Hedged Share Classes in Hedge Funds: Currency Hedging Mechanics, Cost and Who Bears the Basis

The hedged share class hedge fund managers offer to sterling, euro, franc and yen investors is a rolling forward contract sized to the net asset value of that class, not a change to the portfolio. The class sells the fund's USD base currency forward against its own currency, usually for one month. It re-sizes when flows or performance push the hedge ratio outside a tolerance band. The reference standard is the 95 to 105 per cent corridor in the ESMA Opinion on UCITS share classes (ESMA34-43-296, 30 January 2017), which a Cayman fund adopts by choice rather than by regulation. Gains, losses, forward points and running costs belong to the hedged class alone. Whether the class works turns on who funds a losing roll, and on what happens to other classes if a hedge loss exceeds the class that owns it.

"We treat a hedged class as a small derivatives programme that the fund has agreed to run for one group of investors, and we design it on that basis. The forward is sized to the class, the losses and the carry are booked to the class, and the cash to settle a losing roll has to be available on the day it is due. Where we see it go wrong is rarely the hedge ratio. It is a class that has shrunk to the point where nobody is watching it closely, or a settlement that lands on the whole fund instead of the class that caused it." David Lloyd, Chief Executive Officer at CV5 Capital

Executive Summary

A hedged share class gives a non-USD investor the return of a USD strategy in their own currency, less the cost of the hedge.

• The hedge is a forward sized to the class NAV, rolled on the dealing cycle and adjusted when flows or performance breach a stated tolerance.
• The ESMA 95 to 105 per cent corridor and its non-contagion principle are the reference standard, adopted by a Cayman fund rather than imposed on it.
• Forward points, cross-currency basis, dealing spread and settlement cash are the real cost, and all of them belong to the hedged class.
• In a single Cayman company the classes share one pool of assets, so a hedge loss larger than the class falls on everyone unless it is contained by design.
• CIMA's Rule on the Calculation of Asset Values requires price sources and service provider roles to be written into the NAV Calculation Policy, and the forwards and hedging provider belong there.
• The offering document should state the hedging objective, the tolerance band, the allocation of results, the collateral terms and the spill-over risk.

What a Hedged Share Class Actually Hedges

A hedged class does not hedge the portfolio. The manager may hold assets in many currencies, and those exposures are part of the strategy. The class hedges something narrower: its own value, expressed in the fund's base currency, against the class currency. A GBP hedged class of a USD fund sells USD forward and buys GBP in an amount matching the USD value of the class's assets. If the dollar falls, the forward gains roughly what those assets lose in sterling terms.

Hedge funds generally use this NAV hedge rather than a look-through hedge of only the class's non-base currency holdings, which cannot be sized to a portfolio that changes daily. The distinction matters for disclosure: an investor who reads "hedged" as "no currency exposure" will be surprised by residual exposure from the underlying positions.

Managers raising in the United Kingdom, Switzerland, the eurozone and Japan meet mandates that require a hedged class. The point is developed in CV5's guides for Japanese asset managers launching a Cayman fund and Swiss investment managers and family offices using Cayman hedge funds. The wider architecture of currency, fee and liquidity classes is set out in launching a hedge fund with multiple share classes.

Sizing and Rolling the Hedge

The forward is sized to the class NAV at each valuation point and dated to the next. Funds dealing more often than monthly usually still run a monthly forward and adjust it between rolls. At each roll the maturing forward settles in cash and a new forward is entered at the new class NAV. That settlement is the moment the hedge stops being an accounting entry and becomes a liquidity event.

Three things move the hedge ratio between rolls. Subscriptions add assets without adding to the forward, which under-hedges the class; redemptions do the reverse. Performance changes the USD value of the class while the notional stays fixed, so a strong month over-hedges and a weak month under-hedges. Most funds set a tolerance band and adjust when a breach is identified, on the dealing day that caused it or at a weekly check. The example below is illustrative and rounded, and ignores the hedge's own profit and loss.

The Hedge Ratio Tolerance: A Reference Standard, Not a Cayman Rule

No Cayman statute or CIMA rule prescribes a hedge ratio for a share class. The tolerance is a matter for the fund's articles, offering document and board, adopted because investors and their operational due diligence teams expect one. The document they measure it against is the ESMA Opinion on share classes of UCITS, which applies to UCITS in the European Union.

Paragraph 9 of the Opinion sets out four principles: a common investment objective, non-contagion between classes, pre-determination of every class feature, and transparency to all investors. Paragraph 26 states the operational tests for a currency-hedged class. Over-hedged positions should not exceed 105 per cent of the class NAV. Under-hedged positions should not fall short of 95 per cent of the portion of the class NAV to be hedged. Hedged positions should be reviewed at least at the fund's valuation frequency, with a rebalancing procedure so that a breach is not carried forward month to month. Paragraph 27 calls these the minimum standard.

