Playbooks / Portfolio
The permanent portfolio
The rule
Harry Browne's proposition was that nobody knows what the economy will do next, that everybody who claims otherwise is guessing, and that a portfolio should therefore be built to survive all four things it could do rather than to profit from the one you expect.
Four equal quarters. Stocks for prosperity. Long term government bonds for deflation and falling rates. Gold for serious inflation. Cash for recession. Rebalance when a quarter drifts, on a rule rather than a view.
That is the whole design, and its simplicity is deliberate rather than naive.
What it gets right
The framing, above all. Most portfolios are one bet expressed several ways, and their owners have never asked which economic condition their holdings need in order to work. This one starts from that question and answers it evenly, which is the same insight as All Weather reached from a different direction and with more machinery.
And the record on its actual claim is decent. ETF implementations running from the mid 2000s produced compound annual growth in the high sevens with a standard deviation around six percent, which is a genuinely narrow range of outcomes for a portfolio holding a quarter in equities. Low volatility is what it promises and low volatility is what it has delivered.
The objections, which are real
A framework page that skips these is a sales page.
Twenty five percent in gold is a very large permanent bet. Gold produces no cash flow, so a quarter of the portfolio permanently held in it is a standing claim that its behaviour in a crisis is worth more than the income given up over the decades when there is no crisis. That claim is arguable, and gold and real rates sets out the version of it that survives evidence, which is narrower than the version usually sold.
Twenty five percent in long duration government bonds is a very large permanent bet on rates. Much of the portfolio's admired record ran through a multi decade decline in interest rates, which is the single best environment a long bond can have. Repeating it requires rates to fall again from where they now are.
And the two failed together. In 2022 inflation rose while growth fell, long bonds fell alongside equities, and the design's central assumption, that the quarters would not all be hurt by the same thing, did not hold. That is the same year that broke risk parity strategies generally, and it is the honest test case for anything claiming to be all weather.
What it is really competing with
Not an aggressive portfolio. A simple one.
The comparison that matters is against a static sixty forty or a three fund portfolio, and the permanent portfolio's case against those is a narrower distribution of outcomes bought with a lower expected return. Whether that is a good trade depends entirely on what the money is for, which is the allocation by horizon question rather than a question about the design.
There is also a behavioural objection that deserves its own line, because it has been made by people sympathetic to the strategy. Its followers have a documented tendency to adopt it after a crash and leave it during a boom, which converts a low volatility strategy into a high volatility experience. Nothing in the allocation prevents that, and it is the same failure the behaviour gap describes everywhere else.
The Gulf version
The design is currency agnostic. Almost every implementation of it is not.
The cash quarter and the bond quarter exist to be stable and to be spent, which means they belong in the currency of the liability rather than in dollars because the book was written in America. For a dirham liability, dollar assets behave the same way for as long as the peg holds, which currency risk and the dirham peg treats properly. For school fees in sterling or a retirement in euros, they do not, and a portfolio built to survive four economic conditions can still be undone by a fifth thing it never considered.
The same applies to the equity quarter, which in the original is US stocks and should for most readers here be a global fund at world market weight, in an appropriate domicile.
What to take from it
Possibly not the portfolio.
The durable part is the question it forces: name the condition each of your holdings needs in order to work, and count how many of them need the same one. Run that on a balance sheet with a Dubai apartment, a salary from a Dubai company and a global equity fund, and the answer is that three quarters of it want the same box.
That is worth knowing whether or not anybody buys gold afterwards, and it is the same exercise concentration limits asks for in different words.
The arithmetic
Where it breaks
- Reading the low volatility of the past two decades as a property of the design rather than of the period. Much of that record covers an era of falling interest rates, which flattered the long bond quarter specifically, and a repeat requires rates to fall again from where they now are.
- Holding twenty five percent of a portfolio in gold without ever stating the case for it. Gold produces no cash flow, so a permanent quarter in it is a permanent claim that its diversification is worth more than the income foregone, and that claim deserves to be made explicitly rather than inherited from a book.
- Underestimating what the long bond quarter can do. Long duration government bonds fell heavily in 2022 alongside equities, which is precisely the correlation the design assumes will not happen, and the portfolio had one of its worst years as a result.
- Abandoning it in the years it lags. Its whole proposition is a narrower range of outcomes, which means it will trail a rising equity market for long stretches, and an investor who adopts it after a crash and leaves it during a boom has bought the volatility they were trying to avoid.
- Holding the cash and bond quarters in dollars because the original was American, when the money will be spent in dirhams, sterling or euros. The design is currency agnostic; the implementations usually are not, and the mismatch is a risk the four boxes were never meant to cover.
When to use it
When the appeal of a portfolio is that it does not require a forecast, and when the priority is a narrow range of outcomes rather than the highest expected return. It is also the cleanest illustration of what balancing across economic conditions actually looks like, which makes it worth understanding whether or not it is adopted.
Sources
- Bogleheads blog, Harry Browne's permanent portfolio
- Bogleheads wiki
- FRED, 10-year Treasury inflation-indexed security (DFII10)
- Aswath Damodaran, valuation data and teaching materials
Last reviewed . Educational research, not personal advice. Disclosure standards.