Billionaire Bill Ackman Has 21% of His Hedge Fund's $13.7 Billion Portfolio Invested in Just 1 Stock

Bill Ackman's Pershing Square Capital Management holds a substantial 21% of its fund in Uber Technologies (UBER), driven by the company's powerful network effect, dominant market position, and scalable business model. Uber has successfully transitioned to profitability, reporting $1.5 billion in Q2 operating income, an 82% year-over-year increase, with management forecasting high 30s-40% adjusted EBITDA compound annual growth through 2027. Despite a 57% stock surge in 2025, its forward P/E of 23.2 is considered reasonably priced relative to the S&P 500, supporting Ackman's investment thesis on high-quality growth companies.

Analysis

Bill Ackman's Pershing Square Capital Management has allocated a substantial 21% of its $13.7 billion hedge fund to Uber Technologies (UBER), reflecting a high-conviction bet on the company's "high-quality" attributes. This significant positioning is underpinned by Uber's powerful network effect, which aggregates fragmented supply and demand, and its dominant competitive stance, even attracting major restaurant chains to its platform.

Uber has successfully transitioned into a profitable entity, reporting $1.5 billion in operating income for Q2, an 82% year-over-year increase from a prior loss. This profitability is attributed to CEO Dara Khosrowshahi's efficiency initiatives and Uber's scalable business model, which generates high margins per additional transaction. Management forecasts an adjusted EBITDA compound annual growth rate in the high 30s to 40% between 2024 and 2027, a target Pershing Square views as realistic.

Despite a 57% stock surge in 2025, Uber's shares are still considered reasonably priced, trading at a forward price-to-earnings ratio of 23.2, which is barely more expensive than the S&P 500 index. This valuation, combined with double-digit annual revenue growth potential driven by 180 million monthly active users, suggests continued upside. The "extremely positive" sentiment and "bullish" tone from the signals reinforce this outlook.

Key Decisions for Investors

• Investors should consider Uber's strong fundamental shift to profitability and its robust growth outlook, aligning with a long-term investment thesis
• Evaluate the current valuation, noting its forward P/E of 23.2 is comparable to the S&P 500 despite significant recent share price appreciation
• Monitor future earnings reports and management's progress towards the projected high 30s-40% adjusted EBITDA CAGR through 2027 for sustained performance indicators