A quarter-end report is a photograph. Markets do not stop moving while it is developed. We are writing about the second quarter in the third week of August, and in this instance the distance is useful rather than inconvenient: the story of this quarter is one nobody could have told on July 1, because what happened in July and the first weeks of August is what reveals the argument the second quarter had actually started.
The headline returns were extraordinary. That is the least interesting thing about them. Underneath the indexes, leadership moved in ways no one sequenced in advance — and while stocks were delivering their best quarter in six years, the bond market was already arguing with them about the price of money. That argument is where this commentary begins.
The Index Did Not Tell the Story
The second quarter was, by the headline numbers, extraordinary. The S&P 500 returned 15.2%, its best quarter in six years. The broad US market, as measured by the Russell 3000, gained 15.4%. But stopping at the large-cap index misses nearly everything interesting.
Small US companies gained 21.5%. Emerging markets returned 24.1%. Developed markets outside the United States advanced 10.2%. Global real estate rose 10.8%. Information technology led all US sectors at nearly 32%, while energy — with oil falling after the ceasefire — was the weakest, down more than 13%. By midyear the S&P 500 was ahead 10.2%, but small US companies had gained 22.6% and emerging markets 23.9%.
This was not another quarter in which the same handful of American giants carried everything. Leadership moved, and it moved in ways nobody sequenced in advance. June offered the clue in miniature: the S&P 500 slipped 0.95% over the month while the Russell 2000 gained 3.74%.
The clearest illustration sits in the corner of the portfolio least likely to be discussed. Broad commodities fell 8.1% in the second quarter, and gold fell 13.5%. Read alone, that looks like a drag. Read across the half year, it is the opposite: the commodity index is up 14.4% year to date while gold is down 7.4%. The sleeve delivered a strong first half, and it did so despite the single asset most investors reach for when the story is war, oil, and inflation. The return came from breadth across the complex — not from the metal the narrative said should have protected you. That is diversification doing precisely the job it is supposed to do, in the least intuitive way possible.
The same two-quarter pattern shows up in style. Growth stocks beat value across the board in the second quarter. Year to date, value still leads, with small-cap value up 23%. An investor who looked only at the quarter and an investor who looked only at the half would reach opposite conclusions about the same strategy in the same year.
The bond market, meanwhile, was already arguing with the equity market. The broad US bond index returned 0.67% for the quarter — positive, but barely. Municipal bonds were the standout at 2.5%, comfortably ahead of Treasuries. Underneath, the price of long-term money was climbing: the ten-year Treasury yield rose from 4.32% at the end of March to 4.47% at June 30, the two-year climbed 39 basis points to 4.2%, and the thirty-year ended near 4.95%. Stocks delivered their best quarter in six years while the cost of financing rose. That tension is the subject of the rest of this letter.
What July and August Changed
July did not reverse the second quarter so much as change what the market was arguing about.
US large-cap stocks were essentially flat, down 0.06%. Small caps fell 3.0% and emerging markets fell 3.1% after their extraordinary run. Developed international stocks were the only major equity market to advance, up 2.1%. Value gained while growth declined. Energy — the second quarter’s weakest sector — became July’s strongest, up nearly 13%, as oil prices rebounded. Information technology led the decliners on an AI-related selloff.
The sharper break was in fixed income. The broad US bond index lost 1.30% in July, ending a three-month winning streak. Investment-grade corporates fell 1.67%. Municipal bonds — the second quarter’s best major sector — fell 1.85% and underperformed Treasuries. The thirty-year Treasury yield reached its highest level since 2007, and it has climbed further into August.
The Federal Reserve held its target range at 3.50%–3.75% in July, but the vote was 9–3, with three regional bank presidents dissenting in favor of a hike — the first three-way dissent since 2016. Futures markets now price a rate increase at the September meeting as more likely than not, with additional tightening priced beyond it. At the start of this year, investors expected cuts.
That inversion deserves attention, because it breaks a reflex most investors acquired over the past fifteen years. A Fed that declines to tighten is not automatically easy money. If the bond market concludes that policy is insufficiently attentive to inflation, the long end tightens conditions on its own — and mortgage rates, corporate borrowing costs, and equity discount rates rise regardless of what the policy rate does.
Who Is Going to Finance All of This?
For several years the dominant investment question was how far artificial intelligence could lift profits and prices. The more consequential question now is different: who is going to finance it, and at what price?
The Treasury market remains the deepest government bond market in the world, but it is absorbing roughly $2 trillion of new federal borrowing a year, and the composition of buyers has changed. In 2007, central banks and commercial banks — holders who often bought Treasuries for reasons other than yield — accounted for roughly three-quarters of Treasury ownership. That share is now closer to half, with hedge funds and other price-sensitive investors more important at the margin, frequently financing positions with short-term borrowing.
