Key Takeaways
- • Cerulli Associates projects approximately $124 trillion will change hands globally through 2048, with $106 trillion expected to reach direct heirs and $18 trillion flowing to charitable organisations, according to the article.
- • Millennials are projected to receive approximately $45.6 trillion in aggregate and Gen X approximately $39 trillion of the transfer.
- • Mercer argues that strong investment governance is an investment decision rather than an administrative concern, and may support a single family office's access to illiquid assets, diversification and disciplined allocation.
- • Mercer identifies three contributors to a "return on governance": an illiquidity budget, regime-robust diversification, and dynamic asset allocation within a long-term strategic framework.
- • Mercer recommends a documented, multi-sleeve private markets program and a total portfolio approach, with secondaries and co-investments considered alongside primary allocations.
Summary
Cerulli Associates projects that approximately $124 trillion will change hands globally through 2048, of which $106 trillion is expected to reach direct heirs and $18 trillion will flow to charitable organisations. Within the direct-heir figure, Millennials are projected to receive approximately $45.6 trillion in aggregate, while Gen X stands to inherit $39 trillion. The article frames the transfer as a compounding rather than a finite event, and asks whether a single family office's investment framework can serve the generation that follows.
Mercer contends that each family differs in objectives, liquidity needs, risk appetite, time horizon and existing asset base, and that a generational transition forces these differences into the open. There is no universal portfolio for single family offices. Instead, the article calls for a coherent investment philosophy, documented and understood across generations, that can adapt over time while preserving its underlying discipline. That philosophy should address the balance between liquid and illiquid assets, the relationship between strategic and dynamic allocation, the role of non-financial objectives such as sustainability and impact, and how conflicts between family members are resolved.
According to Mercer's Investment Playbook for Single Family Offices, strong investment governance may support a family office's ability to access illiquid assets, diversify more effectively and make disciplined allocation decisions over time, based on long-term capital market assumptions applied to a long-term reference portfolio. The article states that the absence of strong governance can be a material drag on a typical family office target return, with the cumulative cost substantial over a multi-generational horizon. Mercer defines investment governance as the framework and processes guiding investment decision-making and oversight, and argues it is an investment decision in itself. The governance model should define responsibilities, the function of the investment committee and the role of external advisors, and be reviewed regularly.
Mercer identifies three contributors to this "return on governance": an illiquidity budget allocating meaningfully to private equity, private debt and private real assets; regime-robust diversification across a broader range of asset classes and strategies; and dynamic asset allocation enabling disciplined shorter-term responses within a long-term strategic framework. On private markets, the article notes that the question is rarely whether to include them, but whether existing exposure is sufficiently diversified across private equity, private debt, infrastructure and real estate. It suggests a custom-built, multi-sleeve program sized to the family's total asset base may support more durable outcomes than concentration in one strategy. Existing illiquid holdings, such as a family business or property, should be factored in. Secondaries can mitigate the J-curve and accelerate deployment, while co-investments offer targeted exposure alongside a general partner's due diligence.
Mercer concludes that a total portfolio approach provides the framework, beginning with family-level investment objectives, proceeding through strategic asset allocation design, incorporating dynamic allocation and concluding with disciplined manager selection. In this approach, each asset class is judged by its contribution to the whole, which the article suggests may hold an advantage over a more siloed approach.
Mercer contends that each family differs in objectives, liquidity needs, risk appetite, time horizon and existing asset base, and that a generational transition forces these differences into the open. There is no universal portfolio for single family offices. Instead, the article calls for a coherent investment philosophy, documented and understood across generations, that can adapt over time while preserving its underlying discipline. That philosophy should address the balance between liquid and illiquid assets, the relationship between strategic and dynamic allocation, the role of non-financial objectives such as sustainability and impact, and how conflicts between family members are resolved.
According to Mercer's Investment Playbook for Single Family Offices, strong investment governance may support a family office's ability to access illiquid assets, diversify more effectively and make disciplined allocation decisions over time, based on long-term capital market assumptions applied to a long-term reference portfolio. The article states that the absence of strong governance can be a material drag on a typical family office target return, with the cumulative cost substantial over a multi-generational horizon. Mercer defines investment governance as the framework and processes guiding investment decision-making and oversight, and argues it is an investment decision in itself. The governance model should define responsibilities, the function of the investment committee and the role of external advisors, and be reviewed regularly.
Mercer identifies three contributors to this "return on governance": an illiquidity budget allocating meaningfully to private equity, private debt and private real assets; regime-robust diversification across a broader range of asset classes and strategies; and dynamic asset allocation enabling disciplined shorter-term responses within a long-term strategic framework. On private markets, the article notes that the question is rarely whether to include them, but whether existing exposure is sufficiently diversified across private equity, private debt, infrastructure and real estate. It suggests a custom-built, multi-sleeve program sized to the family's total asset base may support more durable outcomes than concentration in one strategy. Existing illiquid holdings, such as a family business or property, should be factored in. Secondaries can mitigate the J-curve and accelerate deployment, while co-investments offer targeted exposure alongside a general partner's due diligence.
Mercer concludes that a total portfolio approach provides the framework, beginning with family-level investment objectives, proceeding through strategic asset allocation design, incorporating dynamic allocation and concluding with disciplined manager selection. In this approach, each asset class is judged by its contribution to the whole, which the article suggests may hold an advantage over a more siloed approach.
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