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Pershing Square USA and 3 Other Ways to Invest Alongside Bill Ackman - Barron's

Reported by Barrons
May 1, 2026· 3 min read
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Key Takeaways
  • • Pershing Square Capital Management operates a highly concentrated portfolio of 7–10 core positions, with approximately 40% of assets invested in three dominant technology stocks, reflecting Ackman's deep-conviction, activist investment approach.
  • • Pershing Square U.S., a closed-end fund, completed a dual IPO structure announced on March 10th, enabling retail and institutional investors direct access to Ackman-managed positions without replicating the full hedge fund strategy.
  • • Uber Technologies represents the largest disclosed position in Pershing Square's current portfolio, exemplifying Ackman's focus on established businesses with strong competitive moats and operational improvement opportunities.
  • • Multiple investment vehicles now allow institutional and retail investors to track Ackman's strategy, including exchange-traded funds (ETFs) such as VistaShares Target 15™ ACKtivist and access to publicly listed Pershing Square Holdings on Amsterdam and London exchanges, eliminating the need for direct hedge fund access.
  • • Ackman's investment philosophy prioritizes avoiding excessive diversification, learning from past mistakes (including losses from short-selling positions), and maintaining long-term conviction despite short-term market volatility, with emphasis on value creation over trading gains.
Summary
Bill Ackman, founder and CEO of Pershing Square Capital Management, operates one of the most concentrated hedge fund portfolios in the alternative asset management space. Rather than pursuing broad diversification, Pershing Square typically maintains fewer than ten core positions, each backed by extensive research and high conviction. This concentrated approach reflects Ackman's philosophy that deep fundamental analysis and active engagement with management can drive superior long-term returns. The strategy combines elements of value investing, activist shareholder engagement, and operational improvement initiatives, positioning the fund to influence corporate strategy at portfolio companies.

The fund's current holdings remain heavily weighted toward technology and platform-based businesses. Approximately 40% of Pershing Square's assets are concentrated in three dominant tech titans, with Uber Technologies serving as the largest single position. This exposure reflects Ackman's conviction in businesses featuring strong competitive advantages, predictable cash flows, and identifiable operational improvement opportunities. The concentration strategy acknowledges that while volatility may increase in the short term, long-term value creation justifies taking meaningful positions in select opportunities rather than holding shallow exposure across numerous holdings.

Recognizing institutional and retail demand for access to his investment approach, Ackman announced plans in March for a dual IPO structure encompassing Pershing Square U.S., a closed-end fund, and Pershing Square Inc. This development democratizes access to Ackman-managed capital, enabling investors outside the traditional hedge fund structure to participate in his portfolio. Additionally, publicly listed Pershing Square Holdings trades on Amsterdam and London stock exchanges, providing an alternative path to exposure. Recent ETF launches, including VistaShares Target 15™ ACKtivist, further extend access by offering investors ETF-wrapped versions of Ackman-inspired strategies without requiring full portfolio replication.

Ackman's investment principles emphasize discipline and conviction over tactical positioning. His approach explicitly avoids excessive diversification, focuses on learning from historical mistakes—including significant losses from short-selling activities that the fund has since exited—and maintains conviction through short-term market turbulence and macroeconomic noise. This long-term orientation, combined with selective activism when portfolio companies face operational or strategic challenges, has defined Pershing Square's two-decade track record and continues to attract both institutional capital and retail investor interest seeking exposure to his methodology.

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Barrons Pershing Square USA and 3 Other Ways to Invest Alongside Bill Ackman - Barron's