Portfolio a alokace
Asset Allocation: The Decision That Determines Most of Your Return
Key takeaways
- Asset allocation (how much in equities, bonds, cash) determines more than 90% of a portfolio's return profile.
- Equities offer higher returns but with greater volatility; bonds stabilise but reduce long-term potential.
- The right allocation depends on investment horizon, risk tolerance, and liquidity needs.
- Rebalancing once a year or when there is a large drift returns the portfolio to its target allocation.
Asset allocation — the decision about what portion of your portfolio to put into equities, bonds, cash, and other asset classes — is the most important investment choice you will make. Studies show it explains more than 90% of the differences in long-term returns.
Why allocation beats stock picking
The famous 1986 study by Brinson, Hood, and Beebower (and its later replications) found that asset allocation explains ~93% of the variability in portfolio returns. The selection of individual stocks or market timing contributes only a small amount. This means: the right combination of asset classes matters more than whether you buy Apple or Microsoft.
Main asset classes and their characteristics
- Equities: highest historical return (~7–10% per year in real terms), but high volatility
- Bonds: lower return (~2–4%), stabiliser in crises, negatively correlated with equities in the short run
- Real estate (REITs): inflation hedge, return between equities and bonds
- Cash: liquidity and psychological cushion, but loses value to inflation in real terms
How to determine your allocation
Basic guidelines: the longer the horizon, the more equities. The lower the tolerance for drawdown, the more bonds. The greater the need for liquidity, the more cash. A simple starting point is offered by the 100-minus-age rule. A more detailed approach is described in how to build your first portfolio.
Rebalancing
Markets shift your allocation — after a strong equity year you hold more equities than you intended. Rebalancing once a year or when drift exceeds 5 percentage points returns the portfolio to its target. It means selling what has grown and buying what has lagged — a contrarian strategy that requires discipline.
FAQ
What is asset allocation?
The division of a portfolio across different investment classes — equities, bonds, cash, real estate. It is the most important decision in investing, determining the majority of a portfolio's long-term return profile.
How much should I hold in equities and how much in bonds?
It depends on your horizon and risk tolerance. A simple rule: 100 minus age gives the equity percentage. An investor with a 30-year horizon and high tolerance for drawdown can hold 90–100% in equities.
What is portfolio rebalancing?
Restoring the target allocation when market movements have distorted it. You sell the class that has grown too large and buy the lagging one. Recommended once a year or when there is a drift of more than 5 percentage points from the target.
Does the right allocation change over time?
Yes. As you approach retirement, you typically reduce the equity component and increase bonds and cash. Target-date (life-cycle) funds do this automatically.