Dimensional at 40: Timeless Lessons from My Decades in Finance
Gambling is a short-term bet. If you treat the market like a casino, and you’re picking stocks or timing the market, you need to be right twice—in an aim to buy low and sell high. Fama showed that it’s unlikely for any individual to be able to pick the right stock at the right time—especially more than once.2 Investing, on the other hand, is long term. While all investments have risk, there are things you can do as a long-term investor to manage those risks and be prepared. As my dear friend and Nobel laureate Merton Miller said, “Diversification is your buddy.” Investing, to me, is buying a little bit of almost every company and holding them for a long time. The only bet you’re making is on human ingenuity to find productive solutions to the world’s problems.
Over the past 100 years, the US stock market, as measured by the S&P 500, has returned a little over 10% on average per year but hardly ever close to 10% in any given year. The same is true of dozens of other markets around the world that have delivered strong long-term average returns. Stock market behavior is uncertain, just like most things in our lives. None of us can make uncertainty disappear, but dealing thoughtfully with uncertainty can make a huge difference in our investment returns, and even more importantly, our quality of life.
The way to deal with uncertainty is to prepare for it. Without uncertainty, there would be no opportunity to do better than a relatively riskless return like that from a money market fund. We always emphasize that risk and expected returns are related, which means you can’t have more of one without more of the other. Make the best-informed choices you can, then monitor performance and make portfolio adjustments as necessary. Come up with a plan to get back on track in case things don’t go as expected. And remember, you can’t control markets, so don’t blame yourself for results outside your control—try to relax knowing you’ve made the best-informed choices you can. A trusted financial advisor, a fiduciary who puts your interests first, can help you cultivate this sort of discipline and long-term perspective.
I was compelled to approach investing differently by the research Fama and other leading academics were doing to better understand markets and returns. There’s general agreement on what financial science tells us, yet so much can be gained or lost in application. Just as some sports teams can consistently execute their strategies better than others, investment professionals can consistently add value by dealing better with market mechanics.
Bob Merton, our colleague, and Myron Scholes, an Independent Director of the US mutual funds, were recognized as Nobel laureates for their options-pricing model, which shows that flexibility has value. Great implementation requires paying attention to detail, applying judgment, and being flexible. That’s what we’ve built our firm to do. We start with a fairly simple notion about markets and expected returns, and the real value comes from how we implement those ideas every day. It’s important to us that clients understand we’re advocating for them along every step in the investment process. What do we mean by “advocating?” That when it comes to implementation, the little things add up. We fight for every basis point, never forgetting that we’re investing money our clients have worked lifetimes to save.
If an investment sounds too good to be true, it probably is. When people ask me if I’m investing in the latest shiny investment idea, I tell them, “If I don’t understand something, I don’t invest in it.” That’s because I’ve seen a lot of fads come and go.
TV pundits handing out stock tips? Friends letting friends in on their next big investment? I see these more as entertainment than information. Stress is induced when people think that they can time markets or find the next winning stock, or that they can hire people who can. There is no compelling evidence that professional stock pickers can consistently beat the markets.3 Even after one outperforms, it’s difficult to determine whether a manager was skillful or lucky.
The good news is you can still do well without having to find what markets might have missed. While markets are unpredictable and may even seem chaotic at times, they have an underlying order. Buyers and sellers come together and trade, which is the activity that sets market prices. Unless each side agrees to a price, they don’t trade. New information and expectations about returns are quickly incorporated. Consistently finding big winners is difficult, but everybody can have access to the expected returns that a diversified, low-cost portfolio can generate.
It can be difficult to stay the investment course during periods of extreme market volatility. At the end of March 2020, the S&P 500 was down nearly 20% for the year.4 Record amounts of money exited from equity mutual funds and went into money market accounts. Those investors who stayed out of the equity market missed out on the subsequent 56% gain in the S&P 500 over the next 12 months. We will all remember 2020 for the rest of our lives. It serves as an example of how important it is to maintain discipline and stick to your plan.
By learning to embrace uncertainty, you can also focus more on controlling what you can control. You can make an impact on how much you earn, how much you spend, how much you save, and how much risk you take. This is where a professional you trust can really help. Discipline applied over a lifetime can have a powerful impact.
These are the ideas upon which we’ve built our firm. Back when we started, we thought there was a better way to invest than what was on offer. We all shared a philosophy about markets and how they work. We believed that the transparency of markets and the way they incorporate all available information in real time could make investing fair to all. We believed we could add value—not just to the bottom line, but by helping change the industry for the good of all investors. We saw a better way, and we got to work.
