Mr. Cartwright discussed artificial intelligence as a sector to invest in.
Introduction
AI investing has shifted from early enthusiasm to a deeper look at economics, capital intensity, and returns. Demand for AI remains strong, and capital investment by AI companies is accelerating—investment in data centres alone could reach $4.5–5 trillion over the next five years. However, power availability, access to the power grid and construction timelines are becoming critical limiting factors. AI has entered an industrial phase. Investment success now depends less on exposure to the theme of AI and more on execution — specifically, which AI companies can deploy capital efficiently, secure scarce inputs, sustainably finance growth, and turn investments into sustainable profits.
Investment aspects
Despite high spending by AI companies, the returns are not yet uniform. Productivity gains occur gradually, and outcomes increasingly depend on data quality, operational capacity, balance sheet strength, and pricing power. As with previous waves of technology, high investment does not guarantee high profitability. The winners are those who can generate returns above their cost of capital.
AI is also expanding across industries, reaching beyond software and semiconductors to energy, utilities, data centres, capital goods, materials, and real-world assets. This creates a diversification problem: portfolios can appear to be sector diversified while still being highly exposed to the same underlying AI infrastructure.
Investing in AI for pension fund portfolios
You can't just look at the sector level. Look at the spread within the tech sector. Software and IT services are feeling the effects of changing expectations and adaptations to growth profiles. The investment implication is that selectivity matters. The next phase of AI investing will be to focus on companies that manage constraints, maintain financial flexibility, maintain earnings stability, and demonstrate clear returns on capital. For portfolios, this argues for measured, diversified exposure across the AI value chain, with an emphasis on valuation discipline, resilience and long-term cash flow generation, rather than broad thematic exposure.
Conclusion
• AI remains a powerful long-term structural force;
• The debate has shifted from possibility to profitability;
• Execution, capital discipline and economic exposure determine who ultimately reaps the revenues.