Core Insights - Bill Ackman, a billionaire investor, is known for his aggressive investment strategy, particularly in a limited number of companies, achieving significant profits from stocks like Chipotle and Alphabet [1] - Currently, Uber is a key focus for Ackman, who holds a substantial position in the company, making it the largest holding in his portfolio despite a slight reduction in Q3 [2][4] Company Performance - Uber generated nearly $38 billion in revenue in the first nine months of 2025, marking an 18% increase year-over-year, with mobility revenue also rising by 18% and delivery revenue increasing by 24% [6] - The company managed to limit cost growth to 13%, resulting in a net income of approximately $9.8 billion for the same period, a significant increase from $3.0 billion in 2024 [7] - A one-time income tax benefit of $4.3 billion contributed to the profit increase, but even without this, Uber's profits showed substantial growth [8] Stock Valuation - Uber's stock has appreciated nearly 40% over the past year, despite recent market sell-offs [8] - The current market capitalization of Uber is $174 billion, with a P/E ratio of 11 and a forward P/E of 13, indicating a potentially undervalued stock [9][10] - The forward one-year P/E ratio stands at 20, suggesting that Uber stock may be an underappreciated value, similar to Ackman's previous successful investments [10] Investment Considerations - While Ackman's investment in Uber may not be a direct buy signal for all investors, the company's strong market position in mobility and delivery, along with the potential for autonomous driving revenue, presents a compelling case for investment [5][11] - The low valuation of Uber is likely a significant factor in Ackman's interest, indicating that it may still be an opportune time for long-term investors to consider the stock [12]