What is the Permanent Portfolio and how does it differ from All-Weather?

Question

AcadiFi · Accepted Answer

The Permanent Portfolio, designed by Harry Browne in 1981, is an equal-weighted allocation across four asset classes, each of which excels in a different economic environment.

**Allocation**: 25% each in
- **Stocks** (broad US equity index) - prosperity
- **Long-term Treasury bonds** (20+ year) - deflation
- **Gold** - inflation
- **Cash / short-term Treasury bills** - recession / tight money

**Key differences vs All-Weather**:
| Feature | Permanent | All-Weather |
|---|---|---|
| Weights | Fixed 25% each | Risk-weighted |
| Leverage | None | Up to 3x (institutional) |
| Complexity | Very simple | Complex multi-asset |
| Maintenance | Annual rebalance to 25% | Daily rebalance to vol targets |
| Design philosophy | Equal dollar to four environments | Risk parity across regimes |

**Historical performance (1978-2024 approx.)**:
- Annualized return: ~7.5%
- Volatility: ~7%
- Max drawdown: ~-14% (2022)
- Sharpe: ~0.6
- Correlation to S&P 500: ~0.5
- Worst year: -12% (2022)
- Best year: +19% (2010)

**Strengths**:
- Extreme simplicity; rebalanced once per year.
- No leverage, no options, no exotic derivatives.
- Weathered 1987, 2000-2002, 2008, 2020, and 2022 without catastrophic losses.
- Low turnover minimizes tax drag.

**Weaknesses**:
- 25% cash drag in bull markets.
- 25% gold is controversial - non-yielding, volatile, no cash flow.
- Long bonds hurt during sustained rate-hiking cycles (2022).
- Arguably unnecessarily conservative for long-horizon investors.

**Practitioner adjustments**: some advocates (Craig Rowland, J.M. Lawson) suggest modifications:
- Tilt stock allocation to 30-40% for longer horizons.
- Use TIPS instead of pure gold for inflation hedge.
- Mix intermediate and long bonds to reduce duration risk.

**ETF implementation**: a simple DIY version uses SPY (25%), TLT (25%), GLD (25%), SHV (25%) with annual rebalancing. PRPFX (Permanent Portfolio Fund) is the flagship mutual fund version, though its actual allocation differs slightly (silver, Swiss francs, natural resources).

**CFA Level III use**: often cited as a defensive baseline for very risk-averse investors or endowments/foundations with low risk tolerance.

What is the Permanent Portfolio and how does it differ from All-Weather?

Master Level III with our CFA Course

Related Questions

Practice Questions