Show Notes
Episode 29: What really drives the outcome of your investment portfolio—market performance or your own behavior? Investors often view returns as a purely quantitative result of markets, risk, timing, or expertise. Yet psychology tells a different story. Emotions and behavioral biases quietly shape decisions, frequently pushing investors away from their long-term goals. Any number of common biases can show up again and again in real life. For example, hindsight bias makes unpredictable events feel obvious after the fact, while the illusion of control leads investors to overestimate their ability to influence outcomes. Pattern-seeking behavior can cause people to see meaning in random data, and beliefs about reversion to the mean may encourage premature or poorly timed decisions. Others include confirmation bias and attribution bias (crediting skill for success but blaming markets for failure). The discussion goes further, examining deeper categories of bias. Encapsulated biases are emotionally driven and resistant to logic, while attentional biases cause investors to overlook critical information. Then there is the GI Joe fallacy—the false belief that simply knowing about biases is enough to overcome them. In Episode 29 of The Informed Investor, Dimensional's Mark Gochnour, Head of Global Client Services, Scott Bosworth, Head of the Speakers Bureau, and Jake DeKinder, Head of Client Communications, dive into behavioral finance—the study of how psychology impacts investor behavior—to explore how our emotions influence portfolio outcomes. Through academic research and real-world examples, they compare the narratives of disciplined investors and short-term speculators, offering a framework for bridging human behavior with market efficiency. LINKS FROM TODAY'S EPISODE: The Informed Investor: Feedback Survey https://www.dimensional.com/us-en/informed-investor-survey "The Informed Investor" on YouTube [update with live link] Dimensional Fund Advisors Shorts on YouTube https://www.youtube.com/@dimensionalfundadvisors/shorts Mark Gochnour on LinkedIn https://www.linkedin.com/in/mark-gochnour-9a23598a/ Jake DeKinder on LinkedIn https://www.linkedin.com/in/jake-d-4105b98/ Scott Bosworth on LinkedIn https://www.linkedin.com/in/sbosworth/ Learn more at https://www.dimensional.com/
More from The Informed Investor
Episode 61: The allure of index funds, such as broad diversification, low costs, and market-matching returns, may seem undeniable. But recent "reconstitution" in the indexes tracked by such funds tells a different story—one every investor should understand.
Episode 60: Every two years, millions of investors probably ask themselves (and their advisors) whether looming elections demand changes to their investment portfolios. It's an understandable sentiment—and one that demands discussion. But the most important conclusion from these conversations should never change: Since the data doesn't show any strong connection between election results and stock market performance, it's best to vote with your ballot, not your portfolio. No matter how you slice, dice, or take a hatchet to the data, factor in your own political proclivities, or scream about what you think is totally wrong or right about the candidates, market prices have already incorporated all that information (and thousands of other developments, including numerous economic indicators) as investors consider what to do next. This is a well-researched theory of how capital markets work. The implication is that the stock market doesn't really care what you think about this year's midterm elections or the next presidential horse race. Need supporting evidence? Fourteen of 17 presidential terms since 1929, across administrations with both Democratic and Republican chief executives, ended with positive returns for the S&P 500 Index. (S&P data © 2026 S&P Dow Jones Indices LLC, a division of S&P Global.) Investors shouldn't ignore elections, of course. But their portfolios may benefit from standing pat as politics rile and emotions rock and roll. In Episode 60 of The Informed Investor podcast, Dimensional's Mark Gochnour, Head of Global Client Services, Wes Crill, Senior Client Solutions Director, and Jake DeKinder, Head of Client Communications, interrogate common myths about the impact of elections on markets and offer sensible answers as investors head to the polls. LINKS FROM TODAY'S EPISODE: "Stay Calm: Learn to Embrace Uncertainty in Investing and Life" Order the new book by Dimensional Founder David Booth