Investing for the Right Tail: Asymmetric Wealth Creation Across Public and Private Markets

August 2026

Equity returns are not distributed evenly across companies.

Over long horizons, a small number of firms account for most of the wealth that the stock market creates, while the majority of companies produce returns that are modest, flat, or negative. Statisticians call this pattern positive skewness, and it carries a practical consequence. The return of a broad equity portfolio depends heavily on whether it holds the few companies that drive the aggregate result. In other words, a handful of investments are so successful they more than offset the weaker results of the rest.