

The distinction matters because the second type of yield increase potentially tightens financial conditions without necessarily reflecting stronger underlying economic fundamentals.

We think current markets contain elements of both.

AI investment and fiscal spending can support nominal growth. But large borrowing requirements and persistent uncertainty around inflation and debt sustainability may also be pushing investors to demand a higher return for holding long-duration assets.

This may help explain why the long end of global bond markets has remained under pressure even as expectations for further near-term US monetary tightening have moderated.

Higher US yields may no longer be automatically dollar-positive

One of the more interesting features of the current environment has been the divergence between US yields and the dollar.

Historically, higher relative US yields have often supported the currency by attracting capital into dollar assets.

That relationship still matters.

But we think investors should increasingly ask why US yields are rising.

If yields move higher because US growth expectations are improving or because the Federal Reserve is expected to maintain tighter policy than other central banks, the dollar would typically be expected to benefit.

If yields rise instead because markets require more compensation for fiscal expansion, Treasury supply or long-term inflation uncertainty, the currency implication becomes less straightforward.

Put differently:

A higher yield generated by stronger economic fundamentals is not necessarily equivalent to a higher yield generated by a larger risk premium.

That distinction may help explain why higher Treasury yields have recently coexisted with less convincing dollar strength.

It could also have broader portfolio consequences.

For international investors, US assets have benefited for years from both strong underlying returns and a strong dollar. If that relationship becomes less consistent, geographical diversification may matter more.

Gold's resilience may be signalling something broader than monetary policy

Gold presents another challenge to the traditional macro framework.

Elevated real interest rates would normally be expected to create a substantial opportunity cost for holding an asset that produces no income.

Yet gold has remained remarkably resilient.

There are cyclical explanations. Expectations for further Federal Reserve tightening have moderated, geopolitical risks remain elevated and central-bank demand has provided structural support.

But we think there may also be a broader portfolio message.

Gold is increasingly being viewed not only as an inflation hedge but as an asset that sits outside conventional sovereign liability structures.

That distinction could matter in an environment where government borrowing remains high and investors are increasingly sensitive to fiscal sustainability.

This does not mean gold has become insensitive to yields.

Rather, we think its drivers have broadened.

Real yields, the dollar, central-bank demand, geopolitical risk and fiscal credibility may all matter simultaneously.

In equities, the cost of growth may matter as much as the rate of growth

The implications may be particularly important for equity investors.

For much of the low-rate era, businesses could be rewarded heavily for revenue growth even when that growth required significant external financing.

A higher cost-of-capital regime changes the calculation.

We think the market may increasingly differentiate between companies that can fund investment through internally generated cash flow and those that require sustained access to debt or equity markets.

That framework is particularly relevant to AI.

The AI opportunity remains structurally significant in our view, but the next stage of the cycle may place greater emphasis on capital efficiency.

The major hyperscalers are spending aggressively, but most also operate highly cash-generative core businesses.

Further down the AI infrastructure chain, funding models vary considerably.

That suggests the next phase of AI performance may be less about whether a company has AI exposure and more about the relationship between:

growth + cash generation + capital intensity + balance-sheet capacity.

Portfolio implications investors may consider

The broader implication, in our view, is not a simple rotation from equities into bonds or from growth into value.

It is a shift in what investors may want each part of the portfolio to achieve.

• Equities: Potentially prioritise earnings durability, strong cash generation and balance-sheet resilience, while still retaining exposure to structural growth themes.
• Fixed income: Income and carry may remain attractive, but investors may distinguish between earning yield and making an aggressive duration call. Short-to-intermediate high-quality bonds could remain relevant if long-end volatility stays elevated.
• Real assets: Gold and selected commodities may offer diversification if fiscal, geopolitical and inflation risks remain unusually persistent.
• Geography and FX: Greater dispersion between fiscal regimes, currencies and earnings cycles may make global diversification more valuable than it was during the period of overwhelming US market leadership.

None of these exposures is likely to work in every scenario.

The objective may therefore be less about identifying one winning asset class and more about avoiding a portfolio where the same macro assumption — falling yields, cheap capital or persistent dollar strength — drives every position.

The bigger regime question

The most important shift may ultimately be conceptual.

The previous market regime rewarded investors for assuming that capital would remain cheap and plentiful.

The emerging regime may reward investors for recognising that capital has a price again.

Governments need funding.

AI requires extraordinary investment.

Defence and energy infrastructure require capital.

And investors are increasingly able to demand compensation for providing it.

We do not think this automatically implies a bearish outlook.

If investment drives productivity, corporate earnings and stronger nominal growth, risk assets can still perform.

But the distribution of returns may change.

Companies capable of financing their own growth may command a premium. Governments may have to pay more to borrow. Long-duration assets may remain more volatile. And diversification across currencies, geographies and real assets could regain importance.

The key investment question may therefore be evolving from:

Where will the strongest growth come from?

to:

Who can fund that growth, what return will capital demand — and who ultimately bears the higher cost?

That, in our view, may be one of the defining portfolio questions of the next several years.