Bill Ackman Invests Billions in Tech Stocks During AI Surge

Bill Ackman's Strategic Shift Toward Big Tech

Bill Ackman, the billionaire hedge fund manager behind Pershing Square Capital Management, has continued to shift his portfolio further toward the "Magnificent Seven" stocks. According to the firm’s latest 13F filing with the SEC, Pershing made a new billion-dollar buy and expanded its stake in another major holding during the second quarter. These moves reflect a growing focus on artificial intelligence and the companies leading the charge in this technological revolution.

The "Magnificent Seven" stocks include:

• Apple (AAPL)
• Microsoft (MSFT)
• Amazon (AMZN)
• Alphabet (GOOGL/GOOG)
• Nvidia (NVDA)
• Meta (META)
• Tesla (TSLA)

These stocks have been significant drivers of market momentum in recent years. Hedge funds have increasingly turned to them as safe havens and growth engines, especially as AI adoption accelerates across various industries.

Who is Bill Ackman?

Bill Ackman is a well-known hedge fund manager and founder of Pershing Square Capital Management, which manages $13.7 billion in assets under management, according to its August 2025 13F filing with the SEC. Ackman's investment strategy involves making large, concentrated bets on companies he believes are undervalued relative to their potential. His approach typically focuses on long-term value creation.

As of June 30, Ackman owned only 11 publicly traded stocks in his portfolio. His success as a hedge fund manager has translated into a net worth of $8.25 billion, placing him at 420th on Bloomberg's Billionaires Index.

Ackman's Increased Focus on the Magnificent Seven

Ackman has now significantly increased his exposure to the Magnificent Seven stocks. His 13F filing reveals that over 24% of Pershing Square's portfolio is concentrated in two mega-cap giants: Amazon (AMZN) and Alphabet (GOOGL). This move highlights his growing confidence in these companies as key players in the AI-driven future.

A New Billion-Dollar Investment in Amazon

One of the most notable moves by Ackman was the purchase of 5.82 million shares of Amazon, valued at more than $1.3 billion. The e-commerce and cloud giant now ranks as Pershing's fourth-largest holding, representing about 9.3% of the fund's portfolio.

Amazon's latest quarterly results demonstrated why Ackman may see long-term value in the company. The company exceeded Wall Street estimates on both revenue and earnings, although shares dipped after some analysts were disappointed by slower-than-expected growth in its Amazon Web Services (AWS) unit. However, Amazon's management emphasized that heavy investments in AI-related infrastructure should yield long-term benefits as demand for AI continues to rise.

Doubling Down on Alphabet

Pershing Square also increased its position in Alphabet's Class A shares by 21% during the quarter. Combined with its existing holdings in Alphabet's Class C shares, the parent company of Google now represents Pershing's third-largest investment. This increased exposure underscores Ackman's belief in Google's scale, cash flow, and leadership in AI, despite competition from other tech giants like Microsoft and OpenAI.

Broader Trends in the Hedge Fund World

Ackman's bets align with a broader trend among hedge funds, which are increasingly focusing on the Magnificent Seven stocks driving market performance in the AI era. For Pershing Square, Amazon and Alphabet together now account for nearly a quarter of its total portfolio, signaling strong confidence in Big Tech's enduring influence, particularly as AI reshapes industries from retail and logistics to search and advertising.

Ackman's AI-Driven Strategy

Ackman has never shied away from bold, concentrated bets, and his latest moves suggest he sees the AI wave as a long-term structural trend rather than a passing hype cycle. By targeting Amazon's cloud-driven growth and Alphabet's dominance in digital advertising and search, he appears to be positioning Pershing to benefit from two of the most important technology trends of the next decade.

While risks remain, including regulatory scrutiny and intensifying competition, Pershing's Q2 activity reinforces the view that Ackman believes the Magnificent Seven are not just market leaders, but foundational to the future of global technology.