A long-short fund is a pooled investment that buys stocks the manager expects to rise and simultaneously sells borrowed shares of stocks the manager expects to fall, aiming to profit from the gap between the two groups whether the broader market is up or down. That dual structure is the point, and it’s also the source of every cost, tax quirk, and risk that sets these funds apart from a traditional stock fund.
How the Long and Short Sides Work Together
The long side is ordinary: the fund buys shares it thinks are undervalued and waits. The short side is the mirror. The fund borrows shares of a stock it considers overvalued, sells them immediately, and later buys them back, hoping to pocket the difference. If the buyback price is lower than the sale price, the short position made money.
What matters is the two sides relative to each other. If the longs outperform the shorts, the fund makes money even if every stock in the portfolio went up, or every stock went down. Managers call that differential return alpha, and it’s meant to reflect stock-picking skill stripped of general market direction.
Two exposure numbers describe what the fund is actually doing. Gross exposure is the total size of all positions combined: a fund with $150 million long and $100 million short has $250 million of gross exposure. Net exposure is the difference between the two sides, which in that example works out to roughly 33% net long. A fund targeting zero net exposure is trying to strip out market direction entirely and live or die by security selection.
Net exposure is the lever that distinguishes one long-short fund from another. A fund running 80% net long behaves a lot like a regular stock fund with a small hedge. A fund fluctuating between 20% and negative 10% is making a fundamentally different bet.
Hedge Fund or Liquid Alternative
Long-short strategies reach investors through two very different wrappers, and the wrapper affects fees, access to your money, and how much leverage the manager can use.
Private Hedge Funds
The classic vehicle is a private hedge fund, structured as a limited partnership and offered through a private placement exempt from SEC registration under Regulation D of the Securities Act of 1933.1U.S. Securities and Exchange Commission. Private Placements – Rule 506(b) Most hedge funds also rely on Section 3(c)(1) or Section 3(c)(7) of the Investment Company Act to avoid registering as an investment company. A 3(c)(1) fund can accept up to 100 investors; a 3(c)(7) fund has no investor cap but requires every investor to be a qualified purchaser.2Office of the Law Revision Counsel. 15 US Code 80a-3 – Definition of Investment Company
Under Rule 506(b), a fund can accept up to 35 non-accredited investors alongside unlimited accredited ones, though non-accredited participants must be financially sophisticated enough to evaluate the investment.1U.S. Securities and Exchange Commission. Private Placements – Rule 506(b) In practice, minimums of $250,000 to $1 million or more limit participation to wealthier investors regardless of what the regulation allows.
An accredited investor qualifies by earning more than $200,000 individually (or $300,000 jointly) in each of the prior two years with reasonable expectation of the same going forward, or by holding a net worth above $1 million excluding the primary residence.3U.S. Securities and Exchange Commission. Accredited Investors A qualified purchaser faces a much higher bar: at least $5 million in investments for an individual.4Legal Information Institute. Definition: Qualified Purchaser
Hedge funds historically charged “two and twenty,” a 2% annual management fee plus 20% of profits. That model has eroded. Industry averages have drifted closer to a 1.4% management fee and a 16% to 17% performance allocation, though top managers still command premium terms. Performance fees typically include a high water mark, so the manager only collects the incentive on gains above the fund’s previous peak. Lose 15% one year and gain 10% the next, and no performance fee is due because the fund hasn’t yet recovered its prior high.
Liquidity is the other trade-off. Hedge funds commonly impose lock-up periods of one to two years during which you cannot withdraw. Even after the lock-up, redemptions often require 30 to 90 days of notice, and many funds reserve the right to impose gates that limit total quarterly withdrawals.
Liquid Alternative Funds
The second option is a liquid alternative fund, packaged as a mutual fund or ETF registered under the Investment Company Act of 1940.5Securities and Exchange Commission. Investment Company Registration and Regulation Package Registration opens the fund to any retail investor with no income or net worth requirement, and it mandates daily redemption. You can sell your shares any business day, a sharp contrast to the hedge fund lock-up.
That accessibility comes with constraints. Any registered open-end fund that borrows money must maintain asset coverage of at least 300%, meaning total assets must equal at least three times borrowings.6Office of the Law Revision Counsel. 15 US Code 80a-18 – Capital Structure of Investment Companies If coverage falls below that threshold, the fund must reduce its borrowings within three days. This sharply limits how much leverage a liquid alternative fund can run compared to an unconstrained hedge fund.
On fees, registered funds cannot charge the asymmetric share-of-profits incentive fee hedge funds use. They can charge a fulcrum fee, a symmetrical adjustment that raises the management fee when the fund beats a benchmark and lowers it when it trails. Most liquid alternative funds skip that and charge a flat expense ratio, commonly in the 1% to 2.5% range for long-short equity products, well above a standard index fund but below the all-in cost of a typical hedge fund.
Costs the Expense Ratio Doesn’t Show
The headline fee is only the beginning. Short selling generates several layers of cost that reduce returns and rarely appear in marketing materials.
- Stock borrow fees. The fund pays a daily fee to borrow shares to sell short. For liquid, widely held stocks it can be negligible, but for names in high demand among short sellers or with limited supply available to borrow, the fee can run several percentage points a year.
- Dividend replacement payments. When a shorted stock pays a dividend, the short seller owes that dividend to the lender. Short a stock yielding 3% and that 3% comes straight out of the position’s return before any price movement.
