What is Concentration Risk?
Concentration risk occurs when a significant portion of your portfolio is allocated to a single holding or a small number of holdings. This creates dependency on the performance of those specific investments.
If 60% of your portfolio is in a single company stock, a -20% decline in that stock would reduce your total portfolio value by -12% — regardless of how the rest of your holdings perform.
Why Concentration Matters
Single-Point Dependency
When one position dominates your portfolio, your returns become highly dependent on that single investment's performance.
Amplified Impact
Company-specific events — earnings, lawsuits, management changes — can have outsized effects on your total portfolio value.
Asymmetric Losses
A 50% loss requires a 100% gain to recover. Concentrated positions amplify this asymmetry.
Types of Concentration
Concentration can occur at different levels within a portfolio.
Position Concentration
A single stock, ETF, or fund making up a large percentage of your portfolio
Sector Concentration
Multiple holdings in the same industry, such as all technology stocks
Geographic Concentration
All investments in a single country or region
Asset Class Concentration
100% in equities with no fixed income, commodities, or other asset types
The Role of Diversified Funds
A large position in a broad market fund is structurally different from a large position in a single stock. Total market ETFs, S&P 500 funds, and global index funds contain hundreds or thousands of underlying holdings, spreading risk internally.
Single stocks or narrow sector ETFs have no internal diversification — company-specific risk is fully borne by the investor.
A portfolio with 80% in a total market index fund is structurally different from one with 80% in a single company stock, even though both have a "concentrated" position.
Impact on Your EPR Score
Equily's Portfolio Rating considers concentration as part of the overall portfolio analysis.
Diversification Factor
Position sizing contributes to the diversification component of your EPR score
Security Type Awareness
EPR distinguishes between broad market funds and individual securities when evaluating concentration
Equily surfaces this information to help you understand your portfolio's structural characteristics. This is educational analysis, not financial advice.
Key Takeaways
Concentration Creates Dependency
Large positions mean your portfolio's performance is tied to specific investments.
Not All Concentration Is Equal
A large position in a diversified fund is structurally different from a large position in a single stock.
Multiple Dimensions
Concentration can occur by position, sector, geography, or asset class.
Concentration is a structural characteristic, not inherently good or bad.
Understanding your portfolio's concentration helps you understand your exposure profile.