Family Office Mandate: Income Target, Duration Gap and an Arbitrage Fund
A family office with $40 million asks for a Shariah-compliant portfolio to fund a 5.2-year liability stream with a 4.5% annual income target. The proposed policy is 55% sukuk, 35% Shariah-compliant equities, 10% commodity murabaha. The sukuk sleeve is 70% sukuk al-ijarah and 30% sukuk al-murabaha; the murabaha sukuk have an average life of 2.1 years and trade at 96.5. The equity sleeve has a 28% allocation to technology and 12% to healthcare. The client's board wants at least 15% in liquid assets and no more than 10% in illiquid alternatives. The manager proposes adding an 8% allocation to a Shariah-compliant 'arbitrage' fund that uses wa'd-based leverage and charges 2/20. The fund has a 12-month lock-up, and its Shariah opinion is a one-page letter from an unknown advisor. The manager argues the arbitrage fund will close the income gap. Current portfolio duration is 3.8 years.
1. Assess whether the proposed 55/35/10 policy can meet the 4.5% income target and the 5.2-year liability horizon, given the stated constraints.
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The policy is unlikely to meet the 4.5% income target without taking more credit or duration risk than the client appears to authorize. A 55% sukuk sleeve with 30% in murabaha sukuk and 70% in ijarah sukuk may yield roughly 4% to 4.5% depending on credit quality, but the equity sleeve's dividend yield is likely 2.5% to 3%, and commodity murabaha yields little. A weighted income estimate is closer to 3.5% to 4.0%, below target. The duration profile is also mismatched: 3.8 years versus a 5.2-year liability horizon leaves a 1.4-year gap, so the portfolio is exposed to reinvestment risk when the shorter murabaha sukuk mature. The murabaha sukuk at 96.5 with a 2.1-year average life may offer accretion, but that is a return of discount, not a durable income solution. The manager should model multiple rate scenarios, show the income shortfall, and propose either a higher-quality longer-dated ijarah allocation, a modest equity income tilt, or a lower spending target. It should not claim the target is met without evidence.
2. Evaluate the proposed 8% arbitrage fund allocation against the client's liquidity and Shariah governance constraints.
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The 8% allocation is within the 10% illiquid-alternatives cap on its face, but the 12-month lock-up must be counted as illiquid, and the manager must confirm that no other holding is already classified as illiquid. The client also requires at least 15% in liquid assets; with 10% commodity murabaha and a 35% equity sleeve, liquidity may still exceed 15%, but the stress case should assume that equities are not liquid at the desired price. The bigger problem is Shariah governance. A one-page opinion from an unknown advisor is not adequate for a leveraged wa'd structure. The manager needs a full fatwa or approval letter from a recognized SSB, a description of the wa'd mechanics, confirmation that the leverage does not create riba or excessive gharar, and disclosure of counterparty and termination risks. The 2/20 fee is also high and must be justified against the expected income contribution. The arbitrage fund should not be used to close an income gap until these conditions are met; if approved, a smaller 3% to 5% allocation with a liquidity stress test is more defensible.
3. Recommend a revised allocation and the conditions under which the manager could accept the mandate.
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A revised allocation could be 50% sukuk, 35% Shariah-compliant equities, 10% Islamic liquidity, and 5% in the arbitrage fund only if approved. Within the sukuk sleeve, the manager should increase longer-dated ijarah sukuk to close part of the duration gap and cap murabaha sukuk at 25% of the sleeve to limit reinvestment risk. The equity sleeve should be diversified away from the 28% technology concentration and should include defensive income names. The manager should present a base case with income around 4.0% to 4.3%, not 4.5%, and show the client the trade-off between income, duration and credit risk. Conditions for accepting the mandate are: written SSB approval of the arbitrage fund and any leverage; a liquidity stress test showing at least 15% liquid assets; a duration gap policy with rebalancing triggers; full fee disclosure; and a client acknowledgment that the 4.5% income target is not guaranteed. If the client insists on 4.5% without additional risk, the manager should decline or recommend a lower spending rate.