A hedge fund is a private pooled investment fund that uses a strategy set out in its governing documents. It can invest across different markets and employ techniques such as short selling, derivatives or leverage, depending on its mandate.
It is a type of investment vehicle, rather than a single strategy. The name does not mean that every position is hedged or that investors cannot lose money.

Who invests and who manages it?
The SEC’s investor education describes hedge funds as generally limited to individuals and institutions meeting financial or sophistication criteria. Required eligibility depends on the structure and offering.
A separate adviser typically manages investments for the fund. The fund, its manager and the portfolio it holds should not be treated as the same legal or financial entity.
Are hedge funds unregulated?
No. US private funds can rely on exclusions from investment-company registration, giving them a different framework from registered mutual funds. That does not remove all oversight.
The SEC explains that many private-fund advisers must register with it or state authorities, while narrower exemptions apply to others. Registered advisers have applicable conduct, disclosure and compliance obligations.
Form PF guidance describes reporting by qualifying private-fund advisers. Some information is confidential to regulators rather than publicly available to every investor. Adviser registration is not an endorsement of a fund’s strategy or returns.
What kinds of strategies do they use?
A fund may combine long positions, which can benefit from rising prices, with short positions, which can benefit from falling prices. Derivatives create contractual exposures, while leverage increases exposure using borrowing or other arrangements.
Event-driven strategies focus on developments such as mergers or restructurings. These approaches are not exclusive to hedge funds: a September 2026 registered arbitrage-fund prospectus describes merger strategies and the possibility that deals fail or close on worse terms.

In the fictional example, the purchase price is $48. A completed $50 cash takeover produces a $2 gross gain per share, or about 4.17%. If the deal fails and the share is sold for $40, the loss is $8, or about 16.67%. Neither outcome is an annualized return.
How do fees and withdrawals work?
Terms can include management fees, performance fees, lock-up periods, limited redemption dates and restrictions during stress. They are contractual features, not one universal industry schedule.
Assets under management measure investment assets managed at a point in time. They are not the adviser’s fee revenue or profit. A fund-size ranking therefore cannot be relabeled a revenue ranking.
Portfolio losses, leverage, counterparties, valuation uncertainty and restricted withdrawals can affect results. The legal structure and actual strategy explain the exposure more clearly than the hedge-fund label alone.
Last checked and updated on November 3, 2026 by the MBN editorial team.