The stock market has spent much of the past several years rewarding big themes. Artificial intelligence has been the biggest. The technology is real, the potential is significant, and the investment surrounding it is enormous. But as the cycle matures, the central question for long-term investors is changing from “What can AI do?” to “Who will earn an attractive return on the capital being committed?”

That shift matters. Markets can be driven by narratives in the short term, but over time they tend to reconnect with cash flow, balance sheets, competitive advantages, and the price paid for an investment. In other words, fundamentals are beginning to retake center stage. We view that as a healthy and expected development.

The AI investment cycle
The infrastructure behind AI requires substantial spending on data centers, semiconductors, power, cooling, and related systems. As debt and credit markets finance more of this buildout, the outcome matters beyond technology companies. It also affects lenders, suppliers, utilities, real estate, and the customers who ultimately must support the investment through demand.

The key question is whether that spending produces durable cash flow soon enough to support continued investment. If it does, AI could create a broad and lasting economic benefit. If it does not, financing costs and debt burdens could slow the cycle. That is why we are paying close attention to both the promise of the technology and the economics behind it.

The bond market has an important vote
At the same time, the economic outlook has become more complicated. Inflation, government borrowing, private-sector financing needs, and uncertainty about monetary policy can all influence long-term interest rates.

The term “bond vigilantes,” coined by economist Ed Yardeni in the 1980s, describes bond investors who demand higher yields when they are concerned about inflation, deficits, or policy credibility. The Federal Reserve sets short-term policy rates, but the bond market has a powerful influence on the longer-term rates paid by households, businesses, and the federal government.

The larger lesson is straightforward: the cost of capital is determined by more than a single policy decision. If inflation remains persistent, borrowing needs remain high, or investors become less confident in the policy outlook, long-term rates can stay elevated. Those rates, in turn, affect the value and economics of long-duration investments, including many projects tied to AI infrastructure and the financial markets themselves.

The interaction between these two forces may be especially important over the next several years: a capital-intensive technology cycle seeking attractive returns, and a bond market requiring adequate compensation for risk.

What we’re doing in portfolios right now
Our response is not to abandon innovation or make an all-or-nothing market call. It is to demand more from each investment. Our Value + Quality™ perspective remains centered on owning strong businesses at attractive prices and adjusting portfolios as the evidence changes.

Our current playbook includes:

  • Monitoring sustainable free cash flow, rather than relying only on headline earnings growth.
  • Separating AI business models from AI infrastructure economics, because each can have different risks, capital needs, and potential returns.
  • Watching public and private credit markets, not just equity prices, for signs that financing conditions are changing.
  • Maintaining diversification, to reduce dependence on technology concentration, inflation, interest rates, or any single economic outcome.

This is security selection in its most useful form: examining balance sheets, financing needs, customer durability, competitive response, and valuation one company at a time. Strong reported fundamentals do not automatically mean that the broader expansion is balanced or low risk. At the same time, macroeconomic uncertainty does not eliminate company-specific opportunities to reduce risk, increase upside potential, or both.

Action for the future
Periods of transition can feel uncomfortable because yesterday’s simple story may no longer explain today’s market. If market volatility or the changing interest-rate environment has you wondering whether your plan should change, please call us. We can review your goals, timeframe, liquidity needs, and comfort with risk, then determine whether your portfolio still reflects what matters most to you.

Life Opens Up
Uncertain markets can consume more attention than they deserve. Make time for the parts of life that restore perspective: a walk outside, a good conversation, a project that absorbs you, or time with people who matter. Good financial decisions are easier when the market is important, but not all-consuming.

We welcome questions and suggestions for future Investor Insights articles. If there are topics you'd like us to explore, we'd love to hear from you.