For three straight years, from 2023 through 2025, equity markets were dominated by a small group of technology leaders known as the Magnificent 7. These seven companies accounted for roughly half of the S&P 500’s total appreciation during that period. While the broader market delivered solid returns, the performance gap was unmistakable. Many diversified portfolios felt like they were perpetually playing catch-up as gains became increasingly concentrated in just a handful of names.
The outperformance was rooted in powerful fundamentals. The Magnificent 7 generated exceptionally strong free cash flows. This allowed them to invest aggressively in artificial intelligence infrastructure – data centers, advanced chips, cloud computing, and next-generation software platforms – while keeping balance sheets healthy and debt levels low. The result was a self-reinforcing cycle: innovation drove revenue and earnings growth, which generated even more capital for further expansion. Scale, network effects, strong pricing power, disciplined cost management, and impressive productivity gains enabled consistent earnings beats even in a higher-rate environment. Investors rewarded this combination of durable growth, high profitability, and resilience, pushing valuations higher and cementing their leadership.
That era of narrow leadership began to ease as interest rates declined. Federal Reserve rate cuts in 2024 and 2025 lowered borrowing costs and made capital more accessible across the economy. Smaller U.S. companies, which had been more sensitive to elevated rates, finally gained room to breathe. International markets also staged a meaningful recovery.
The shift was especially evident in 2025. For the first time in more than a decade, international equities broadly outperformed U.S. stocks. Contributing factors included growing AI enthusiasm across Asia, a weaker U.S. dollar (down about 9 percent), and strong performance in Europe, Canada, Mexico, and the United Kingdom.
Even within the U.S. market, the first quarter of 2025 brought a sharp reminder that leadership can rotate quickly. The Magnificent 7 experienced a notable pullback, with several names posting double-digit declines. Following Q1 2025, these stocks recovered and resumed their leadership until October 2025, when we saw another rotation. It remains to be seen whether Mag 7 resumes leadership or we see a new theme emerge.
Bringing in more asset classes and looking at their returns at a high level, The Callan Institute’s Periodic Table of Investment Returns provides a clear visual reminder of how leadership rotates across asset classes, market caps, and geographies over time.
While this chart may appear random and confusing, the broad market participation in investment gains over time is a constructive development. When gains spread across smaller companies, different regions, and non-stock asset classes like real estate, portfolios tend to experience smoother performance and less frustration during periods when any single segment pauses. Broader participation reduces fragility and creates a more stable foundation for long-term investing.
At the same time, we avoid overdiversification, which can dilute returns. It is our perspective that the United States continues to offer the world’s most dynamic business environment – deep capital markets, a culture of entrepreneurship, strong legal institutions, and policies that encourage innovation and growth. These structural advantages have historically produced superior compounded returns for U.S. equities over full market cycles, even after periods when other regions shine.
We therefore caution against overdiversification. Chasing every short-term leadership rotation risks diluting returns and filling a portfolio with merely average holdings rather than focused, high-conviction positions. Temporary periods of consolidation and catch-up are a normal and healthy part of market cycles. They help prevent excesses, maintain efficient market functioning, and do not diminish the United States’ long-term structural advantages. During these phases, we carefully evaluate the ongoing technical and fundamental trends in relation to the long-term performance of trending asset classes before committing to more permanent allocations.
The move from narrow Magnificent 7 leadership to broader participation reflects a maturing market cycle, supported by declining rates and opportunities spreading more widely. Expect continued rotations ahead: periods when smaller firms and international markets take the lead, followed by stretches when U.S. innovation reasserts itself. We welcome the improved breadth because it makes portfolios more resilient and allows diversification to deliver on its intended benefits. By balancing conviction with discipline, and avoiding the trap of overdiversification, one can navigate changing market and economic themes with greater confidence.
