AI crowding in U.S. markets leaves investors exposed if demand slows: Moneta

• AI demand is highly concentrated in a few top US tech stocks, with 40% of S&P 500 in the top 10, and 19% in just four stocks.
• The US economy is increasingly viewed as an 'AI play,' but concerns exist about the durability of this concentrated demand.
• Big tech companies may need to issue debt and equity to fund AI infrastructure, benefiting financial sectors and potentially driving market rotation.
• Diversification into mid-cap companies and global markets is recommended, as AI innovation is expected to spread beyond current leaders and the US.
• Investors should be wary of betting against the US in scale, especially for US-centric portfolios, despite the need for global diversification.

The analyst warns about the high concentration of AI demand in a few top US tech stocks, raising concerns about market durability if this 'vertical wall of demand' slows. She suggests investors consider diversification into adjacent trades, mid-cap companies, and global markets, while acknowledging the US's current dominance in AI innovation.