I’m so proud of what everyone at the firm has worked together to achieve, not only building a successful business but also providing investment solutions to families and institutions around the world. That continues to be what guides us—bettering the investment and client experience and sharing all we’ve learned with those we serve. It’s what we have done for the last 40 years and what we’ll continue to do every year going forward.
Download David Booth’s five timeless lessons for every investor as a one-page PDF. Download the PDF
- 1As of December 31, 2020, Dimensional had $601B in firmwide assets under management, USD (in billions)
- 2Fama, Eugene F., and Kenneth R. French. 2010. “Luck versus Skill in the Cross-Section of Mutual Fund Returns.” Journal of Finance 65(5): 1915–1947.
- 3For details, see Dimensional Fund Advisors’ Mutual Fund Landscape report.
4S&P data © 2021 S&P Dow Jones Indices LLC, a division of S&P Global. All rights reserved.
Indices are not available for direct investment. Index returns are not representative of actual portfolios and do not reflect costs and fees associated with an actual investment. Decrease of 19.6% was from January 1, 2020–March 31, 2020. Increase of 56.35% was from March 31, 2020–March 31, 2021.
Facebook, Amazon, Apple, Netflix, and Google are often referred to as the FAANG stocks.
Named securities may be held in accounts managed by Dimensional. This information should not be considered a recommendation to buy or sell a particular security.
Eugene Fama is a member of the Board of Directors for and provides consulting services to Dimensional Fund Advisors LP.
Myron Scholes is an Independent Director of the Dimensional US Mutual Fund Board.
Robert Merton is a consultant to Dimensional Fund Advisors LP.
“Dimensional” refers to the Dimensional separate but affiliated entities generally, rather than to one particular entity. These entities are Dimensional Fund Advisors LP, Dimensional Fund Advisors Ltd., Dimensional Ireland Limited, DFA Australia Limited, Dimensional Fund Advisors Canada ULC, Dimensional Fund Advisors Pte. Ltd., Dimensional Japan Ltd., and Dimensional Hong Kong Limited. Dimensional Hong Kong Limited is licensed by the Securities and Futures Commission to conduct Type 1 (dealing in securities) regulated activities only and does not provide asset management services.
The securities identified do not represent all securities purchased or sold for client accounts. It should not be assumed that an investment in the securities identified was or would be profitable. This information should not be considered a recommendation to buy or sell a particular security.
UNITED STATES: Dimensional Fund Advisors LP is an investment advisor registered with the Securities and Exchange Commission.
CANADA: April 2021. These materials have been prepared by Dimensional Fund Advisors Canada ULC.
Commissions, trailing commissions, management fees, and expenses all may be associated with mutual fund investments. Unless otherwise noted, any indicated total rates of return reflect the historical annual compounded total returns, including changes in share or unit value and reinvestment of all dividends or other distributions, and do not take into account sales, redemption, distribution, or optional charges or income taxes payable by any security holder that would have reduced returns. Please read the prospectus before investing. Mutual funds are not guaranteed, their values change frequently, and past performance may not be repeated.
AUSTRALIA and NEW ZEALAND: This material is issued by DFA Australia Limited (AFS License No. 238093, ABN 46 065 937 671). This material is provided for information only. No account has been taken of the objectives, financial situation or needs of any particular person. Accordingly, to the extent this material constitutes general financial product advice, investors should, before acting on the advice, consider the appropriateness of the advice, having regard to the investor’s objectives, financial situation and needs. Any opinions expressed in this material reflect our judgement at the date of publication and are subject to change.
WHERE ISSUED BY DIMENSIONAL IRELAND LIMITED OR DIMENSIONAL FUND ADVISORS LTD.
Neither Dimensional Ireland Limited (DIL) nor Dimensional Fund Advisors Ltd. (DFAL), as applicable (each an “Issuing Entity,” as the context requires), give financial advice. You are responsible for deciding whether an investment is suitable for your personal circumstances, and we recommend that a financial adviser helps you with that decision.
NOTICE TO INVESTORS IN SWITZERLAND: This is an advertising document.
WHERE ISSUED BY DIMENSIONAL IRELAND LIMITED
Issued by Dimensional Ireland Limited (DIL), with registered office 10 Earlsfort Terrace, Dublin 2, D02 T380, Ireland. DIL is regulated by the Central Bank of Ireland (Registration No. C185067). Information and opinions presented in this material have been obtained or derived from sources believed by DIL to be reliable, and DIL has reasonable grounds to believe that all factual information herein is true as at the date of this document.
