2 Top AI Stocks Prominent Billionaires Are Buying

Billionaire investors made notable Q2 tech moves, with Stanley Druckenmiller's Duquesne Family Office initiating a new Microsoft position, citing accelerating Azure cloud growth (39% YoY) and strong AI demand, while exiting Amazon. Conversely, Bill Ackman's Pershing Square acquired a $1.3 billion Amazon stake, driven by its best e-commerce growth in three years (12% total sales) and significant operating profit gains, even as AWS growth trails competitors. These contrasting high-conviction bets underscore divergent strategies on AI infrastructure leadership and e-commerce recovery plays among top funds.

Analysis

Second-quarter 13F filings reveal a strategic divergence among prominent billionaire investors regarding big tech's AI and cloud leadership. Stanley Druckenmiller's Duquesne Family Office established a new position in Microsoft, influenced by the acceleration of Azure's cloud revenue growth to 39% year-over-year, up from 33% in the previous quarter. This move, which coincided with the firm exiting its Amazon stake, signals a strong conviction that the market is underestimating AI-driven infrastructure demand, a sentiment supported by Microsoft's doubling of capital expenditures to $64 billion over two years. Conversely, Bill Ackman's Pershing Square initiated a substantial $1.3 billion stake in Amazon, focusing on a different set of catalysts. Ackman's high-conviction bet is predicated on the recovery of Amazon's e-commerce business, which posted its best growth in three years with a 10% increase in online store sales, and a dramatic 471% rise in operating profit since 2022. This investment proceeds despite Amazon Web Services (AWS) growing at 17% YoY, roughly half the pace of its primary competitors, suggesting Ackman sees value in the retail margin improvement story and long-term AWS potential, even if it concedes market share leadership in the near term. Both stocks carry high forward P/E valuations—32 for Microsoft and 34 for Amazon—underscoring the high growth expectations embedded in their current prices.

Key Decisions for Investors

• Investors prioritizing direct exposure to accelerating AI-driven cloud demand should consider Microsoft, which is capitalizing on Azure's 39% YoY growth, but must be comfortable with its premium forward P/E ratio of 32.
• For a thesis centered on e-commerce recovery and significant margin expansion, Amazon presents a compelling case, supported by its 10% online store growth and operational efficiency gains, despite AWS's slower near-term growth.
• Closely monitor the relative revenue growth rates of Azure and AWS in subsequent quarters, as this key performance indicator is the central divergence point in the investment theses of these major funds.
• Given that both companies trade at high forward P/E multiples, investors should critically weigh the strong growth narratives against the elevated valuation risk and the market's high expectations for future earnings delivery.