01
Single Investment
A large position in one stock, bond, fund or other investment can make portfolio performance heavily dependent on that holding.
INDIVIDUAL EXPOSUREINVESTMENT RISK
Concentration Risk in Investing and Portfolio Diversification
Concentration risk occurs when too much of a portfolio depends on one investment, company, sector, asset class, or market. Understanding concentration can help create a more balanced approach to portfolio risk.
01Portfolio Exposure
02Diversification
03Risk Management
PORTFOLIO EXPOSURE
PORTFOLIO WEIGHT
CONCENTRATION
Higher single-position exposure
Review
UNDERSTANDING CONCENTRATION
When one part of a portfolio has too much influence
Diversification is designed to reduce dependence on any single source of return. Concentration risk works in the opposite direction by making portfolio results more dependent on fewer holdings or exposures.
01
What is concentration risk?
Concentration risk is the possibility that a portfolio experiences a significant loss because a large portion of its value is tied to one investment or a group of investments that behave similarly.
An investor may own several stocks and still have substantial exposure to the same technology sector. The portfolio may look diversified by the number of holdings while remaining concentrated by economic exposure.
Concentration can occur at the level of individual securities, sectors, industries, asset classes, geographic markets and even sources of income.
Important distinction
Owning many investments does not automatically mean a portfolio is well diversified.
PORTFOLIO STRUCTURE
Where is your portfolio really exposed?
WHERE CONCENTRATION CAN OCCUR
Concentration risk can appear in different forms
A portfolio can become concentrated even when individual investments appear different. Looking at exposure from multiple perspectives gives a clearer picture of diversification.
02
Sector Concentration
Multiple holdings may share exposure to the same industry or economic theme, increasing sensitivity to sector-specific changes.
INDUSTRY EXPOSURE03
Asset Class
A portfolio dominated by stocks, bonds, real estate or another asset class may be vulnerable to conditions affecting that category.
ASSET EXPOSURE04
Geographic Exposure
Investments concentrated in one country or region may be affected by local economic, political or regulatory developments.
GEOGRAPHIC EXPOSUREPORTFOLIO BALANCE
WHY DIVERSIFICATION MATTERS
Diversification can reduce dependence on a single outcome
Diversification does not eliminate investment losses, but it can reduce the extent to which one company, sector or asset class determines the result of an entire portfolio.
The goal is not simply to own more investments. Effective diversification considers how different investments are related and whether they are exposed to similar economic drivers.
01Reduce dependence on one investment
02Spread exposure across different areas
03Consider how holdings may behave together
WARNING SIGNS
Signs that a portfolio may have concentration risk
Portfolio concentration is not always obvious. Reviewing exposure by holding, sector, asset class and geography can reveal risks that may otherwise remain hidden.
RISK
EXPOSURE
Look beyond the number of holdings
A portfolio with many securities can still be concentrated when those securities share similar characteristics or economic drivers.
01
One position dominates
A single holding represents a large portion of total portfolio value.
02
Several holdings share one sector
Multiple securities may be exposed to the same industry cycle.
03
Similar investments move together
Investments may appear different but react similarly to market conditions.
04
Portfolio allocation drifts
Strong performance in one holding can gradually create an outsized position.
PORTFOLIO CHECK
Balance your exposure
MANAGING CONCENTRATION RISK
Practical ways to build a more balanced portfolio
Managing concentration risk starts with understanding where your money is actually invested. Portfolio reviews can help identify positions or exposures that have become larger than intended.
01
Review Allocation
Check how much of the portfolio each holding and asset class represents.
02
Look Across Sectors
Identify whether several investments depend on the same industry or trend.
03
Rebalance Thoughtfully
Consider whether portfolio weights still match your strategy and risk tolerance.
04
Review Regularly
Portfolio concentration can change as market values and investments change.
DIVERSIFICATION FRAMEWORK
Think about diversification from multiple angles
A useful portfolio review goes beyond counting securities. Consider the underlying sources of risk and return represented by each holding.
01
Holdings
Review the size of individual positions relative to the rest of the portfolio.
02
Sectors
Identify whether multiple investments depend on the same industry.
03
Asset Classes
Consider how much exposure comes from stocks, bonds, cash and other investments.
04
Economic Drivers
Consider whether investments could react similarly to the same economic conditions.
RELATED INVESTMENT RISKS
Concentration is only one part of portfolio risk
Different risks can affect investments at the same time. Understanding how each risk works can make portfolio analysis more comprehensive.
COMMON QUESTIONS
Concentration risk explained
Concentration risk is the possibility of a significant portfolio loss because too much exposure is tied to one investment, company, sector, asset class, geographic market or another common source of risk.
Yes. Several different securities may still have similar economic exposures. Multiple holdings can belong to the same sector or respond similarly to the same market conditions.
Diversification spreads portfolio exposure across different investments and risk sources. It cannot eliminate losses, but it can reduce dependence on any single investment or market outcome.
Concentration can increase when one investment rises much faster than others, when additional money is repeatedly invested in the same area, or when market conditions change the relative value of holdings.
No. Market risk relates to losses caused by changes in market prices, while concentration risk relates to having too much portfolio exposure to a particular investment or source of risk.
There is no single schedule for every investor. Reviewing portfolio allocation periodically and after major market, investment or financial changes can help identify unintended concentration.
MAKE YOUR PORTFOLIO EASIER TO UNDERSTAND
Know where your investment risk is concentrated
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