- Trading friction. Long-short funds trade more than buy-and-hold strategies. Bid-ask spreads and commissions compound across the hundreds or thousands of round-trip transactions a typical fund executes each year.
These costs explain why a long-short fund has to generate meaningfully more gross alpha than a long-only fund just to deliver comparable net returns. The short book has to earn enough to cover borrowing costs, dividend obligations, and transaction expenses before it contributes a dollar of net return.
Long-short funds also depend on a prime broker to lend the shares needed for the short side, handle settlement, and finance leveraged positions. The cost of that relationship is embedded in the fund’s operating expenses.
Tax Treatment
Long-short funds tend to be less tax-efficient than traditional equity funds, and the reason traces to how the IRS treats short sale profits.
When a fund holds a short position and also owns substantially identical securities, any gain from closing the short is taxed as a short-term capital gain regardless of how long the position was open.7eCFR. 26 CFR 1.1233-1 – Gains and Losses From Short Sales Short-term capital gains are taxed at ordinary income rates, which can be roughly double the long-term capital gains rate for higher earners. Because long-short funds constantly open and close positions on both sides, they generate a higher proportion of short-term gains than a fund that buys and holds stocks for years.
Stock borrow fees add another wrinkle. The IRS does not treat them as investment interest expense, because a short sale doesn’t create an interest-bearing debt. For most investors holding a long-short fund through a mutual fund or ETF, the fund handles this accounting internally and it’s largely academic. Investors in hedge fund limited partnerships may see these costs flow through on their K-1 schedules, where the deductibility rules differ from ordinary investment interest.
If tax efficiency matters, holding a long-short fund in a tax-advantaged account like an IRA blunts the effect. Hedge fund limited partnerships are rarely eligible for retirement accounts; liquid alternative mutual funds and ETFs fit more naturally into tax-deferred wrappers.
Risks Beyond a Long-Only Portfolio
When it works, the short book gains value during declines and offsets losses in the long book, producing a smoother return path with lower volatility than a pure long-only fund. Several risks specific to the strategy can undo that.
Short Squeeze
A short squeeze happens when a heavily shorted stock rises sharply, forcing short sellers to buy back shares to limit losses. That buying pushes the price higher, triggering more forced covering. A stock’s price can theoretically rise without limit, while the most a short position can gain is 100% (if the stock falls to zero), so the loss potential on any individual short is uncapped. Managers use position sizing limits and stop-loss rules, but the risk never fully disappears.
Recall
The lender of borrowed shares can demand them back at any time. When that happens, the fund has to buy the shares back at whatever the current market price is, potentially locking in a loss on a position the manager still believed would fall. Recall risk is most acute during market stress, when lenders tend to pull back their lending activity at the worst possible moment.
Leverage
A fund with 200% gross exposure has doubled the size of its bets relative to its actual capital. Leverage amplifies gains, losses, and the speed of both. At 250% gross exposure, even modest adverse price moves across the portfolio can produce outsized drawdowns.
Counterparty
Hedge fund structures that use derivatives, swaps, or complex financing arrangements are exposed to the possibility that the counterparty on the other side fails to deliver. This is more theoretical than practical for funds using major prime brokers, but it became very real during the 2008 financial crisis when several major broker-dealers were either restructured or rescued. Liquid alternative funds face lower counterparty risk because the 1940 Act limits the types and concentrations of counterparty exposure they can carry.
How to Evaluate a Long-Short Fund
Comparing a long-short fund to the S&P 500 misses the point. These funds sacrifice upside for a different return profile, and the right evaluation starts with whether the manager is delivering on that promise.
Alpha, Beta, and Correlation
Alpha tells you how much return came from stock picks after stripping out market movement. A fund that earned 8% with a beta of 0.3 in a year the market returned 10% created meaningful alpha, because only about 3 percentage points of its return traced to market exposure. The rest came from selection. Look for consistency across multiple years and market environments. A single great year can be luck.
Beta measures how much the fund moves with the market. A beta near zero means the fund’s returns have little to do with whether stocks broadly went up or down. A beta of 0.6 or higher suggests the fund is leaning on its long book and retaining substantial market risk. Correlation confirms the same thing from a different angle: a coefficient near zero indicates genuine diversification rather than a diluted version of equity exposure.
Net Exposure Over a Full Cycle
Request or download the fund’s historical net exposure and overlay it against major market moves. A fund that ran 70% to 90% net long through both bull and bear markets was essentially a slightly hedged equity fund charging alternative-strategy fees. Not necessarily bad, but not what most investors think they’re buying when they hear “long-short.”
A manager who genuinely adapts will show meaningful variation in net exposure, pulling it down during periods of elevated risk and pushing it higher when opportunities are abundant.
The Fee Hurdle
Every dollar in fees comes out of your return. For a hedge fund charging a 1.5% management fee and a 17% performance allocation, a 10% gross return leaves you with roughly 7% after both cuts. For a liquid alternative fund charging a 1.8% expense ratio, you start each year in a 1.8% hole before the manager earns a dollar. Calculate what the fund needs to earn just to break even after all costs, then compare that hurdle to actual track record over a full market cycle. Many funds look impressive on gross returns and deliver mediocre net-of-fee performance.
Drawdown and Recovery
Pay attention to how the fund handled its worst drawdown. Recovery time matters as much as depth. A fund that dropped 12% and took three years to recover imposed a real cost that doesn’t show up in annualized return statistics. Depth of loss, speed of recovery, and fee drag over the recovery period together give the truest picture of what owning the fund actually felt like.