Markets Push Higher as Investors Balance Optimism and Uncertainty

June 1, 2026

Executive Summary

Markets begin June with a cautiously constructive backdrop. Strong corporate earnings, continued AI-driven investment, and optimism surrounding a potential U.S.–Iran agreement continue to support risk assets, helping the S&P 500 extend its rally through May. At the same time, inflation remains above target, market leadership remains unusually concentrated, and Federal Reserve officials have adopted a more hawkish tone as geopolitical and energy-related risks complicate the inflation outlook.

Key Takeaways:

• The S&P 500 posted its ninth consecutive weekly gain and is up nearly 20% since the March 30^th low, though just 20 stocks have accounted for nearly 80% of the advance.
• Optimism surrounding a potential U.S.–Iran agreement has helped lower oil prices, supporting risk assets despite continued geopolitical uncertainty.
• Economic data remain consistent with a mid-cycle slowdown rather than a recession, supported by resilient consumer spending, stable labor markets, and ongoing business investment.
• Inflation remains elevated, with Core PCE still running above 3%, while consumers continue to spend faster than income is growing.
• Federal Reserve officials increasingly emphasize upside inflation risks, and markets now assign a greater probability to a rate hike than a rate cut by year-end.

Financial Markets

U.S. equity markets continued their impressive advance last week, with the cap-weighted S&P 500 posting its ninth consecutive weekly gain and closing May with a return of more than 5%. Since the March 30^th market low, the cap-weighted S&P 500 has risen nearly 20%, substantially outperforming the equal-weighted S&P 500, which has gained approximately 11% over the same period. As we have highlighted in recent weeks, the rally remains unusually narrow. A relatively small group of mega-cap technology, semiconductor, and AI-related companies continues to drive index-level performance. In fact, just 20 stocks have accounted for nearly 80% of the S&P 500’s gains since the March low. While strong earnings growth and continued AI-related investment continue to support the equity market, narrow leadership leaves it increasingly vulnerable to setbacks if expectations prove difficult to meet.

A key tailwind for markets remains optimism about a potential agreement between the United States and Iran. Expectations that a framework deal could reopen the Strait of Hormuz and reduce regional tensions have contributed to lower oil prices over the past two months, easing inflation concerns and supporting risk assets. While negotiations appear to be progressing and investors generally expect a deal eventually, periodic flare-ups, including over the weekend, underscore that the path toward resolution remains uncertain and that geopolitical developments continue to be an important source of market volatility.

Economics

Recent economic data continue to point to an economy that is slowing modestly but remains fundamentally resilient. April Core PCE, the Federal Reserve’s preferred inflation measure, rose 0.24% month over month, slightly below expectations, though the annual rate remained elevated at 3.29%. Consumer spending increased 0.5%, but personal income was unchanged, causing the savings rate to fall to just 2.6% as households continue to spend faster than income is growing. At the same time, business investment remains a key source of support. Durable goods orders surged 7.8% in April, while capital spending continues to benefit from ongoing investment in technology, infrastructure, and artificial intelligence. Although first-quarter GDP was revised down to a 1.6% annualized pace, growth remains positive and appears consistent with a mid-cycle slowdown rather than a recession.

Consumer confidence data highlighted the increasingly bifurcated nature of the economy. While confidence exceeded expectations, consumers expressed growing concern about inflation, gasoline prices, and geopolitical risks, and more households indicated plans to reduce spending or delay major purchases. Nevertheless, actual spending behavior remains supported by a resilient labor market, rising equity prices, and accumulated wealth. The labor market continues to operate in a “low-hiring, low-firing” environment, with layoffs limited and jobless claims near historically low levels. With nearly half of U.S. households now owning corporate equities, rising portfolio values continue to support consumer confidence and spending. Taken together, strong business investment, healthy corporate balance sheets, and stable labor market conditions continue to provide an important cushion against slower growth and elevated inflation.

Policy

Federal Reserve commentary was notably hawkish last week as policymakers increasingly focused on the inflationary risks posed by geopolitical uncertainty, higher energy prices, and supply-chain disruptions. Minneapolis Fed President Neel Kashkari stated that it remains far too early to determine the Fed’s next move, arguing that inflation risks currently outweigh labor market concerns and suggesting that policy could move in either direction. Dallas Fed President Lorie Logan similarly emphasized the importance of restoring normal shipping flows through the Strait of Hormuz, warning that prolonged disruptions could have meaningful consequences for both inflation and economic growth.

Other officials echoed similar concerns. Governor Lisa Cook said inflation is moving in the wrong direction and indicated she would support higher rates if price pressures continue to build. At the same time, Chicago Fed President Austan Goolsbee cautioned that both AI-driven investment demand and energy-related supply shocks could add to inflationary pressures. Vice Chair Philip Jefferson struck a somewhat more balanced tone, arguing that current policy remains well-positioned and expressing confidence that inflation pressures tied to tariffs and energy costs should moderate over time. Even so, he acknowledged that inflation risks remain skewed to the upside. Reflecting the Fed’s increasingly cautious stance, Fed funds futures now assign a greater probability to a rate hike by year-end than a rate cut—a significant reversal from expectations earlier this year.

Conclusion

Markets begin June with a cautiously constructive backdrop. Strong corporate earnings, continued AI-related investment, and optimism surrounding a potential U.S.–Iran agreement continue to support risk appetite. At the same time, the underlying rally remains highly concentrated, and inflation remains stubbornly above target.

While oil prices and yields have declined meaningfully on expectations of diplomatic progress, volatility remains elevated, and the absence of a finalized agreement leaves room for renewed market turbulence. Investors are increasingly balancing resilient economic growth and strong earnings against persistent inflation pressures, lofty AI-related equity valuations, elevated geopolitical risks, and a Federal Reserve that appears more concerned about inflation than it did just a few months ago.

For now, the economy continues to resemble a mid-cycle slowdown rather than a recession. However, with policy flexibility narrowing and market leadership concentrated among a relatively small group of companies, maintaining diversification and a disciplined long-term perspective remains especially important as the year progresses.

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