Concentration makes way for dispersion

For much of the past decade, outperforming often meant owning more of the benchmark’s largest companies. A small group of mega‑cap, asset‑light platforms dominated equity returns, making active investors compete against a concentrated index. That dynamic is shifting as AI changes the economics of the market’s largest companies and broadens the opportunity set beyond the winners of the last cycle.

The post‑global financial crisis era rewarded duration, scale, and asset‑light models. Capital flowed to companies capable of delivering durable earnings growth with limited capital intensity. The post‑COVID world is different. Higher nominal growth, stickier inflation, higher rates, and the build‑out of AI infrastructure are rewarding businesses tied to infrastructure, industry, and capital investment.

The economics of the prior leaders are changing, too. Hyperscalers collectively are being pulled from asset‑light compounding into a capital‑intensive investment race. They may have little choice but to spend aggressively to defend their positions, but that spending can pressure free cash flow and alter return profiles.

The great rotation

(Fig. 1) Returns may shift toward infrastructure providers

^{As of May 31, 2026.
Analysis by T. Rowe Price. For illustrative purposes only. Actual outcomes may differ materially.}

For investors, the implications are significant. Index exposure remains highly concentrated even as the economics of the largest benchmark constituents become more complex. At the same time, leadership is broadening across sectors and geographies, widening the gap between companies that can turn higher investment into stronger returns on capital and those that cannot. Many beneficiaries of this cycle are also seeing improving relative growth, contributing to shifts in valuations and helping explain the recent underperformance of traditional quality and durable growth.

This creates a more challenging benchmark environment, but also a richer opportunity set for active investors who can distinguish between capex that could enhance returns and spending that dilutes them. It is more than a market rotation—it is a shift from concentration to dispersion. In the next phase, returns are likely to depend less on index exposure and more on identifying where capital intensity is creating better economics—not eroding them.

Investment implications

• Market leadership is broadening beyond a narrow group of mega‑cap technology companies, creating a more attractive environment for active security selection.
• As AI investment is likely to change corporate return profiles, companies converting capital spending into durable earnings growth may be better positioned than those facing weaker free cash flow.