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13F institutionsOriginal research, free to cite

The biggest single bets in institutional investing

Which funds have put an extraordinary share of everything they manage into one company?

What we found

The most concentrated bet in our entire dataset puts nearly half of one fund's disclosed equity into a single holding. Several household-name investors have a quarter or more of everything they manage riding on one company.

We could not reach the database to compute this study just now. The figures below are therefore missing, rather than zero. We would rather show you an honest gap than a confident blank.

How we computed it
  • Each Q1 2026 position as a percentage of that fund's total reported 13F equity value.
  • Restricted to funds with over $5bn of 13F assets and positions over $500m, so this is genuine size and not a small fund with one holding.
What this CANNOT tell you
  • Some of these are structural rather than convictional. A holding company reporting its own stake, or a foundation holding a founder's donated shares, is not the same as a manager making an active bet.
  • 13F assets are not the fund's total assets. A manager with 40% of their EQUITY in one name may hold a great deal else that the filing never shows.
Citation

Free to quote, chart or republish with attribution. Cite as: SteadyShares, The biggest single bets in institutional investing, https://steadyshares.com/research/the-biggest-single-bets. If you are a journalist and want the underlying query or a different cut of the data, ask and we will run it.

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Educational information, not financial advice, and not a recommendation to buy or sell anything. A late regulatory filing is a paperwork failure and nothing more: we make no allegation of wrongdoing against any person named on this page.