How Do Hedge Funds Work?

Somewhere in the world, right now, a hedge fund is simultaneously betting that a stock will go up and betting that the same stock will go down. It is also probably using borrowed money to amplify those bets, charging its investors a fee structure that would be illegal in any retail financial product, and keeping the details of what it actually owns secret from everyone except its own investors.

This is not a get-rich-quick scheme. Many of the people running these funds are among the most sophisticated investors in the world, and the strategies they use are genuinely interesting and sometimes brilliant. The hedge fund industry also has a genuine problems with fees that erode returns, with locked-up capital that makes exiting difficult, and with a transparency problem that makes it nearly impossible for investors to evaluate risk in real time.

The short answer

A hedge fund is a private investment vehicle that pools capital from wealthy individuals and institutions to invest using strategies unavailable to regular mutual funds. They can short sell, use large amounts of leverage, bet on mergers, currencies, commodities, and interest rate moves. They charge a fee structure called 2 and 20, meaning 2% of assets under management plus 20% of profits. The industry attracted over $4 trillion in assets before a prolonged period of underperformance drove many institutional investors to reduce their allocations.

The full picture

The core strategies

The name hedge fund comes from the original concept: a fund that hedges its bets, using short positions to reduce market exposure while maintaining long positions in undervalued assets. In practice, modern hedge funds pursue dozens of distinct strategies, many of which have almost nothing to do with hedging.

Long-short equity is the most common strategy. The fund buys stocks it believes will rise (long positions) and sells stocks it believes will fall (short positions). The net exposure to the market is the difference between the two. A fund that is 60% long and 30% short has a net exposure of 30%, meaning it benefits from rising markets but is less exposed than a fund that is purely long. The goal is to generate returns independent of whether the overall market goes up or down.

Global macro funds make big directional bets on currencies, interest rates, commodities, and stock indices based on their analysis of global economic conditions. George Soros’s Quantum Fund famously broke the Bank of England in 1992 by shorting the British pound on the grounds that its exchange rate was unsustainable within the European Exchange Rate Mechanism. These funds can generate enormous returns in a single well-timed trade, but they also produce the most volatile performance.

Event-driven strategies focus on corporate transactions: mergers, acquisitions, bankruptcies, restructurings, and spin-offs. In a merger arbitrage strategy, a fund might buy the stock of the company being acquired while shorting the acquirer’s stock, betting that the deal will close at the agreed price. The returns are smaller per trade but more predictable, depending on whether deals close or fall apart.

Relative value strategies look for pricing inefficiencies between related securities and bet that the gap will close. Convertible bond arbitrage is a classic example: a fund buys a company’s convertible bond (a bond that can be converted to stock) while shorting the company’s equity, capturing the spread between the bond’s theoretical value and its market price.

Market neutral is a specific type of long-short strategy where the fund attempts to eliminate market risk entirely by maintaining equal long and short exposure. The theory is that the fund makes money from stock selection, not from whether the market goes up or down. In practice, achieving true neutrality is difficult, and many market-neutral funds were caught in the 2007-2008 financial crisis when correlations between long and short positions spiked.

Leverage and its consequences

Hedge funds are permitted to use substantially more leverage than mutual funds or retail investors. This means borrowing money to amplify returns, both positive and negative.

A fund with $1 billion in capital that uses 5 to 1 leverage has $5 billion in investment exposure. If the underlying investments rise 10%, the fund makes 50% returns. If they fall 10%, the fund loses 50%. If they fall 20%, the fund is wiped out.

This is not hypothetical. Long-Term Capital Management, one of the most celebrated hedge funds in history, blew up in 1998 because its leverage assumptions were wrong. With $4 billion in capital and roughly $1.25 trillion in off-balance-sheet derivatives, a relatively small move in interest rates across multiple markets created losses that required an emergency bailout organized by the Federal Reserve (Federal Reserve history of LTCM).

The ability to use leverage is also what makes hedge funds attractive to institutional investors who want to amplify returns from a strategy they believe in.

Fee structure and why it matters

The 2 and 20 fee structure became the industry standard and is now widely criticized. The management fee of 2% is charged on all assets regardless of performance, meaning a fund that loses money still collects $20 million per billion under management. The performance fee of 20% is charged on profits above a benchmark or high-water mark.

The mathematics of performance fees are punishing. A fund that makes 10% when the market makes 10% collects 20% of the profits, so investors get 8% while the fund gets 2%. A fund that makes 30% when the market makes 5% is genuinely delivering alpha, but investors still pay the 20% performance fee on the spread.

