They sound like cousins, and structurally they are — but one fundamental choice, open-end vs. closed-end, sets them apart and drives nearly every other difference. Here is the comparison, in plain English.
By A. Bradley Randall, Founding Attorney · Published June 23, 2026 · Last updated June 25, 2026
“Hedge fund” and “private equity fund” are two of the most-searched terms in private funds — and two of the most frequently confused. Both pool capital from sophisticated investors, both are run by a manager who earns a fee plus a share of profits, and both are usually built on the same legal chassis: a Delaware limited partnership raising privately under the securities exemptions. So why are they treated as different worlds?
The answer comes down to a single structural choice with far-reaching consequences: a hedge fund is open-end, and a private equity fund is closed-end. Understand that one distinction and the rest — liquidity, fees, lock-ups, the manager's incentives, even the registration analysis — falls into place. This guide walks through it.
A hedge fund is open-end: it runs indefinitely, holds liquid assets, and lets investors come and go through subscriptions and redemptions. A private equity fund is closed-end: investors commit capital up front, it is called and invested over a fixed life, and money comes back only as investments are sold. Almost every other difference flows from this one.
Start with what they share, because it is more than people expect. Both a hedge fund and a private equity fund are typically:
In other words, the legal building blocks are largely the same. What differs is how capital moves through the structure — and that is the engine, not the chassis.
A hedge fund is open-end. It has no fixed end date. Because it trades liquid or reasonably liquid assets — equities, debt, currencies, derivatives — it can value itself regularly and let investors move in and out. Investors subscribe (buy in) on a periodic basis and redeem (cash out) on set terms, subject to mechanics like lock-ups, notice periods, and gates that give the manager stable capital to run the strategy.
A private equity fund is closed-end. Investors make a binding capital commitment up front, and the manager calls that capital over time as it makes investments. The fund has a defined life — commonly around ten years — split into an investment period and a harvest period. There is no redemption right: because the fund holds illiquid companies that cannot be sold on demand, capital comes back only as those companies are sold, through distributions.
That difference is not a technicality. It dictates what each fund can invest in, how investors experience their money, how the manager is paid, and how the fund is run day to day.
Both funds typically charge a management fee plus a performance share, but the performance piece is calculated in fundamentally different ways — again because of open-end vs. closed-end.
A hedge fund uses a performance fee subject to a high-water mark. Because the fund is ongoing and valued regularly, the manager earns the performance fee only on net new profits — gains above the highest value an investment has previously reached. If the fund drops and recovers, investors pay no performance fee on the way back up to the old peak, only on gains beyond it. They never pay twice for the same ground.
A private equity fund uses carried interest paid through a distribution waterfall. Because capital is returned over the fund's life as deals are realized, profits flow through an ordered sequence: first return of capital to investors, then a preferred return (a hurdle, often around 8%), then a GP catch-up, then the carried-interest split (commonly 80/20). Investors also experience the J-curve: net returns are negative early, as capital is called and fees charged, and turn positive later as investments are sold.
(For a deeper walk through the waterfall, the catch-up, and a dollar-by-dollar worked example, see our guide to carried interest, hurdle rates & the distribution waterfall.)
Here is the comparison across the dimensions that matter most:
| Dimension | Hedge fund | Private equity fund |
|---|---|---|
| Structure | Open-end — ongoing, no fixed end date | Closed-end — fixed life (often ~10 years) |
| Assets | Liquid / reasonably liquid (stocks, debt, derivatives) | Illiquid (whole companies, controlling stakes) |
| How capital comes in | Subscriptions, periodically | Commitments drawn down via capital calls |
| How investors exit | Redemptions (with lock-ups, notice, gates) | No redemptions — distributions as deals are sold |
| Liquidity for investors | Periodic, subject to terms | Locked up for the fund's life |
| Performance pay | Performance fee with a high-water mark | Carried interest through a distribution waterfall |
| Return pattern | Marked to market continuously | The J-curve — negative early, positive late |
| Typical legal form | Delaware LP | Delaware LP |
| Offering & fund exemptions | Reg D (506(b)/(c)) + 3(c)(1) or 3(c)(7) | Reg D (506(b)/(c)) + 3(c)(1) or 3(c)(7) |
| Adviser registration wrinkle | CFTC (Commodity Futures Trading Commission)/NFA (National Futures Association) registration (as a CPO or CTA) if it trades commodity interests | No VC-style exemption — must generally register under the Advisers Act once past $150 million in AUM (the private fund adviser exemption may apply below that threshold) |
If your strategy trades liquid markets continuously and your investors want to move in and out, you are building a hedge fund. If your strategy buys and holds illiquid assets over years and your investors can lock up capital, you are building a private equity (or venture, or real estate) fund. The liquidity of what you invest in tends to dictate the structure.
