Lesson 9.1: Hedge fund structure, fees and high-water marks
Learn how hedge funds are structured and paid: management and performance fees, hurdles, high-water marks, why the fee is an option, and what investors keep.
By the end of this lesson you will be able to describe how a hedge fund and its management company are set up, name the service providers around it, work out the fees an investor pays with a management fee, a performance fee and a high-water mark, say how much of a fund's gross return an investor really keeps, explain why a performance fee behaves like a call option and what incentive that creates, and list what an investor should check before committing money. You will show that a fund with gross returns of +20, −10, +15 and +10 per cent turns 100 into 136.6 before fees and 121.2 after a 2 per cent management fee and a 20 per cent performance fee with a high-water mark, so that the investor keeps 58 per cent of the gross gain, that without the high-water mark the investor ends with 118.3, and that a 20 per cent performance fee on a fund with 15 per cent volatility is worth about 1.2 per cent of the fund's value a year to the manager, rising to 2.4 per cent if the volatility doubles. You should have read Lessons 4.2, 6.1 and 6.2. The mathematics is percentages, a running maximum and the option formula of Lesson 6.2. This course is education about how markets and research work, not investment advice.
Modules 1 to 8 taught the techniques. Module 9 turns to the industry in which they are used. Many readers of this course will end up working at, selling to or investing in a hedge fund, and the business has its own logic that is quite separate from the trading. A fund can have a brilliant strategy and still fail as a business, or have a mediocre strategy and a very successful business. This lesson covers how a fund is built and how it is paid, since the fee structure shapes behaviour as much as any model does.
What a hedge fund is
A hedge fund is a pooled investment vehicle, open to a limited set of sophisticated or wealthy investors, that has far greater freedom than a mutual fund. It can sell short, use leverage and trade derivatives, in many markets, and it is paid in part by a share of the profits. The word hedge is historical: the first funds, in the 1940s, held long and short positions to hedge market risk. Today it describes a legal form and a fee structure, not a single strategy. A hedge fund can be a market-neutral stock picker, a currency trader, a distressed-debt buyer or a high-frequency market maker, and Lesson 9.2 maps the main kinds.
The freedom comes with a price: hedge funds are open only to investors who can bear the risk and are expected to understand it, and they restrict redemptions. In India, hedge-fund-style vehicles are regulated as Category III Alternative Investment Funds (AIFs) under SEBI's Alternative Investment Funds Regulations of 2012. Category III funds are those that employ diverse or complex trading strategies and may use leverage. The rules set a minimum investment per investor (historically ₹1 crore), limits on the number of investors, requirements for the manager and disclosure duties. These rules are revised from time to time, so read the current regulations and the fund's own documents before relying on any of the numbers here. Many global hedge funds are set up offshore, in places such as the Cayman Islands, with onshore vehicles for investors in their home country.
The structure
A hedge fund is really two separate things, a fund and a manager.
The fund is the legal entity that holds the investors' money and the assets. It is often a limited partnership or a company. The investors are its limited partners (LPs) or shareholders: they provide the capital and have limited liability.
The investment manager is a separate company, owned by the founders, which makes the investment decisions and runs the business. It is also the general partner in a partnership structure, with unlimited liability, though that liability is usually held through a shell company. It earns the fees.
Around them is a ring of service providers, each doing something the manager is not allowed or equipped to do, which is what gives investors some protection.
Provider · What it doesPrime broker · Lends cash and securities (so the fund can use leverage and short), holds assets, clears trades and reports positions
Administrator · An independent firm that values the assets, calculates the net asset value (NAV) and processes subscriptions and redemptions
Custodian · Holds the assets safely, separate from the manager
Auditor · Audits the accounts each year
Legal counsel and compliance · Draw up the documents and ensure the manager follows the rules
Large global funds often use a master–feeder structure. Several feeder funds, one for taxable investors in one country, one for tax-exempt or foreign investors elsewhere, all invest in a single master fund that does the trading, so that every investor shares the same portfolio while tax and legal treatment differ. Funds also issue different share classes, with different fees and terms, for different investors: early investors often get lower fees.
Independence matters. An administrator that is genuinely separate from the manager is the main defence against the fraud of an invented NAV, which has been behind several of the industry's worst scandals.
How the fund is paid
Management fee and performance fee
A hedge fund charges two kinds of fee:
The management fee is a fixed percentage of the assets under management, usually 1 to 2 per cent a year, charged whatever the performance. It pays the cost of running the business, the salaries, data, technology and compliance.
The performance fee, also called the incentive fee or carry, is a percentage of the profits, traditionally 20 per cent. It rewards the manager for returns.
The traditional "two and twenty" means 2 per cent and 20 per cent. Average fees have come down over time, and they vary widely by strategy and fund size. A fund of hedge funds, which invests in other funds, adds its own layer on top.