A monthly dealing fund that reviews the hedge only at the valuation point sits inside the ESMA wording, yet a large subscription on day one leaves the class under-hedged for a month. Most funds therefore write a weekly or dealing-day review into the procedure. What matters in Cayman is that the tolerance, the review frequency and the rebalancing trigger are written down, disclosed and followed, because the fund's own offering document is the standard its board and auditor will apply.

Collateral, Margin and the Cash Drag

An FX forward is a bilateral derivative, and the counterparty is usually the fund's prime broker or a bank with which the fund holds an FX line. The terms sit under a master agreement, typically on the ISDA form, with a credit support annex setting out who posts collateral and on what thresholds. Some prime brokers run share class forwards inside the prime brokerage margin account, netting the mark against the portfolio's other margin; others require a separate arrangement. The difference decides whether a losing hedge consumes cash the strategy was using, and whether a winning hedge sits as an uncollateralised receivable until settlement.

The cash drag has three components: cash kept unencumbered so a losing forward can settle without a forced sale, variation margin posted where the mark moves against the fund, and the opportunity cost of both. In a large currency move, a forward on a class equal to a fifth of the fund can produce a settlement that is a meaningful share of the fund's free cash. The treasury function must know that number in advance, as set out in treasury and counterparty management for hedge funds.

The counterparty exposure is the fund's, not the class's. If the counterparty defaults while the forward is in the money, the whole fund is an unsecured creditor for the receivable, although only the hedged class was meant to benefit. In a segregated portfolio company, section 218 of the Companies Act (2025 Revision) requires a contract that is to bind a segregated portfolio to be executed by the company on behalf of that named portfolio. The master agreement and each confirmation should therefore identify the portfolio to which the hedge belongs.

Allocating Gains, Losses and Forward Points to the Class

Every gain and loss on the forward, realised and unrealised, every settlement, every dealing spread, and any incremental administration cost of the programme is booked to the hedged class and to no other. Paragraph 24 of the ESMA Opinion states this as the accounting methodology the overlay requires. In a Cayman fund the authority comes from the articles of association, which typically allow the directors to allocate assets, liabilities, income and expenses to a class.

The forward points are the cost investors most often misunderstand. A forward rate differs from spot by an amount reflecting the interest rate differential between the two currencies over the period, adjusted for the cross-currency basis and the counterparty's spread. When the class currency carries a lower rate than the dollar, as the yen, the franc and at times the euro have, the hedged class gives up approximately the rate differential each month. That is not a fee and not a hedging error; it is the price of receiving the strategy's return in a lower-yielding currency. When the class currency carries the higher rate, the class earns the points.

Who bears the basis has two answers because the word has two meanings. The cross-currency basis, the deviation of the forward from pure interest parity, is a component of the forward price and is borne by the hedged class. The tracking basis, the gap between the hedged and base class returns that forward points do not explain, comes from timing, tolerance drift and intra-month flows and is also borne by the hedged class. Neither is borne by the base class, and a divergence larger than the forward points explain should prompt a reconciliation.

Spill-Over: When a Hedge Loss Exceeds the Class

Share classes in a single Cayman exempted company are accounting divisions of one pool of assets, created under the articles, and the company's creditors, including the forward counterparty, have recourse to the whole. Paragraphs 20 and 21 of the ESMA Opinion describe the consequence. The derivatives in one class's overlay become part of the common pool, and a loss on them that exceeds the value of that class falls on investors who never asked for a hedge. The Opinion calls this contagion or spill-over, and paragraph 22 accepts it can be minimised but not eliminated.

The mitigants listed at paragraph 25 translate directly into a Cayman fund's procedures. The forward notional should be no larger than the class can settle from its own cash and eligible collateral. Assets, liabilities and profit and loss should be identified by class at every valuation. The fund should stress test the loss that would spill to the other classes under a large currency move, and the hedging strategy should be pre-defined. A Cayman fund commonly adds a minimum class size, below which the class is closed or merged, because a class too small to bear its own tail loss is the likeliest source of spill-over.

A fund whose hedged classes are a modest fraction of the whole can carry the residual spill-over with disclosure and a cash buffer. A fund built for a Swiss or Japanese investor base, where the hedged class may be the largest, has a stronger case for the portfolio boundary from the start.

Who Runs the Hedge and How It Reconciles into NAV

Three operating models are common. The investment manager executes the forwards itself and the administrator books them to the class. An outsourced hedging provider, by category a bank, a specialist overlay manager or the administrator's own hedging service, receives the class NAVs and flows and executes to a mandate. Or the administrator calculates the notional and instructs execution through the fund's counterparty.

