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AFO2023-10-28T18:48:00+00:00

The S&P 500’s Concentration Offers a Lesson on Diversification

Written by: Susan Smith (CFA) & John Smith (CFP)
Reviewed by:
Rob Santos
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Rob Santos

Chief Executive Officer

As CEO and founder of Arrowroot Family Office, I specialize in the overall management of the firm. I also work with affluent families on providing bespoke family office services, which include tax-efficient advisory and financial planning, M&A advisory, family governance and process advisory, and philanthropic initiatives.

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The S&P 500’s Concentration Offers a Lesson on Diversification​
The S&P 500’s Concentration Offers a Lesson on Diversification​

he odds are high that you have read or heard about artificial intelligence or Chat GPT this year. In the stock market, there is a small group of stocks known as the “7 Tech Titans”, which includes leading technology firms exposed to the AI theme. The group of stocks has significantly outperformed this year due to growing excitement about AI, which has in turn increased its weight in the S&P 500. The five largest companies in the S&P 500, which are all part of the 7 Tech Titans, account for 22% of the entire index’s total market capitalization. These five companies include Apple, Microsoft, Amazon, NVIDIA, and Alphabet (the parent company of Google).

The S&P 500 is now highly concentrated, surpassing the previous record set in December 1999. In that era, Microsoft, General Electric, Cisco, Walmart, and Intel collectively represented around 19% of the S&P 500. How have those five stocks fared since 2000? Figure 1 shows their combined weight in the S&P 500 has declined over time, while the weight of today’s five largest stocks has steadily increased. Figure 2 shows the five stocks have produced an average total return of 216% since 2000, compared to the S&P 500’s return of 349%. At an individual stock level, only one out of the five stocks managed to outperform the S&P 500 over the past two decades.

The two charts highlight the importance of diversification. In both instances, the high concentration resulted from the outperformance of a small group of stocks. However, the return data in Figure 2 shows that today’s winners are not necessarily tomorrow’s winners. Diversifying your stock holdings across different sectors and companies can help manage this risk. It’s also important to diversify across bonds, real estate, and other asset classes, as well as regularly rebalance your portfolio to avoid concentration risk like the S&P 500. Financial markets are constantly changing, and owning a portfolio that is diversified across asset classes can help smooth returns over time and decrease overall portfolio risk. Our goal is to help you create a well-balanced investment portfolio that aligns with your financial goals and risk tolerance.

This material contains opinions of the author, but not necessarily those of Arrowroot Family Office LLC or its subsidiaries. The opinions contained herein are subject to change without notice. Forward looking statements, estimates, and certain information contained herein are based upon proprietary and non-proprietary research and other sources. Information contained herein has been obtained from sources believed to be reliable, but are not assured as to accuracy. No part of this material may be reproduced or referred to in any form, without express written permission of Arrowroot Family Office, LLC. There is neither representation nor warranty as to the current accuracy of, nor liability for, decisions based on such information. Past performance is not indicative of future results.
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  • 4553 Glencoe Ave, Suite 200, Marina del Rey, CA 90292
    (833) 224-2249
  • 2 Boars Head Ln, Suite 110, Charlottesville, VA 22903
    (626) 712-2090
  • 1107 Investment Blvd, Suite 160 El Dorado Hills, CA 95762
    (916) 384-0050
  • 725 Barclay Circle, Suite 215, Rochester Hills, MI 48307
    (248) 453-5252
  • 950 Broadway, Suite M100, Tacoma WA 98402
    (253) 858-2427
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Arrowroot Family Office LLC is a registered investment adviser with the U.S. Securities and Exchange Commission (“SEC”). Registration with the SEC does not constitute an endorsement by the SEC, nor does it imply that AFO has attained a certain level of skill or ability. Content should not be construed as legal or tax advice, AFO is not engaged in the practice of law or accounting.


AFO Form ADV (Part 2A & Part 2B)

AFO – ADV Part 3 Form CRS

    Terms & Condition | Privacy Policy | Web Accessibility

Copyright © 2025 Arrowroot Family Office – All rights reserved.

  • 4553 Glencoe Ave, Suite 200, Marina del Rey, CA 90292
    (833) 224-2249
  • 2 Boars Head Ln, Suite 110, Charlottesville, VA 22903
    (626) 712-2090
  • 1107 Investment Blvd, Suite 160 El Dorado Hills, CA 95762
    (916) 384-0050
  • 725 Barclay Circle, Suite 215, Rochester Hills, MI 48307
    (248) 453-5252
  • 950 Broadway, Suite M100, Tacoma WA 98402
    (253) 858-2427

Services

  • Investment Management
  • 529 Plan
  • IRA
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  • 401(k)
  • Corporate retirement
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Newsletter

Arrowroot Family Office LLC is a registered investment adviser with the U.S. Securities and Exchange Commission (“SEC”). Registration with the SEC does not constitute an endorsement by the SEC, nor does it imply that AFO has attained a certain level of skill or ability. Content should not be construed as legal or tax advice, AFO is not engaged in the practice of law or accounting.

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