Hurdle rates, high-water marks and crystallisation
Three rules decide when the performance fee is due.
A hurdle rate is a minimum return the fund must beat before any performance fee is paid, for instance the return on cash. It protects investors from paying for a return they could have earned risk-free.
A high-water mark (HWM) is the highest NAV at which a performance fee has been paid. No performance fee is due until the NAV has recovered to the HWM after a loss. It prevents the manager from being paid twice for the same gains, for instance a gain in year 1, a loss in year 2 and a recovery in year 3.
Crystallisation is the date on which the performance fee is calculated and becomes payable, usually each year or each quarter. Once crystallised, the fee is kept even if the NAV then falls, unless the contract has a clawback.
Worked example 1. A fund starts with a NAV of 100. Its gross returns, before any fees, are +20, −10, +15 and +10 per cent in four successive years. The management fee is 2 per cent of the opening NAV, paid at the end of the year, and the performance fee is 20 per cent of the gain above the high-water mark, calculated after the management fee. Year by year:
Year · Opening NAV · After gross return · Management fee · NAV after management fee · Performance fee · Closing NAV · High-water mark1 · 100.00 · 120.00 · 2.00 · 118.00 · 20% × (118.00 − 100.00) = 3.60 · 114.40 · 114.40
2 · 114.40 · 102.96 · 2.29 · 100.67 · 0 (below the HWM) · 100.67 · 114.40
3 · 100.67 · 115.77 · 2.01 · 113.76 · 0 (below 114.40) · 113.76 · 114.40
4 · 113.76 · 125.14 · 2.28 · 122.86 · 20% × (122.86 − 114.40) = 1.69 · 121.17 · 121.17
Without fees, 100 would have grown to 100 × 1.20 × 0.90 × 1.15 × 1.10 = 136.62, a compound return of 8.11 per cent a year. After fees the investor has 121.17, a return of 4.92 per cent a year. Total fees were 13.87, which is 37.9 per cent of the gross gain of 36.62, so the investor kept 58 per cent of the gain. Notice that in years 2 and 3 the manager earned only the management fee, since the fund was below its high-water mark. In year 4 the fee is paid only on the part of the gain above 114.40, not on the whole year's gain.
Now remove the high-water mark and charge the performance fee on each year's positive gain, with no memory of earlier losses. The fee in year 3 becomes 20 per cent × (113.76 − 100.67) = 2.62, and in year 4 it is 1.78, and the investor ends with 118.25, 2.9 less. The high-water mark is worth about 2.4 per cent of the investor's final wealth here. The more volatile the fund, the larger the difference.
Try the fee waterfall for one year with your own numbers.
The performance fee is an option
Look at the performance fee as a payoff. At the end of the year the manager receives 20 per cent of the amount by which the NAV exceeds the high-water mark, and nothing if it is below. That is exactly 20 per cent of a call option on the fund's NAV with a strike equal to the high-water mark, as in Lesson 6.1. The manager does not pay for the option, and does not share in the losses.
The option's value follows from Lesson 6.2. For a fund at its high-water mark, the call is at the money, and with an interest rate of zero its value is about 0.4 × σ × √T per unit of NAV, where σ is the fund's volatility and T the time to the calculation date. The performance fee is 20 per cent of that:
Fund volatility · Value of an at-the-money one-year call (per 100 of NAV) · Value of a 20% performance fee10% · 3.99 · 0.80
15% · 5.98 · 1.20
30% · 11.92 · 2.38
At 15 per cent volatility the performance fee is worth 1.2 per cent of NAV a year to the manager, in expectation, before any skill. Add the 2 per cent management fee and the manager's expected income is about 3.2 per cent of the assets just for running a fund at that volatility, whatever the expected return. Doubling the volatility to 30 per cent doubles the value of the option, to 2.4 per cent.
This is the most important incentive in the industry. The manager gains from volatility, and does not bear the downside. A fund below its high-water mark, with the option far out of the money, has an incentive to take more risk to get back to the money, and a fund that has made a loss large enough may close and the manager start again with a clean high-water mark. Investors counter with alignment: managers invest their own money in the fund, high-water marks, clawbacks, limits on leverage and risk, and independent oversight.
Liquidity terms
Hedge funds can take positions in illiquid assets and use leverage, so they restrict how fast investors can withdraw.
A lock-up is a period, often one or two years, during which an investor cannot redeem.
A notice period requires, say, 30 to 90 days' warning of a redemption, and redemptions are allowed only on certain dates, monthly or quarterly.
A gate limits the share of the fund that can be redeemed on one date, for example 10 or 25 per cent, so that a rush for the exit does not force a sale of assets at distressed prices. Many funds used gates in 2008, to the anger of investors who wanted out.
