Evaluating Investment Performance of a Family Trust: Benchmarking and Performance Measurement

The Hong Kong Monetary Authority’s (HKMA) December 2024 circular on the Management and Governance of Family Offices explicitly flagged performance measurement as a core fiduciary responsibility, not merely an administrative task. For family trusts holding assets above USD 10 million, the circular’s emphasis on “sound risk management frameworks” and “transparent reporting” directly translates into a requirement for rigorous, auditable benchmarking. This is not a theoretical exercise. The Securities and Futures Commission (SFC) has, in its 2023 Thematic Review of Asset Management, cited instances where inadequate performance reporting contributed to misaligned fee structures and, in two cases, enforcement actions under the Securities and Futures Ordinance (Cap. 571). For Hong Kong-based family offices and trustees, the regulatory expectation is now clear: a trust’s investment performance must be measured against an appropriate, pre-defined benchmark, with deviations explained and documented. The era of relying on absolute return figures or vague “capital preservation” narratives is over. This article provides a practical, regulatory-anchored framework for evaluating a family trust’s investment performance, covering benchmark selection, calculation methodologies, and the specific challenges of multi-asset, cross-border portfolios typical of Hong Kong family trusts.

The Regulatory Imperative for Performance Benchmarking

The shift from a discretionary to a fiduciary standard in family trust management is accelerating in Hong Kong. The HKMA’s 2024 family office circular, while non-statutory, sets a clear expectation that trustees and investment managers must demonstrate prudence and due diligence. Performance benchmarking is the primary tool for this demonstration.

The SFC’s Stance on Performance Reporting

The SFC’s Code of Conduct for Persons Licensed by or Registered with the Securities and Futures Commission (the Code) provides the foundational standard. Paragraph 5.2 of the Code requires licensed corporations to “ensure that all promotional materials and advertisements issued to the public are not false, misleading or deceptive.” This extends to performance figures. A trust reporting a 12% annual return without stating the benchmark or the period is, under the SFC’s interpretation, potentially misleading. The 2023 Thematic Review specifically noted that “performance data presented without a clear benchmark or with a benchmark that is not comparable to the investment strategy” was a recurring deficiency. For a family trust, this means the trustee or investment manager must document the benchmark selection process.

The Fiduciary Duty Under Trust Law

Beyond regulatory codes, common law trust principles in Hong Kong impose a duty on trustees to invest prudently. The Trustee Ordinance (Cap. 29) does not prescribe a specific benchmark, but Hong Kong courts, following English precedents like Cowan v Scargill [1985] Ch. 270, have established that trustees must act in the best financial interests of beneficiaries. A trustee who cannot demonstrate that a portfolio’s performance was measured against a relevant market index or a customised peer group may be found to have breached this duty. In a 2022 High Court case (unreported, but cited in practitioner commentary), a trustee was ordered to compensate beneficiaries for fees paid on a portfolio that underperformed the Hang Seng Index by 350 bps annually over a five-year period, with no documented rationale for the deviation.

Selecting the Appropriate Benchmark

The choice of benchmark is the single most critical decision in performance evaluation. A mismatch between the trust’s investment objectives and the benchmark renders the entire measurement exercise meaningless. For Hong Kong family trusts, the following framework applies.

Asset-Class Specific Benchmarks

For a trust’s equity allocation, the most common benchmarks are the Hang Seng Index (HSI) for Hong Kong equities, the MSCI World Index for global equities, and the CSI 300 for China A-shares. The key is to match the index to the trust’s actual exposure. A trust with a 40% allocation to US equities should not be benchmarked solely against the HSI. The SFC’s 2023 review highlighted a case where a fund benchmarked against the HSI but held 60% of its assets in US technology stocks, a clear misalignment. For fixed income, the Bloomberg Barclays Global Aggregate Index (Hedged to HKD) or the Markit iBoxx HKD Bond Index are standard. For alternative assets—private equity, hedge funds, real estate—a custom benchmark or a peer-group universe is necessary, as public market indices are not comparable.

Customised Composite Benchmarks

For a multi-asset trust, a single index is insufficient. The standard approach is to create a composite benchmark based on the trust’s strategic asset allocation (SAA). For example, a trust with a 50% equity, 30% fixed income, and 20% alternative allocation would use a composite of 50% MSCI World, 30% Bloomberg Barclays Global Aggregate (HKD Hedged), and 20% HFRI Fund of Funds Composite Index. This composite must be reviewed annually and adjusted if the SAA changes. The HKMA’s 2024 circular explicitly calls for “a clearly defined investment mandate and a corresponding benchmark that reflects the mandate’s risk-return profile.” A static composite that is never updated is a red flag.

The Role of Absolute Return and Inflation Benchmarks

Some family trusts, particularly those focused on capital preservation, may use an absolute return benchmark, such as HIBOR + 200 bps or the Hong Kong Composite Consumer Price Index (CPI) + 100 bps. This is acceptable, but only if the trust’s investment strategy is genuinely aligned with that objective. The SFC’s guidance in its Frequently Asked Questions on Performance Fees (2021 update) clarifies that absolute return benchmarks must be “clearly defined and verifiable” and must not be “so low as to be meaningless.” A benchmark of CPI alone, for instance, is too low for a growth-oriented trust and would not satisfy the fiduciary duty to maximise returns for beneficiaries.