Over a 20-year period, a fund earning 12% gross annually with a 2 and 20 fee structure will deliver roughly 9.2% net to investors, according to investment consultant research. That 2.8% annual fee drag compounds dramatically over time. On $100 invested at 12% gross for 20 years, you end up with $964. Before fees. After 2 and 20 fees, you end up with $577. The fees take 40% of your final wealth (Investment Company Institute research on fund fees).

Many institutional investors now negotiate fee reductions based on their size and the difficulty of the strategy. A $500 million commitment from a large pension fund will typically get better terms than a $50 million commitment from a family office.

The access problem

Hedge funds are legally permitted to sell shares only to accredited investors (individuals with $1 million in assets excluding their primary residence, or $200,000 in annual income) and qualified purchasers (generally $5 million in investments). In practice, minimum investments of $1 million to $10 million are common, and many funds are closed to new investors for years at a time.

This means the returns that hedge funds generate are largely inaccessible to ordinary investors. The people who benefit from hedge fund returns are the ultra-wealthy and institutions. When a Yale endowment earns 30% in a year because of its hedge fund allocations, that return is not available to someone with $50,000 in a 401(k).

This access gap is one of the most underappreciated features of the wealth inequality landscape. The investment strategies that generate the most sophisticated, market-independent returns are legally reserved for people who were already wealthy enough to meet the minimum investment requirements.

Why it matters

Hedge funds matter for three reasons beyond their size.

First, they are major participants in virtually every financial market. Their trading activity sets prices for stocks, bonds, currencies, and commodities. Understanding hedge fund strategies helps explain price movements that seem inexplicable on the surface: why a merger announcement causes a target stock to jump 40% when the deal premium was only 20%, or why a currency moves sharply before any economic data is released.

Second, hedge funds have a track record of creating systemic risk that extends beyond their own portfolios. The LTCM crisis in 1998 and the 2008 financial crisis both involved hedge funds either amplifying market moves or creating contagion that spread to the broader financial system. When a highly leveraged fund is forced to liquidate positions quickly, it can create cascading selling pressure that affects assets unrelated to its original thesis.

Third, the hedge fund industry is a useful case study in how information advantages and complexity can extract fees from clients who cannot easily evaluate whether they are getting value. The 2 and 20 structure persisted for decades despite being widely understood to be unfavorable to investors, because the barrier to entry for sophisticated investment management is high and because networks and relationships matter in institutional allocation.

Common misconceptions

Hedge funds always hedge. Many do not. A pure macro fund taking large directional bets on interest rates or currencies has no hedge at all. Some funds use the term hedge fund for marketing reasons while running strategies that are not actually hedged.

High fees mean high quality. The best-performing funds of the past decade have typically been small, early-stage funds with simple strategies. The largest, most established hedge funds with the highest fees have often delivered the most disappointing returns after fees. Fee structure tells you how a fund is compensated, not how well it will perform.

Hedge fund returns are independent of stock market returns. While it is true that some strategies, particularly market-neutral strategies, are designed to perform in all market conditions, most hedge fund returns are positively correlated with equity markets over time. The COVID crash of March 2020 saw many hedge funds lose money alongside the market. True market neutrality is rare and difficult to maintain.

Hedge funds are safer because they can profit from falling markets. Short selling does allow funds to profit from declining prices, but the mechanics of short selling create their own risks. Short squeezes, where a stock rises sharply instead of falling, can wipe out a short seller in days.

Key terms

Long-short equity — An investment strategy that combines long positions in stocks expected to rise with short positions in stocks expected to fall, with the net market exposure being the difference between the two.

Leverage — Using borrowed money to increase the size of an investment position. Amplifies both gains and losses proportionally.

2 and 20 — The standard hedge fund fee structure: 2% annual management fee on total assets plus 20% of profits above a benchmark or high-water mark.

High-water mark — The highest level of performance a fund has achieved. Performance fees are only charged on profits above this level, protecting investors from paying fees on recovered losses.

Market neutral — A strategy that attempts to eliminate net market exposure by maintaining equal long and short positions, so returns depend on stock selection rather than market direction.

Short selling — Borrowing shares, selling them at the current price, and later buying them back at a lower price to return them to the lender. Profits when the stock falls, losses when it rises.

** Accredited investor** — Legal designation for investors who meet income or net worth thresholds that permit investment in private offerings including hedge funds.