No-Brainer Portfolio
Four equal slices, maximum simplicity
Philosophy
Diversify across US large-cap, US small-cap, and international stocks with a bond anchor. Equal weighting removes the need for any forecasting.
Origin
2000 — Introduced in Bernstein's 2000 book: four asset classes at 25% each.
Key Principles
- ✓ 25% each in four asset classes — no optimisation needed
- ✓ Small-cap allocation captures the size premium over time
- ✓ International stocks reduce home-country bias
- ✓ Short-term bonds minimise interest rate risk
Target Allocation
| Asset | Category | Weight |
|---|---|---|
| US Large-Cap Stocks (S&P 500) | Equity | 25% |
| US Small-Cap Stocks | Equity | 25% |
| International Developed Stocks | Equity | 25% |
| Short-Term Bonds | Bonds | 25% |
Advantages
- Dead simple — four funds, equal weight, done
- Small-cap exposure may boost long-term returns
- International diversification built in
- Short-term bonds reduce interest rate sensitivity
Considerations
- 75% equity is aggressive — large drawdowns in bear markets
- No alternative assets (gold, REITs, commodities)
- No emerging markets exposure
- Small-cap stocks can underperform for long stretches
Best For
Investors with a long time horizon and high risk tolerance who value simplicity above all.
About the Author
William Bernstein is a neurologist, financial theorist, and author of The Intelligent Asset Allocator.
Frequently Asked Questions
What is the No-Brainer Portfolio?
The No-Brainer Portfolio, created by William Bernstein in 2000, allocates 25% each to US large-cap stocks, US small-cap stocks, international developed stocks, and short-term bonds. The name reflects its simplicity — equal weights, no optimization needed.
Is 75% equity too aggressive?
The 75/25 stock/bond split is aggressive and can lead to large drawdowns (30%+ in severe bear markets). However, for investors with a 20+ year time horizon, the higher equity allocation historically produces stronger returns. Short-term bonds reduce interest rate risk in the fixed income portion.
Related Strategies
Track No-Brainer Portfolio with Chillfolio
Set up this strategy in minutes. Get drift alerts, rebalance calculations, and performance tracking — all free.
Start with No-Brainer Portfolio