New on FinoLib · Volume II: Capital Markets
New on FinoLib, my finance education website: I have published an article called Family Offices and Sovereign Wealth Funds Explained, from Volume II: Capital Markets. Here is what the article explains, written as a short expert briefing; the full piece, with every worked example, is one click away.
8.7 Family Offices
The idea in plain words
A family office is a private team that manages one family’s wealth, or several families’ wealth in a multi-family office. With no outside investors, and in the US usually excluded from adviser registration, it can hold investments for very long periods. But that freedom also removes outside checks. Archegos showed in 2021 what can go wrong when no one outside is watching.
Key points
■The SEC family office rule excludes offices that advise only family clients, are family-owned and controlled, and do not hold out to the public.
■Offices still file Form 13F above $100 million of 13(f) securities.
■Costs are largely fixed: $3 million is 1.00% of $300 million but 0.30% of $1 billion.
A closer look
A family office is a private wealth-management organization set up to manage the assets of a single very wealthy family (a “single family office”) or, less commonly, several families pooling resources together (a “multi-family office”). Unlike a mutual fund or hedge fund, a family office has no external investors to report to and no fixed investment mandate — it can invest across public markets, private equity, real assets, and direct company stakes simultaneously, and can hold positions for multiple generations without the redemption pressure that constrains most other pooled investment vehicles.
Decision rule
A single-family office makes economic sense when its all-in annual cost, expressed in basis points of assets, is below what the family would pay outside for the same services (advice, reporting, tax, administration); with an illustrative $3 million cost that crossover is far easier above $1 billion (30 bp) than at $300 million (100 bp).
The costliest mistake
Mistaking the absence of outside investors for the absence of constraints. Freedom from redemptions lets a family office hold for decades, but it also removes the outsiders who would have stopped a concentrated, levered book. Archegos turned $36 billion of capital into $160 billion of exposure; at 4.4x gross leverage a 22.5% fall erases everything, and its counterparties lost about $10 billion. At 5x leverage a 20% fall does the same.
Recap
Family offices serve one or a few families, usually outside SEC adviser registration, and their fixed costs make them economic mainly for very large fortunes. Freedom from outside investors must be replaced by internal limits on leverage and concentration, the lesson of Archegos.
8.8 Sovereign Wealth Funds
The idea in plain words
A sovereign wealth fund is an investment fund owned by a country, built from commodity income, foreign reserves or budget surpluses. Its purpose decides its risk level: stabilizing the budget, saving for the future or funding development. A savings fund stays intact if it follows a spending rule tied to the expected real return, spending no more than the fund can earn after inflation.
Key points
■Stabilization funds stay liquid; savings funds can hold mostly equities and private assets.
■Norway’s fund was NOK 22,683 billion on June 30, 2026, 72.1% in equities.
■Its 3% real-return rule implies about NOK 680 billion a year of spending capacity.
A closer look
A sovereign wealth fund (SWF) is a state-owned investment fund, typically built from a country’s surplus reserves — oil and gas export revenues (Volume I’s Part 1, on petroleum and the petrodollar) being the most common source, alongside foreign exchange reserves and pension-related surpluses. SWFs invest globally across the same asset classes covered throughout this Volume — public equities, private equity, real assets, private credit — typically with a very long time horizon and limited need for near-term liquidity, since they are not managing a defined near-term liability like a typical pension fund.
Decision rule
Match the fund’s risk to its purpose: a stabilization fund that may be drawn in the next downturn belongs mostly in short, high-grade bonds; a savings fund with no withdrawals beyond a rule like Norway’s 3% can hold mostly equities and illiquid assets. Set the spending rate at or below a conservative estimate of the real return, apply it to a smoothed fund value rather than the latest mark, and publish the rule.
The costliest mistake
Running a state fund without independent governance. According to the US Justice Department, more than $4.5 billion was allegedly misappropriated from 1MDB, Malaysia’s state investment development fund, between 2009 and 2015. The Santiago Principles target exactly this: a clear legal mandate, an owner separate from the manager, audited accounts and public reporting.
What the full article covers
In the full article I take you through these sections:
■8.7 Family Offices
■8.8 Sovereign Wealth Funds
It includes worked examples, a look under the hood at the mechanics, a clear decision rule, the one mistake that costs people the most, a recap, a reveal-on-click quiz and the official sources behind every figure.
Volume II: Capital Markets
Read the full article on FinoLib
The complete article, Family Offices and Sovereign Wealth Funds Explained, with every worked example, diagram, quiz and source, is free to read in Volume II, Capital Markets on finolib.com.
Explore the Finance Education Series: Vol. II — Capital Markets · Vol. I — Global Economy · Vol. III — Finance Encyclopedia · Vol. IV — Finance Careers · Vol. V — Personal Finance