Wealth Management Tips and News for All People | EP Wealth Advisors

Why Investment Diversification Matters

Written by EP Wealth Advisors | June 2, 2025

Diversification plays a key role in managing investment risk. Learn how balancing asset classes, sectors, and markets can help your portfolio strategy.

Why Investment Diversification Matters

No one can predict exactly how the markets will move, but diversification offers a way to prepare for different outcomes. By spreading investments across a mix of asset classes, industries, and regions, investors can build portfolios that are less reliant on any single factor for success.

A well-diversified portfolio is about balance. Some investments may rise while others decline, but this risk can be managed by strategically providing exposure to different opportunities over time. Whether markets are thriving or facing uncertainty, diversification helps investors stay positioned for the long run.

Types of Diversification

Asset Class Diversification

A well-rounded portfolio may include a mix of asset classes, each responding differently to economic shifts:

  • Stocks: Historically associated with growth potential but also higher volatility.
  • Bonds: Typically more stable than stocks but may offer lower returns over time.
  • Real Estate: Provides exposure to tangible assets, offering potential growth that has historically been uncorrelated to stocks.
  • Commodities: Includes assets like gold and oil, which may perform differently from traditional investments.
  • Private Markets: Investments outside publicly traded exchanges, such as private equity or venture capital.

Sector and Market Cap Diversification

Investing in a variety of industries can help reduce reliance on any single sector’s performance. For example, a portfolio with exposure to technology, healthcare, and consumer goods may be less affected by downturns in any one industry.

Market capitalization, or the size of a company, is another consideration. A balanced portfolio may include:

  • Large-cap stocks - represent companies with a market capitalization typically over $10 billion, known for established operations and lower volatility compared to smaller firms.
  • Mid-cap stocks - represent companies with a market capitalization between approximately $2 billion and $10 billion, offering growth potential but higher volatility.
  • Small-cap stocks - represent companies with a market capitalization generally under $2 billion, that often carry more risk but also opportunity.

Geographic Diversification

Economic conditions vary by region. Holding a mix of domestic and international investments allows for exposure to different markets and currencies. Some investors choose to include holdings in both developed and emerging markets to broaden their opportunities.

Style Diversification: Growth vs. Value Investing

Growth investing focuses on companies expected to expand at an above-average rate compared to their peers, while value investing targets firms trading below their perceived intrinsic worth. Including both styles may help balance a portfolio’s risk and return potential.

The Potential Benefits of Diversification

Diversification can play an important role in managing risk and adapting to changing market conditions.

  • Managing Market Volatility – Different investments react to economic events in unique ways. When one asset class declines, another may remain stable or rise, potentially offsetting losses.
  • Capturing Growth Across Market Cycles – Markets go through periods of expansion and contraction. Diversification allows investors to participate in different areas of growth rather than relying on a single segment of the market.
  • Reducing Exposure to Company-Specific Risk – An individual stock may experience setbacks due to leadership changes, regulatory issues, or industry disruptions. A diversified portfolio is less dependent on the performance of any one company.

Non-Traditional Diversification Strategies

Alternative Investments and Real Assets

Beyond traditional stocks and bonds, some investors explore alternative assets such as private equity, hedge funds, or infrastructure investments. These options may offer exposure to different economic forces than public markets.

ESG Investing and Factor-Based Strategies

Environmental, social, and governance (ESG) investing considers companies based on sustainability and ethical practices. Factor investing, on the other hand, selects investments based on data-driven attributes like volatility or momentum. Both strategies provide additional ways to diversify beyond traditional asset allocation.

Market Conditions and Diversification

Market cycles influence how investments perform. Here are a few ways diversification may play a role in different conditions:


Common Diversification Mistakes

When Diversification Matters Most

While diversification is a long-term strategy, certain situations may make it especially important:

  • Approaching Retirement: As investors near retirement, risk tolerance often shifts, making a balanced approach to asset allocation a key consideration.
  • During Market Stress: Economic downturns can be unpredictable. A diversified portfolio may help investors navigate periods of volatility.
  • Major Life Events: A career change, inheritance, or large financial decision may be a good time to revisit investment strategies.
  • Wealth Preservation and Legacy Planning: Investors looking to transfer wealth to future generations may benefit from a portfolio designed with longevity and stability in mind.

For those considering their long-term financial picture, a financial health assessment can help evaluate current holdings and explore diversification strategies that align with personal goals.

EP Wealth’s investment management services can provide personalized portfolio construction and ongoing review to help investors navigate changing market conditions and adjust their strategies as needed.

 

DISCLOSURES:

  • EP Wealth Advisors, LLC. is registered as an investment advisor with the SEC and only transacts business in states where it is properly registered, or is excluded or exempted from registration requirements. SEC registration does not constitute an endorsement of the firm by the Commission nor does it indicate that the advisor has attained a particular level of skill or ability.
  • The free financial health assessment referenced here is limited to, and can only be provided to, individuals with $500,000 or more in investable assets. The health assessment is limited to an initial call or meeting with an Investment Adviser Representative (IAR) of EP Wealth to discuss and assess your current financial situation and a subsequent follow-up meeting or call to share our thoughts. No additional services will be provided. EP Wealth Advisors’ obligation is limited to extending an offer to provide these services. It is the responsibility of the individual requesting the free health assessment to accept the service offered. No guarantee or warranty can be made that any of the information discussed or relayed in these meetings will be suitable or relevant. The free financial health assessment is limited in nature and is not intended to be regarded as an attempt to provide comprehensive financial advice.
  • Hiring a qualified advisor and/or financial planner does not guarantee investment success, and does not ensure that a client or prospective client will experience a higher level of performance or results. No guaranty or warranty is made that any direct or implied results or projections being represented here will be met or sustained.
  • Information presented is general in nature and should not be viewed as a comprehensive analysis of the topics discussed. It is intended to serve as a tool containing general information that should assist you in the development of subsequent discussions. Content does not involve the rendering of personalized investment advice nor is it intended to supplement professional individualized advice. 
  • EP Wealth Advisors (“EPWA”) makes no representations or warranties as to the accuracy, timeliness, suitability, completeness, or relevance of any information presented. All expressions of option are subject to change without notice.
  • All investment strategies have the potential for profit or loss. Different types of investments and investment strategies involve varying degrees of risk, and there can be no assurance that any specific investment strategy will be suitable or profitable for a client’s portfolio. The risk of loss can never be eliminated even if working with a professional.