As 2026 enters its second half, major investment firms are recommending investors balance AI infrastructure exposure with diversified holdings across broader market segments, a shift that reflects evolving opportunities beyond mega-cap technology stocks. Morgan Stanley’s May 2026 midyear outlook highlighted AI infrastructure investment as a key driver boosting the outlook for risk assets, particularly U.S. equities, while Goldman Sachs projects $765 billion in annual AI capital expenditure in 2026, growing to $1.6 trillion by 2031.
The scale of AI-related investment is reshaping market dynamics. According to Goldman Sachs’ May analysis, the baseline model implies $765 billion in annual AI CapEx in 2026, with the investment representing roughly 1.5% of U.S. GDP—a proportion comparable to historic infrastructure booms. This sustained capital deployment supports earnings growth across technology and related sectors, making AI infrastructure a central theme for investors seeking exposure to secular growth trends.
Broadening Market Leadership Beyond Mega-Cap Tech
While AI infrastructure investment remains robust, investment outlooks from mid-2026 emphasize that market leadership has broadened significantly. T. Rowe Price’s midyear outlook notes that equity market leadership broadened beyond mega-cap tech, with small-caps showing particular strength and diversification extending into critical minerals production and supporting industries. MFS Investment Management similarly recommends diversifying within U.S. equities beyond mega-caps into small and mid-cap (SMID) and value-oriented stocks, while Wells Fargo notes that AI-related technologies and infrastructure will extend well beyond public mega-cap firms to include significant private and smaller-cap companies.
This diversification reflects a maturing investment cycle. Lord Abbett’s June 2026 midyear outlook states that market fundamentals remain supportive, with earnings strength broadening beyond mega-cap technology. Capital Group’s second-half outlook emphasizes looking beyond U.S. equities for opportunity, particularly into non-U.S. developed markets and emerging markets benefiting from AI hardware demand. The broadening of gains across asset classes and geographies reinforces the case for balanced portfolio positioning rather than concentrated mega-cap exposure.
Investors navigating the 2026 landscape face a dual opportunity: capturing AI infrastructure’s structural growth while maintaining exposure to the widening circle of beneficiaries. The convergence of massive capital deployment and diversifying market leadership suggests that 2026’s second half will reward disciplined, broad-based investment approaches.
Sources
- Morgan Stanley — 2026 Midyear Investment Outlook (May 15, 2026) confirming AI infrastructure investment boosting outlook for risk assets and U.S. equities
- Goldman Sachs — The Assumptions Shaping the Scale of the AI Build-Out (May 1, 2026) projecting $765 billion in annual AI CapEx in 2026, growing to $1.6 trillion by 2031
- T. Rowe Price — 2026 Midyear Market Outlook noting equity leadership broadening beyond mega-cap tech into small-caps and diversification
- MFS Investment Management — 2026 Midyear Key Themes (June 2026) recommending diversification into SMID-cap and value-oriented stocks
- Wells Fargo — 2026 Midyear Outlook (June 16, 2026) noting AI-related buildout extending beyond public mega-cap tech firms
- Lord Abbett — 2026 Midyear Investment Outlook (June 4, 2026) highlighting earnings strength broadening beyond mega-cap technology
- Capital Group — Stock Market Outlook: 3 Themes for the Second Half of 2026 (June 4, 2026) emphasizing looking beyond U.S. equities
