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Portfolio Diversification: Different Risks, Not More Assets

Ten holdings can fall together. Learn genuine diversification through correlation, risk drivers and rebalancing.

Published: August 3, 2026Updated: August 3, 20262 min read
Portfolio Diversification: Different Risks, Not More Assets
Goal
Reduce single risks
Tool
Correlation
Prepared by: HowMuch? Editorial & Data Team
Data cutoff: August 3, 2026
Figures and links re-reviewed on August 3, 2026.
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Ten Stocks Are Not Always Diversification

Ten assets tied to the same country, sector or economic factor can fall together in a crisis. Genuine diversification balances different sources of risk within one portfolio.

What Correlation Tells Us

Correlation measures how two assets move together. Historical correlation is not fixed and can rise in a crisis, but it is still a better starting point than simply counting holdings.

Asset Allocation

Equities, bonds, cash, gold, property and high-volatility digital assets have different growth and risk drivers. Suitable weights depend on goals, horizon, currency and loss capacity; no percentage is universal.

Rebalancing

When one asset rises rapidly, its portfolio weight and risk contribution increase. Calendar- or threshold-based rebalancing restores the target risk mix but can create tax and transaction costs.

Checklist

  • Write down the economic risk behind each holding
  • Measure country and currency concentration
  • Review normal- and crisis-period correlations separately
  • Set the rebalancing rule before trading

How Should You Use the Result?

This analysis is designed to make assumptions visible and reproducible, not to declare one universal winner. Change the amount, start date, currency and contribution frequency in the calculator to see how sensitive the outcome is. Review the worst window as carefully as the best one before making a decision.

A real investment can differ because of execution price, bid-ask spread, commission, tax, product expenses and the data provider's closing-time convention. The figures are therefore a gross historical comparison, not a personal return or a forecast.

Sources and methodology

This content is for informational purposes only. It does not constitute investment advice. Past performance does not guarantee future results.

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