Book SummaryThe Missing Billionaires, by Victor Haghani and James White

1-Page Summary1-Page Book Summary of The Missing Billionaires

In The Missing Billionaires, Victor Haghani and James White argue that many wealthy individuals lose their fortunes due to poor investment decisions and a lack of understanding of risk management. They suggest that by applying principles from financial economics, such as the Merton-Samuelson framework and the theory of expected utility, individuals can make more rational choices about spending, investing, and managing risk throughout their lives. The authors provide practical guidelines for portfolio construction, asset allocation, and sustainable wealth withdrawal, aiming to help readers preserve and grow their wealth over the long term.

Haghani...

The Missing Billionaires Summary Theoretical Foundations of Preserving Assets

Haghani and White explain that the Merton-Samuelson framework provides a foundation for understanding how to best allocate money to spending and investing over a lifetime. This model assumes a utility function that converts spending into utility and solves for the guideline on spending and investing that optimizes the present value of lifetime consumption's expected utility. The model makes several simplifying assumptions: asset prices follow expected patterns, taxes aren't considered, there is no income from employment, utility reflects consistent proportional risk aversion, and people are aware of their death date.

(Shortform note: The Merton-Samuelson framework may not be useful in situations where the utility function that converts spending into utility is based on relative spending rather than absolute spending. In Luxury Fever, Robert H. Frank argues that in many important domains of life, what people care about most is not their absolute level of consumption but how it compares with the consumption of others. This means that a general rise in spending often leaves everyone working harder and saving less without making anyone...

The Missing Billionaires Summary Practical Applications: Investing and Spending Rules

Haghani and White suggest adjusting spending according to your portfolio's performance to avoid depleting your funds. If you spend a fixed amount annually, you risk depleting your funds if your investments perform poorly. Spending a fixed percentage of your portfolio each year will cause your spending to diminish as time goes on due to volatility drag. Instead, spending the expected compound growth from your investments maintains the consistency of your spending and portfolio value over time. Therefore, you should adjust your spending based on how your portfolio performs—spending less when its value decreases and more when it grows.

The Constant-Percentage Withdrawal Rule

In Safety-First Retirement Planning, Wade D. Pfau discusses the pros and cons of different withdrawal strategies, including the constant-percentage withdrawal rule. He notes that this rule doesn’t necessarily mean your spending will decrease over time. Instead, your spending will fluctuate based on market performance. If your investments do well, you can spend more; if they perform poorly, you’ll need to cut back. Pfau explains...

Shortform Exercise: Understanding Risk and Spending in Investment Models

This exercise explores the principles of risk management and spending strategies within the framework of investment models, as discussed by Haghani and White.

Consider the advice to cut early spending when anticipated returns increase. How does this strategy relate to managing investment risk over a lifetime?