One useful clarification: “private equity fund” in the strict sense means buyout funds, but the closed-end structure it represents is shared by venture capital funds and most real estate funds too. They all commit and call capital, run for a defined life, and pay out through a waterfall. So the real divide is less “hedge vs. PE” than open-end vs. closed-end — with hedge funds on one side and venture, private equity, and real estate funds on the other. Within the closed-end world, the differences come down to what the fund buys: young companies (venture), mature companies (private equity), or property (real estate).
For a founder, the choice is rarely a free decision — it follows from the strategy. A liquid-markets trading strategy needs the open-end hedge fund structure; a buy-and-hold strategy in private companies or property needs the closed-end structure. Trying to force one into the other — offering hedge-fund liquidity on illiquid assets, say — is a classic and dangerous structuring error. The right structure is the one that matches the liquidity of what you actually invest in, and the expectations of the investors you actually have.
The core difference is open-end vs. closed-end. A hedge fund is open-end: it runs indefinitely, holds liquid assets, and lets investors subscribe and redeem over time. A private equity fund is closed-end: investors commit capital up front, the manager calls and invests it over a defined fund life, and capital is returned as illiquid investments are sold. That single difference drives most of the others.
A hedge fund is open-end. It has no fixed end date, generally holds liquid assets, and allows investors to subscribe and redeem on set terms over time, subject to lock-ups, notice periods, and gates. A private equity fund is closed-end, with a fixed life and no redemption right.
Both commonly use a “2 and 20” structure, but the performance piece differs. A hedge fund's performance fee is typically subject to a high-water mark, so investors only pay on net new profits above their prior peak. A private equity fund's carried interest is paid through a distribution waterfall (return of capital, preferred return, GP catch-up, then the carried split) as investments are realized.
Both are usually Delaware limited partnerships with a GP and a management company, and both raise under Regulation D while relying on Section 3(c)(1) or 3(c)(7). The legal building blocks are the same; what differs is the capital mechanics (subscriptions/redemptions vs. commitments/capital calls) and the documents' emphasis.
A hedge fund offers far more liquidity. Because it holds liquid assets, investors can generally redeem periodically (subject to lock-ups, notice periods, and gates). A private equity fund is illiquid by design: capital is locked up for the fund's life, and money comes back only as the underlying companies are sold.
The adviser-registration analysis can differ. Both may rely on the private fund adviser exemption below an assets threshold. Venture advisers have a dedicated exemption, but there is no equivalent for buyout-style private equity, so PE managers typically must register once past the threshold. Hedge fund managers trading futures, swaps, or other commodity interests may also face CFTC/NFA (CPO/CTA) registration. The specifics are fact-dependent and require counsel.
This article is educational and general in nature and is current only as of its publication date. Fund structures, terms, and the rules that govern them vary by fund and change over time; the comparisons here are simplified to illustrate the general differences, not to recommend any particular structure. Nothing here is legal, tax, or investment advice, should be relied upon in making structuring or compliance decisions, or creates an attorney–client relationship. Consult qualified counsel about your situation.
Open-end or closed-end, hedge or private equity — the right structure follows from your strategy and your investors. Let's figure out which one fits, and build it properly.
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