Also known as: HWM, Loss carryforward, High watermark
A High-Water Mark is the highest peak value an investment account has ever reached, and it becomes the threshold above which a money manager can charge a performance fee. In retail-brokerage partnerships — PAMM, MAM, or copy-trading models — the manager only earns a profit share on new gains that exceed this recorded peak.
The mechanic exists to stop investors from paying twice for the same performance. If a managed account rises to $10,000, the HWM locks at $10,000. Should it fall to $8,000, the manager earns nothing on the climb back from $8,000 to $10,000 — that ground was already paid for. Only once the balance clears $10,000 does a new performance fee apply, and only on the amount above it.
Consider a 25% performance fee. An account grows from $10,000 to $12,000, so the manager earns 25% of the $2,000 gain, or $500, and the HWM resets to $12,000 (usually after deducting the fee). Next quarter the account drops to $11,000 then recovers to $12,500. The fee applies only to the $500 above the $12,000 mark — $125 — not to the recovery from $11,000.
High-Water Marks are standard in hedge funds and are increasingly written into MAM/PAMM manager agreements and prop-firm profit splits. For partners marketing these products, the HWM is the single clearest proof that a manager's incentives are aligned with the investor's long-term growth rather than short-term churn.
The broker or managed-account platform records the account's peak equity, typically at each performance-fee crystallisation date (monthly or quarterly). At that date the platform compares current equity to the stored HWM. If current equity is higher, the manager's profit share is calculated on the difference, the fee is deducted, and the HWM is reset upward to the new peak.
If current equity is at or below the HWM, no performance fee is charged and the mark stays unchanged. The account must first climb back above the old peak before any new fee accrues. Some agreements add a "hurdle rate" — a minimum return (say 3% a year) that must be cleared on top of the HWM before fees apply.
The platform stores the highest equity the account has reached, usually at each fee-settlement date.
At the monthly or quarterly settlement, current equity is compared to the stored High-Water Mark.
If equity exceeds the mark, the performance fee is calculated on the excess amount only.
The fee is taken from the account and the High-Water Mark is reset to the new, higher peak.
If equity is below the mark, no fee is charged until the account recovers past the old peak.
Why it matters for partnership: If you promote PAMM/MAM managers or copy-trading, the High-Water Mark is a trust-builder: it proves the manager only earns on genuine new profit, so investors never pay fees twice for recovering losses. Explain it clearly and you convert skeptical, fee-sensitive investors.
On a broker running MetaTrader MAM, a manager sets a 20% performance fee with a quarterly HWM. An investor's $50,000 allocation grows to $58,000, so the manager earns 20% of the $8,000 gain — $1,600 — and the mark resets to the post-fee balance near $56,400. The next quarter the account dips to $53,000 then recovers to $57,000; the manager earns only on the $600 above the $56,400 mark, roughly $120.
| Aspect | With High-Water Mark | No High-Water Mark |
|---|---|---|
| Fee on recovery | None until old peak is cleared | Charged on every up-period |
| Investor cost | Lower, no double-charging | Higher, pays on repeated recoveries |
| Manager incentive | Grow net new equity | Churn volatility for fees |
| Marketing story | Strong trust signal | Hard to defend to investors |
Put the High-Water Mark front and centre in PAMM marketing — frame it as "your manager only gets paid when your account hits new highs" to disarm fee-sensitive investors.
Failing to warn a PAMM investor why no profit share was taken this month — because the account is still climbing back toward its old peak — which reads as a lack of transparency and erodes trust.
Most platforms proportionally adjust the mark for withdrawals so the manager is not unfairly penalised. Confirm the exact method in the manager agreement, as treatment varies by platform.
No. The HWM is the prior peak equity, while a hurdle rate is a minimum return that must be cleared on top of it before fees apply. An agreement can use both together.
The investor, because it prevents paying performance fees twice on the same recovered gains. It also gives managers a clean, defensible fairness story to market.
It is checked at each fee crystallisation date — commonly monthly or quarterly. The mark only moves up, never down.
Many do for profit splits, paying the trader's share only on gains above their previous account peak. Rules differ, so read the firm's payout terms.
Reputable platforms tie the mark to the investor allocation, not a resettable session, to block this. If a manager pushes to reset it, treat that as a red flag.
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