A side pocket separates illiquid or hard-to-value assets from the rest, so that redemptions are paid from the liquid part and the illiquid part is realised later.
The point of these terms is to match the liabilities with the assets. A fund that promised daily liquidity to investors while holding illiquid positions could be forced to sell at fire-sale prices in a panic, and the forced selling harms the investors who remain. The cost for the investor is that their money can be trapped exactly when they want it most. The lessons of Lesson 9.4 return to this.
The economics of the management company
For the manager, the management fee covers costs and the performance fee is the upside. A simple illustration, with invented numbers: a fund with ₹1,000 crore of assets and a 2 per cent management fee earns ₹20 crore a year. If the team, data, technology, rent, legal and compliance cost ₹12 crore, the business makes ₹8 crore before any performance fee. The size of the fund therefore matters a great deal to the founders: assets bring fee revenue almost independently of performance, and there is a temptation to gather more than the strategy can handle. But a strategy has a capacity (Lesson 4.4): as the fund grows, impact eats into returns, and a fund that is too large earns less per rupee. The best managers close the fund to new money before that point, and the weaker ones keep gathering.
What an investor should check
All-in fees, including the expenses passed through to the fund, and any fund-of-funds layer.
Performance fee terms: hurdle, high-water mark, crystallisation frequency and clawback.
Liquidity: lock-up, notice, gates, and the liquidity of the assets against the liquidity offered.
Leverage and risk limits, and how they are monitored.
Operational due diligence: independent administrator, reputable auditor and prime broker, segregation of duties, and a clear valuation policy.
Capacity and how the manager handles growth.
The track record, with its uncertainty. A Sharpe ratio estimated from a few years has a wide range (Lesson 4.2), and hedge fund databases suffer from survivorship bias (funds that closed drop out, as in Lesson 3.1) and backfill bias (funds add their good early history when they join the database).
Alignment: how much of the manager's own money is invested.
The code below runs the fee waterfall with and without a high-water mark, the compound returns and the value of the performance fee as an option.
python
import numpy as np
from math import exp, log, sqrt
from scipy.stats import norm
def runfund(grossreturns, management=0.02, performance=0.20, highwatermark=True):
nav, hwm, rows, fees = 100.0, 100.0, [], 0.0
for g in grossreturns:
opening = nav
aftergross = opening (1 + g)
mfee = management opening
aftermfee = aftergross - mfee
base = hwm if highwatermark else opening # without a mark, each year starts afresh
pfee = performance max(aftermfee - base, 0)
nav = aftermfee - pfee
hwm = max(hwm, nav) if highwatermark else nav
fees += mfee + pfee
rows.append((opening, aftergross, mfee, pfee, nav, hwm))
return rows, nav, fees
gross = [0.20, -0.10, 0.15, 0.10]
for flag, label in ((True, "with a high-water mark"), (False, "without a high-water mark")):
rows, nav, fees = runfund(gross, highwatermark=flag)
print(label)
for year, (op, gr, m, p, end, h) in enumerate(rows, 1):
print(f" year {year}: opening {op:7.2f} | after gross {gr:7.2f} | management fee {m:5.2f} | performance fee {p:5.2f} | closing {end:7.2f} | high-water mark {h:7.2f}")
print(" final NAV", round(nav, 2), "| total fees", round(fees, 2))
grossnav = 100 np.prod([1 + g for g in gross])
rows, netnav, fees = runfund(gross)
print("gross NAV", round(grossnav, 2), "| compound return gross", round((grossnav / 100) 0.25 - 1, 4), "| net", round((netnav / 100) 0.25 - 1, 4))
print("fees as a share of the gross gain", round(fees / (grossnav - 100), 3), "| the investor keeps", round((netnav - 100) / (grossnav - 100), 3))
the performance fee as a call option on the NAV (strike = the high-water mark, at the money)
def bscall(S, K, r, sig, T):
d1 = (log(S / K) + (r + 0.5 sig 2) T) / (sig sqrt(T))
return S norm.cdf(d1) - K exp(-r T) norm.cdf(d1 - sig sqrt(T))
for vol in (0.10, 0.15, 0.30):
call = bscall(100, 100, 0.0, vol, 1.0)
print(f"volatility {vol:.0%}: at-the-money call {call:.2f} | 20% performance fee {0.2 call:.2f} per 100 | approximation {0.2 0.3989 vol 100:.2f}")
Common mistakes
Judging a fund by its gross return. Fees took 38 per cent of the gain in the example.
Ignoring the high-water mark. Without it the investor pays twice for the same recovery.
Forgetting the manager's option. The performance fee gives the manager a reason to take more risk, not less.
Paying for beta as if it were alpha. A fund that tracks the market with leverage earns its fee for what an index provides for almost nothing.
Assuming liquidity will be there in a crisis. Gates and lock-ups exist for exactly that moment.