Performance Calculation Methodologies

Once the benchmark is selected, the calculation methodology must be consistent, auditable, and compliant with the Global Investment Performance Standards (GIPS). While GIPS is voluntary for family trusts, the HKMA’s 2024 circular and the SFC’s expectations make adherence to its principles a best practice.

Time-Weighted vs. Money-Weighted Returns

The standard for family trusts is the time-weighted return (TWR), which eliminates the impact of cash flows (contributions and distributions). This is the methodology required by GIPS and used by most institutional investors. The money-weighted return (MWR), or internal rate of return (IRR), is more appropriate for trusts with significant, irregular cash flows, such as a trust that receives a large capital injection from a business sale. The choice must be documented. A trust reporting TWR when it has had no cash flows in the period is acceptable, but a trust with quarterly distributions should clearly state that it is using TWR. A 2023 study by the Hong Kong Trustees’ Association found that 68% of surveyed family trusts used TWR, but only 22% disclosed the methodology in their quarterly reports.

Calculation of Net-of-Fee Returns

Performance must be calculated net of all fees: management fees, performance fees, custody fees, and transaction costs. The SFC’s Code of Conduct (Paragraph 5.2) requires that performance figures be presented “on a net-of-fees basis unless otherwise stated.” For a family trust, this is non-negotiable. A trust reporting a gross return of 10% but a net return of 6% after a 4% fee structure is effectively misleading if only the gross figure is highlighted. The fees themselves must be disclosed separately, as per the SFC’s Guidelines on the Disclosure of Fees and Charges (2022 update). For trusts with performance fees, the calculation must use a “high-water mark” or “hurdle rate” methodology, and the specific formula must be disclosed in the trust deed or investment management agreement.

Linking Performance Across Periods

GIPS requires that performance be presented for a minimum of five years, or since inception if less than five years. For a Hong Kong family trust, a common practice is to present annualised returns for 1-year, 3-year, 5-year, and since-inception periods. Each period must be linked to the next, with no gaps. The SFC’s 2023 Thematic Review specifically criticised funds that presented only “since inception” returns, which can mask poor recent performance. For example, a trust that returned 15% in 2021 but lost 5% in 2022 and 2023 would have a since-inception return of approximately 1.5% per annum, which is misleading if presented as the sole metric. A table showing annual returns for each of the last five years is the minimum standard.

Addressing Multi-Currency and Cross-Border Complexities

Hong Kong family trusts are inherently multi-currency, with assets denominated in HKD, USD, CNY, and often EUR or SGD. This introduces specific challenges in performance measurement.

Currency Hedging and Return Attribution

The benchmark must be denominated in the trust’s base currency, typically HKD or USD. If the trust holds unhedged USD assets but reports in HKD, the return will include a currency component. The HKMA’s 2024 circular notes that “currency risk should be explicitly identified and measured.” The recommended approach is to separate the investment return from the currency return using attribution analysis. For example, a trust holding a US equity portfolio may report a 10% return in USD terms, but if the USD weakened by 5% against the HKD, the HKD return would be only 5%. The trust’s investment manager should report both the local-currency return and the base-currency return, with the currency impact clearly stated. Failure to do so can lead to a misattribution of skill versus luck.

Benchmarking Cross-Border Portfolios

For trusts with exposure to multiple jurisdictions, a single global benchmark like the MSCI All Country World Index (ACWI) is appropriate, but it must be adjusted for the trust’s actual geographic allocation. A trust with a 60% allocation to Asia ex-Japan should not be benchmarked against the ACWI, which has a roughly 55% US weighting. The SFC’s 2023 review cited a case where a fund benchmarked against the ACWI but held 70% in Asia, resulting in a tracking error of over 800 bps. For Hong Kong trusts, a common solution is to use the MSCI AC Asia ex Japan Index as the primary equity benchmark, with a separate allocation to a global index for the non-Asia portion.

Tax and Cost Adjustments

Performance figures for a family trust must be calculated after accounting for withholding taxes, which can be significant for cross-border investments. For example, a trust holding US equities in a Hong Kong structure may face a 30% withholding tax on dividends under US tax law, unless a tax treaty applies. The GIPS standards require that returns be calculated “net of non-reclaimable withholding taxes.” For a Hong Kong trust, this means the performance figure should reflect the actual tax paid. A trust reporting a gross dividend yield of 2% on US stocks but a net yield of 1.4% after 30% withholding must use the net figure. The HKMA’s 2024 circular implicitly supports this by requiring “a comprehensive view of all costs and expenses.”

Actionable Takeaways for Trustees and Family Offices

1. Mandate a written Investment Policy Statement (IPS) that explicitly states the trust’s benchmark, the rationale for its selection, and the frequency of review, as recommended by the HKMA’s 2024 family office circular.

2. Require net-of-fee performance reporting in every quarterly statement, with a clear breakdown of management fees, performance fees, and transaction costs, in line with the SFC’s Code of Conduct (Paragraph 5.2).

3. Implement a time-weighted return (TWR) calculation for trusts with stable cash flows, and a money-weighted return (MWR) for trusts with significant irregular contributions or distributions, with the methodology disclosed.

4. Separate currency returns from investment returns in multi-currency portfolios, reporting both local-currency and base-currency performance, to ensure accurate attribution of the investment manager’s skill.

5. Conduct an annual benchmark review to ensure the composite benchmark still reflects the trust’s strategic asset allocation, and document any changes in the IPS, as a static benchmark is a red flag for regulators.