As the 2026 market landscape takes shape, artificial intelligence (AI) continues to serve as the primary catalyst for global equity performance.
According to BlackRock’s 2026 outlook, AI remains the “dominant theme” for the investment community, fueling a capital-intensive expansion that is fundamentally supporting corporate earnings and broader macroeconomic growth.
Massive capital expenditures directed toward the physical backbone of the digital economy reflect the scale of this expansion. According to the BlackRock report, data center construction alone commanded more than $500 billion in 2025.
Looking toward the end of the decade, BlackRock analysts project that total AI infrastructure spending will reach between $5 trillion and $8 trillion by 2030. This suggests that the current buildout is in its early stages, providing a long runway for growth in the quarters ahead.
Managing AI Concentration Risk in Portfolios
However, the dominance of this theme has created a secondary effect on market structure that financial advisors must carefully monitor. The BlackRock report highlights that U.S. equity indexes have reached new all-time highs while simultaneously becoming significantly more concentrated. Currently, the 10 largest companies in the S&P 500 account for over 40% of the index’s total market capitalization. This concentration increases the risk of high correlations, where a pull-back in a few mega-cap names could disproportionately impact broad-market portfolios.
The BlackRock report predicts that these risks will drive demand for “tailored and targeted diversification,” fueling fund flows throughout 2026. Investors are increasingly seeking ways to capture AI-driven growth without over-relying on the largest market-cap weights. This shift is likely to benefit thematic ETFs that focus on the broader AI ecosystem, including power generation, specialized semiconductors, and software integrators.
Furthermore, there are many AI ETFs available to investors. Offerings include the iShares Global Tech ETF (IXN), the Global X Artificial Intelligence & Technology ETF (AIQ), the Invesco AI and Next Gen Software ETF (IGPT), and the WisdomTree Artificial Intelligence and Innovation Fund (WTAI).
For advisors, the current challenge is balancing the undeniable growth of the AI infrastructure cycle with the structural risks of a top-heavy market. The BlackRock report suggests that 2026 will be defined by a more discerning approach to indexing, as investors seek to decouple from index concentration while remaining tethered to the AI growth engine.
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