Whoever executes, the administrator reconciles: it confirms the open forwards to the counterparty's statement, marks them to the fund's pricing source, books the result to the class and recomputes the class NAV per share. CIMA's Rule on the Calculation of Asset Values for Regulated Mutual Funds requires a written NAV Calculation Policy disclosed in the offering document. Rule 5.4.6 requires the policy to define the roles of the fund's service providers in the valuation process, and Rule 5.4.7 requires it to identify the price sources for each instrument type with an escalation procedure for exceptions. An FX forward is an instrument type and the hedging provider is a service provider, so both belong in the policy.

Rule 5.8 requires the NAV to be calculated by a service provider independent of the investment manager and the operators. Rule 5.14 places ultimate responsibility for oversight of the valuation process on the operators, with an annual review of the policy. The board should therefore see a hedge ratio history by class, every breach and its cure, and a reconciliation of each hedged class's return to the base class. CV5's article on valuation, NAV production and investor reporting for Cayman hedge funds sets out where it sits in the reporting package.

What the Offering Document Must Say

The ESMA transparency principle asks that the existence and nature of all classes be disclosed to all investors, including those outside the hedged class, because the overlay adds counterparty and operational risk for the whole fund. The checklist below is CV5's recommended practice, to be read with the class terms addressed in founder share classes in hedge funds and using share classes to meet different fee models.

Common mistakes

• Describing the class as "hedged" without stating what is hedged, at what ratio, with what tolerance, and by whom.
• Holding no cash buffer for the roll and discovering the first losing settlement on the day it falls due.
• Letting a hedged class shrink below the size at which it can bear its own tail loss, with no closure mechanism.

Key Takeaways

• Decide the hedging objective, the tolerance band and the review frequency before the class is created, and write them into the offering document.
• Size the cash buffer to a stress move on the largest hedged class, and confirm whether the forwards net inside the prime brokerage margin or need a separate credit support annex.
• Instruct the administrator to book every hedge result and cost to the hedged class and to reconcile its return to the base class at every valuation.
• Adopt the ESMA 95 to 105 per cent corridor as the disclosed standard for UK, Swiss, EU or Japanese investors, and state that it is adopted, not imposed.
• Set a minimum class size and a closure mechanism, and run the spill-over stress test for the board.
• Where the hedged class will be the largest class, put the currency at the segregated portfolio boundary from the start.

Frequently Asked Questions

How does a hedged share class in a hedge fund work?

The fund sells its base currency forward against the class currency in an amount equal to the net asset value of the hedged class, usually for one month. It rolls the contract at each valuation point. Gains and losses on the forward are booked to the hedged class so that its investors receive the strategy's return in their own currency with most of the exchange rate movement removed. The hedge covers the value of the class, not the currency exposures inside the portfolio.

What does share class hedging cost?

The main cost is the forward points, which reflect the interest rate differential between the class currency and the base currency over each roll period, plus the cross-currency basis and the counterparty's dealing spread. There is also a cash cost, because the fund must hold unencumbered cash or post collateral to settle a losing forward. All of these are borne by the hedged class alone, and the cost is not fixed: it moves with interest rates and with the number of adjustments made during the month.

Is the ESMA 95 to 105 per cent hedge ratio a requirement for a Cayman fund?

No. The corridor appears in the ESMA Opinion on share classes of UCITS (ESMA34-43-296, January 2017), which applies to UCITS in the European Union. A Cayman hedge fund is not subject to it, but many adopt it in their offering documents as the reference standard. Investors and operational due diligence teams in the UK, Switzerland, the EU and Japan measure hedged classes against it. Once adopted, the fund's own offering document becomes the standard the board and auditor apply.

What is spill-over risk in a hedged share class?

Spill-over, also called contagion, is the risk that a loss on the hedging forwards of one class exceeds the assets of that class and is borne by investors in the other classes. It arises because share classes in a single company share one pool of assets and one set of creditors. Funds mitigate it by limiting the forward notional to what the class can settle, holding cash buffers, stress testing, setting a minimum class size, and in a segregated portfolio company by placing currency classes in separate segregated portfolios.

Who runs the currency hedge for a hedged share class?

The investment manager may execute the forwards as part of its trading. Alternatively an outsourced share class hedging provider executes to a mandate using the class NAVs and flows, or the administrator calculates the notional and instructs execution through the fund's counterparty. In every model the administrator reconciles the open forwards, marks them, allocates the results to the class and produces the class NAV, and the fund's NAV Calculation Policy should name the responsible service provider and the price source.

Should each currency class be a separate segregated portfolio?

It depends on the size of the hedged class relative to the fund and on how sensitive the investors are to residual spill-over risk. Under the Cayman Companies Act the assets of a segregated portfolio are protected from the creditors of other portfolios, so a hedge loss cannot cross the portfolio boundary, whereas classes within one portfolio still share a pool. The cost is a separate NAV, register and reporting for each currency. Funds where the hedged class will be the largest class have the strongest case for the separate portfolio.