https://www.amazon.com/gp/product/B0GPDHGH8K/?maas=maas_adg_2F97289929AB0BA26D806A1F81D55D66_afap_abs&ref_=aa_maas&tag=maas&smid=ATVPDKIKX0DER Subscribe to the Stay Calm Investing Newsletter https://www.staycalminvesting.com/newsletter?utm_source=youtube&utm_medium=organic&utm_campaign=informed_investor The Informed Investor: Feedback Survey https://www.dimensional.com/us-en/informed-investor-survey?utm_source=youtube&utm_medium=organic&utm_campaign=informed_investor "The Informed Investor" on YouTube The Informed Investor - YouTube Dimensional Fund Advisors Shorts on YouTube https://www.youtube.com/@dimensionalfundadvisors/shorts Mark Gochnour on LinkedIn https://www.linkedin.com/in/mark-gochnour-9a23598a/ Wes Crill on LinkedIn https://www.linkedin.com/in/wes-crill-77a49417/ Jake DeKinder on LinkedIn https://www.linkedin.com/in/jake-d-4105b98/ Learn more at https://www.dimensional.com/?utm_source=youtube&utm_medium=organic&utm_campaign=informed_investor For US audiences: Select videos are available as part of an opportunity for CFP® and Investments & Wealth Institute® professionals to earn continuing education (CE) credits https://www.dimensional.com/financial-professionals/ce-credit-experience-d360?utm_source=youtube&utm_medium=organic&utm_campaign=informed_investor
Episode 59: What happens when you rethink how financial advice is delivered—and how an industry comes together?
Episode 58: Any financial professional who joined the industry a week after Black Monday—when the stock market suffered its biggest single-day loss—knows something about investment discipline.
Episode 57: How much of your portfolio should really be invested in alternatives? For ultra-high-net-worth investors and families, alternative investments have long been viewed as a path to diversification, exclusive access, and potentially higher returns. But are they always worth the complexity, illiquidity, fees, and taxes that come with them? We take a critical look at the world of alternatives—from hedge funds, private equity, and venture capital to private real estate and other non-public investments. We explore where returns actually come from, looking at the impact of enterprise risk, financial engineering, and manager skill, and examine whether those sources of return truly justify the additional costs and complexity. We also discuss the role of liquidity, diversification, taxation, manager selection, and investment purpose when evaluating alternatives. Are private investments genuinely less volatile, or do appraisal-based valuations simply make them look that way? And as access expands beyond institutions and ultra-wealthy families into vehicles such as 401(k) plans, are investors really gaining access to the same opportunities? Finally, we look at one of the original homes of alternative investing: endowments. If institutions with long time horizons, sophisticated investment teams, and access to top-tier managers have not consistently outperformed comparable public-market portfolios, what should individual investors conclude? In Episode 57 of The Informed Investor, Dimensional's Mark Gochnour, Head of Global Client Services, sits down with Jeff Coyle, founder and CEO of Libretto. The takeaway: Alternatives aren't inherently good or bad—they need to be deconstructed, evaluated, and compared against the public markets with a clear understanding of where the return comes from and what you're paying to get it. LINKS FROM TODAY'S EPISODE: Subscribe to the Stay Calm Investing Newsletter https://www.staycalminvesting.com/newsletter?utm_source=youtube&utm_medium=organic&utm_campaign=informed_investor The Informed Investor: Feedback Survey https://www.dimensional.com/us-en/informed-investor-survey?utm_source=youtube&utm_medium=organic&utm_campaign=informed_investor "The Informed Investor" on YouTube The Informed Investor - YouTube Dimensional Fund Advisors Shorts on YouTube https://www.youtube.com/@dimensionalfundadvisors/shorts Mark Gochnour on LinkedIn https://www.linkedin.com/in/mark-gochnour-9a23598a/ Jeff Coyle on LinkedIn https://www.linkedin.com/in/jeffcoylelibretto Learn more at https://www.dimensional.com/?utm_source=youtube&utm_medium=organic&utm_campaign=informed_investor For US audiences: Select videos are available as part of an opportunity for CFP® and Investments & Wealth Institute® professionals to earn continuing education (CE) credits https://www.dimensional.com/financial-professionals/ce-credit-experience-d360?utm_source=youtube&utm_medium=organic&utm_campaign=informed_investor