DIL issues information and materials in English and may also issue information and materials in certain other languages. The recipient’s continued acceptance of information and materials from DIL will constitute the recipient’s consent to be provided with such information and materials, where relevant, in more than one language.
WHERE ISSUED BY DIMENSIONAL FUND ADVISORS LTD.
Issued by Dimensional Fund Advisors Ltd. (DFAL), 20 Triton Street, Regent’s Place, London, NW1 3BF. DFAL is authorised and regulated by the Financial Conduct Authority (FCA). Information and opinions presented in this material have been obtained or derived from sources believed by DFAL to be reliable, and DFAL has reasonable grounds to believe that all factual information herein is true as at the date of this document.
DFAL issues information and materials in English and may also issue information and materials in certain other languages. The recipient’s continued acceptance of information and materials from DFAL will constitute the recipient’s consent to be provided with such information and materials, where relevant, in more than one language.
Investments involve risks. The investment return and principal value of an investment may fluctuate so that an investor’s shares, when redeemed, may be worth more or less than their original value. Past performance is not a guarantee of future results. There is no guarantee strategies will be successful.
Provided for institutional investors only. This document is deemed to be issued by Dimensional Japan Ltd., which is regulated by the Financial Services Agency of Japan and is registered as a Financial Instruments Firm conducting Investment Management Business and Investment Advisory and Agency Business. This material is solely for informational purposes only and shall not constitute an offer to sell or the solicitation to buy securities or enter into investment advisory contracts. The material in this article and any content contained herein may not be reproduced, copied, modified, transferred, disclosed, or used in any way not expressly permitted by Dimensional Japan Ltd. in writing. All expressions of opinion are subject to change without notice.
Dimensional Japan Ltd.
Director of Kanto Local Finance Bureau (FIBO) No. 2683
Membership: Japan Investment Advisers Association
FOR PROFESSIONAL INVESTORS IN HONG KONG.
This material is deemed to be issued by Dimensional Hong Kong Limited (CE No. BJE760) (“Dimensional Hong Kong”), which is licensed by the Securities and Futures Commission to conduct Type 1 (dealing in securities) regulated activities only and does not provide asset management services.
This material should only be provided to “professional investors” (as defined in the Securities and Futures Ordinance [Chapter 571 of the Laws of Hong Kong] and its subsidiary legislation) and is not for use with the public. This material is not directed to any person in any jurisdiction where (by reason of that person’s nationality, residence, or otherwise) the publication or availability of this material are prohibited or which would subject Dimensional Hong Kong (including its affiliates) or any of Dimensional Hong Kong’s products or services to any registration, licensing, or other such legal requirements within such jurisdiction or country. When provided to prospective investors, this material forms part of, and must be provided together with, applicable fund offering materials. This material must not be provided to prospective investors on a standalone basis. Before acting on any information in this material, you should consider whether it is suitable for your particular circumstances and, if appropriate, seek professional advice.
Unauthorized copying, reproducing, duplicating, or transmitting of this material are prohibited. This material and the distribution of this material are not intended to constitute and do not constitute an offer or an invitation to offer to the Hong Kong public to acquire, dispose of, subscribe for, or underwrite any securities, structured products, or related financial products or instruments nor investment advice thereto. Any opinions and views expressed herein are subject to change. Neither Dimensional Hong Kong nor its affiliates shall be responsible or held responsible for any content prepared by financial advisors. Financial advisors in Hong Kong shall not actively market the services of Dimensional Hong Kong or its affiliates to the Hong Kong public.
This material is deemed to be issued by Dimensional Fund Advisors Pte. Ltd., which is regulated by the Monetary Authority of Singapore and holds a capital markets services license for fund management.
This advertisement has not been reviewed by the Monetary Authority of Singapore. This information should not be considered investment advice or an offer of any security for sale. All information is given in good faith without any warranty and is not intended to provide professional, investment, or any other type of advice or recommendation and does not take into account the particular investment objectives, financial situation, or needs of individual recipients. Before acting on any information in this material, you should consider whether it is suitable for your particular circumstances and, if appropriate, seek professional advice. Dimensional Fund Advisors Pte. Ltd. does not accept any responsibility and cannot be held liable for any person’s use of or reliance on the information and opinions contained herein. Neither Dimensional Fund Advisors Pte. Ltd. nor its affiliates shall be responsible or held responsible for any content prepared by financial advisors.