Skipping operational due diligence. Fraud and valuation errors do more damage than bad trades.
Reading a short record as skill. A Sharpe ratio of 1.0 over five years has a range from about −0.1 to 2.1.
Trusting a database of funds. Survivorship and backfill bias flatter hedge fund indices.
Letting a fund grow beyond its strategy's capacity. The fee income grows and the returns fall.
Key takeaways
A hedge fund is a pooled vehicle for sophisticated investors with freedom to short, use leverage and trade derivatives, and with performance-linked fees. It is a legal form and a fee structure, not one strategy. In India, such funds are Category III AIFs under SEBI's rules, which should be checked for current terms.
The fund and the management company are separate. Around them sit a prime broker, an administrator, a custodian, an auditor and counsel. An independent administrator is the main protection against an invented NAV.
The management fee (1 to 2 per cent of assets) pays the costs. The performance fee (traditionally 20 per cent of profits) rewards returns, subject to a hurdle, a high-water mark and a crystallisation date.
In the example, 100 grows to 136.6 gross and 121.2 net of a 2 and 20 fee with a high-water mark, a return of 4.92 per cent a year against 8.11 per cent gross. The investor keeps 58 per cent of the gain. Without the high-water mark the investor ends with 118.3.
A performance fee is 20 per cent of a call option on the NAV struck at the high-water mark. It is worth about 1.2 per cent of NAV a year at 15 per cent volatility and 2.4 per cent at 30 per cent, so the manager gains from volatility and does not share the losses.
Lock-ups, notice periods, gates and side pockets match liquidity with the assets, and can trap investors in a crisis.
Investors should check all-in fees, fee terms, liquidity, leverage, operational due diligence, capacity, the uncertainty of the record and alignment.
Check yourself
1. A fund starts the year at a NAV of 150 with a high-water mark of 150. It earns 12 per cent gross, charges a 2 per cent management fee on the opening NAV and a 20 per cent performance fee. What is the closing NAV?
After gross: 168.00. Management fee: 3.00, leaving 165.00. Performance fee: 20% × (165 − 150) = 3.00. Closing NAV = 162.00.
2. The next year the fund loses 5 per cent gross. What is the NAV, and is any performance fee due?
After gross: 162 × 0.95 = 153.90. Management fee: 3.24, leaving 150.66. The high-water mark is now 162, so no performance fee is due. NAV = 150.66.
3. Why does a manager of a fund 20 per cent below its high-water mark have an incentive to take more risk?
The performance fee is a call option far out of the money. Its value rises with volatility, and the manager does not share the losses, so more risk raises the chance of getting back above the high-water mark.
4. Why do funds with illiquid positions impose lock-ups and gates?
To avoid being forced to sell assets at distressed prices if many investors redeem at once, which would harm those who stay.
5. A fund database reports an average hedge fund return of 9 per cent. Name two biases that make this too high.
Survivorship bias, since funds that closed are removed, and backfill bias, since funds that join the database add their earlier, usually good, results.
Try this
Set aside forty-five minutes. You need Python and the code in this lesson.
1. Run the code. Check the fee waterfall, the compound returns and the option values.
2. Change the gross returns to +30, −25, +15, +20 and +10 per cent. How much of the gross gain does the investor keep, with and without a high-water mark?
3. Add a hurdle rate of 4 per cent a year to the waterfall. What changes?
4. Use the option simulator to find the volatility at which the expected performance fee equals the management fee.
5. Simulate a fund with a true Sharpe ratio of 0 and a volatility of 15 per cent for ten years with 1,000 paths, applying the fee rules. How much does the manager earn on average, and how much do the investors lose?
6. Read the offering document or a summary of terms of any fund you can find, and list its fees, hurdle, high-water mark, lock-up and gates.
7. Write a short note: whether the fee structure of that fund aligns the manager with the investor, and what you would negotiate.
A good result is a fee waterfall you can compute by hand, an option value for the performance fee and a list of the terms in a real fund's documents. The next lesson looks at what funds actually do with the money: the main strategy families and the shape of their returns.
Read more
Stephen Brown, William Goetzmann and James Park's work on hedge fund survival and Vikas Agarwal and Narayan Naik's studies of hedge fund risk explain the data problems and risks. Andrew Lo's Hedge Funds: An Analytic Perspective is a thorough academic text on structure, fees and risk. Sebastian Mallaby's More Money Than God is a readable history of the industry. Zvi Bodie, Alex Kane and Alan Marcus's Investments discusses the option-like nature of performance fees, and Goetzmann, Ingersoll and Ross's 2003 paper "High-Water Marks and Hedge Fund Management Contracts" in the Journal of Finance values the fee. For India, read SEBI's Alternative Investment Funds Regulations and its circulars on AIFs.
Tags: Quant Trader Hedge funds Performance fees High-water mark Fund structure