美股IPO·2025-08-15 08:33Core Viewpoint - Billionaire Bill Ackman has made significant investments in Amazon and Alphabet, reflecting optimism about AI technology commercialization and a strategic shift towards tech giants [2][11]. Investment in Amazon - Ackman's Pershing Square Capital Management acquired over 5.8 million shares of Amazon, valued at approximately $1.28 billion, marking the first time the fund has invested in Amazon, making it the fourth largest holding in the portfolio [3][8]. - Amazon's stock has rebounded by 5.3% this year after previously dropping over 30% due to concerns over generative AI and U.S. tariff policies [3][10]. Investment in Alphabet - Ackman significantly increased his stake in Alphabet by adding 925,000 shares, a 20.84% increase, bringing the total value of his holdings in Alphabet to $945 million [6][10]. - This investment reflects a broader strategy to capitalize on AI-driven opportunities within established companies [11]. Strategic Shift - Ackman's recent moves indicate a shift towards larger tech companies with proven AI capabilities, contrasting with his divestment from companies like Canadian Pacific and Chipotle, which are still in the early stages of AI integration [12][13]. - The current portfolio includes 11 stocks, with the top five holdings being Uber Technologies, Brookfield Corp, Restaurant Brands International, Amazon, and Howard Hughes Holdings [14].