What is a hedge fund?Medium

A fund with fewer restrictions and a performance fee. Not a strategy — a legal and fee structure that a dozen unrelated strategies happen to sit inside.

3 min read · 583 words

The short answer: a hedge fund is a pooled investment vehicle that is allowed to do things an ordinary fund is not — borrow, sell short, concentrate, use derivatives — sold to professional and wealthy investors rather than to the public, and charging a share of the profits as well as a management fee. It is a wrapper, not a strategy.

What actually makes it one

Permissions. An ordinary retail fund is bound by rules on diversification, leverage and liquidity. A hedge fund is not, and that latitude is the whole point of the structure.
Who may invest. Restricted to professional or qualifying investors, which is what buys the latitude: the rules being disapplied are consumer-protection rules.
The fee. A management fee plus a share of the profit, subject to a high-water mark so the same gain is not charged for twice.
The exit. Notice periods, lock-ups and gates — matched, in a well-run fund, to how quickly its holdings could actually be sold.

Note what is not on that list: hedging. The name is historical, from funds that held long and short positions together. Plenty of hedge funds hedge very little.

The strategies share nothing but the wrapper

This is the part most descriptions skip. These have almost nothing in common with each other:

Long/short equity — own some shares, short others.
Global macro — positions on rates, currencies and policy.
Relative value — two things that should be priced alike and are not.
Event-driven — mergers, restructurings, situations with a date attached.
Distressed — debt of companies in trouble.
Quantitative — rules executed systematically at scale.

Averaging their returns together produces a number describing no fund that exists. The product page and the industry group go further into each.

Gross and net exposure, which is where the risk hides

A fund can be net flat — as much short as long — and still carry enormous risk, because the two books need not move together. Gross exposure adds them; net subtracts them. A fund reporting low net exposure and high gross is making a bet on the relationship between two things rather than on the market direction, and the relationship can break.

Add borrowed money and the arithmetic gets unforgiving fast. Where the leverage hides is the page on that, and 1998 and 2021 are the two versions of the same lesson: the position was not the problem, the financing behind it was.

The two structural risks worth naming

Crowding. Many funds holding the same position entered at different times and leave on the same news. The entry is orderly and the exit is not.
The mismatch. A fund promising monthly exit from positions that take a quarter to sell will fail that promise exactly when it matters — the same fragility that makes a bank a bank, in a different wrapper. Can a fund stop me taking my money out is the page.

Who its counterparties are

A hedge fund does not stand alone: a prime broker provides the financing, the custody and the stock borrow that makes shorting possible, and it also sees the position. That relationship is where several of the failures above became visible, or failed to.

The one sentence to take away

"Hedge fund" describes a fee structure and a set of permissions rather than a way of investing, so the only useful questions are what this particular fund actually does, what it has borrowed to do it, and how quickly you could get out.