This does not mean America cannot finance itself. It means something subtler: the marginal buyer increasingly asks what yield he will be paid. The government will sell the next bond. Whether it clears at 4.5% or 5.3% is the open question, and once the Treasury market names a price, the consequences travel. Every investment promising a return years from now must compete with a government security paying a meaningful yield today.
Now put the AI build-out into that same capital market. The largest technology companies are committing enormous sums to chips, data centers, power, and networks at the same moment Washington finances large deficits, governments rebuild defense and industrial capacity, utilities build generation, and households still need mortgages. These borrowers do not draw on separate pools of money. That is why the recent surge in technology-company bond issuance matters: AI has begun competing with governments for capital.
Japan reaches the same machinery from another direction. Years of very low Japanese rates made the yen a natural funding currency for positions in higher-yielding assets elsewhere. When the yen strengthens sharply, that borrowing becomes more expensive to repay, leverage comes down, and assets bought with borrowed yen can be sold — an American technology stock can fall not because its earnings changed but because the financing behind its ownership stopped working. Japan is also among the largest foreign owners of Treasuries. When Japanese authorities need dollars to defend the yen, one obvious source is that portfolio, which Washington has an evident interest in preventing at a moment when long-term borrowing costs are already under pressure. Japan’s currency problem has become part of America’s bond-market problem, and because the Treasury market prices credit worldwide, that has become part of global equity-market plumbing.
Valuation Is Now a Question About Earnings, Not Multiples
There is a genuine argument that the market has become cheaper: the S&P 500 rose substantially over the past year while its forward price-to-earnings multiple fell, because expected earnings rose faster than prices. There is an equally genuine argument on the other side: long-horizon measures such as the cyclically adjusted P/E sit near 41 times, and unusually high profit margins can make conventional multiples look benign.
We would not choose between them, because both can be true. A market can become cheaper against forecast earnings and still prove expensive if those forecasts embed margins that do not persist. The question is not the P. It is the durability of the E — and the durability of today’s margins depends partly on the financing costs discussed above.
The accounting deepens the puzzle. When a chip vendor sells equipment, it recognizes revenue quickly. The buyer capitalizes the purchase and depreciates it over years. The supplier’s economics therefore appear well before the buyer’s full costs do. We can know the merchant selling shovels is prospering long before we know whether the miners found gold.
Resilience Is Not the Absence of Risk
Investors have now survived a financial crisis, a pandemic, a European war, a tariff regime, and a Middle East conflict. Gillian Tett has made the useful observation that repeated survival can curdle into complacency: each new risk is met with the reflection that the last several did not break anything.
But resilience is evidence of resilience. It is not evidence that risk has disappeared.
There is a version of this that matters more than any of the market commentary. A higher price of capital is not only a risk to asset prices; it is also what changes the value of a future obligation. If a portfolio exists to meet real liabilities — a retirement income stream, tuition, a charitable commitment, an estate — the relevant question was never whether it beat an index over ninety days. It is whether the assets still line up against what they have to pay for, and when. Higher yields make that arithmetic easier in some places and harder in others, and which one applies to you depends entirely on what your money has to do and when it has to do it.
That is the case for diversification stated properly. Diversification is not pessimism, and it is not a forecast. It is the acknowledgment that apparently contradictory conditions coexist — exceptional corporate profits alongside a weakening labor market, where payrolls went from a gain of 172,000 in May to a loss of 23,000 in July with 103,000 of downward revisions; records in equities alongside a selloff in long bonds; genuine disinflation alongside renewed oil risk. None of these has to resolve neatly. They can simply persist together.
Some argue the world is moving toward a new economic operating system, in which national security, tariffs, industrial policy, and financial statecraft matter more than efficiency. They may be right. But there is an important distinction: there may be a new operating system for the global economy; there is not a new one for investing.
Diversification still matters, because leadership changes before anyone announces that it has. Valuation still matters, because revolutionary technologies can be poor investments if too much capital arrives at too high a price. High-quality bonds matter again, because an asset class dismissed during the zero-rate era now pays something. Taxes and costs matter because they remain among the few variables you actually control. And patience matters, because markets move faster than the stories later used to explain them.
For fifteen years, investors were accustomed to asking what return capital could earn. The question returning to markets is more fundamental: what will capital demand before it agrees to show up? The bond market has begun to answer.
If you have questions about how any of this maps to your own allocation, or whether a sleeve has drifted far enough from target to act on, reach out. That is the conversation worth having now, not a prediction about the next turn.
Regards,
John Gorlow
President
Cardiff Park Advisors
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Past performance is no guarantee of future results. Index returns are for illustrative purposes and do not reflect actual fund performance. You cannot invest directly in an index. The opinions expressed are those of Cardiff Park Advisors and are subject to change without notice. This material is for informational purposes only and should not be considered investment advice.
Sources: Dimensional Fund Advisors Returns Program and quarterly market review, Avantis Investors monthly field guides (June and July 2026), U.S. Bureau of Labor Statistics, U.S. Department of the Treasury, CME FedWatch. Market data as of June 30, 2026 except where a later date is noted.