Barry Ritholtz returns to the Rational Reminder podcast to discuss the biggest mistakes investors make—and why avoiding them may matter more than finding the next great investment. Drawing on decades of experience in markets, wealth management, and financial media, Barry explains why forecasting consistently fails, how investors can distinguish good advice from noise, and why humility, probabilistic thinking, and disciplined behavior are among the most valuable investing skills.

Throughout the conversation, Barry shares lessons from his new book, How Not to Invest, covering everything from media consumption and behavioral biases to index investing, portfolio concentration, market cycles, and choosing a financial advisor. He explains why experts are often better at providing context than making predictions, why social media amplifies poor financial advice, and how investors can build processes that help them stay disciplined through uncertainty. The discussion blends academic research, practical experience, and memorable stories into a comprehensive guide for becoming a better long-term investor.

Key Points From This Episode:

(0:04) Cameron and Ben welcome Barry Ritholtz back to the podcast and discuss his new book, How Not to Invest.

(4:12) Why successful billionaires often make poor economic forecasters and how the halo effect leads people to overestimate expertise.

(6:39) Why Wall Street professionals are generally poor at forecasting future market returns despite their domain expertise.

(7:42) What experts are actually good at: providing context, historical perspective, and nuanced analysis rather than predicting the future.

(8:47) Barry's checklist for identifying bad financial advice, including emotional appeals, false certainty, and conflicts of interest.

(10:35) How social media algorithms reward outrage and overconfidence instead of thoughtful investing.

(11:21) Why 24/7 financial news encourages unnecessary action that often hurts long-term investment returns.

(12:17) Why long-term investors are often better off ignoring financial news altogether.

(13:52) How short-form financial content on platforms like TikTok encourages misinformation and poor investing decisions.

(15:22) Gell-Mann Amnesia and why investors should remain skeptical even of trusted news sources.

(18:00) How reading books, consuming long-form content, and building a trusted information network improves decision making.

(20:21) Barry's definition of investing as making probabilistic decisions with imperfect information in an unknowable world.

(22:55) How successful investors focus on controlling savings, asset allocation, discipline, and behavior instead of unpredictable events.

(24:52) Why recognizing the limits of your own knowledge is one of investing's greatest advantages.

(26:30) How experience, losses, and continuous learning help investors become more self-aware.

(27:16) Three ideas that heavily influence Barry's investment philosophy: Sturgeon's Law, George Box's models, and William Goldman's "Nobody knows anything."

(30:18) Whether artificial intelligence changes Sturgeon's Law that "90% of everything is crap."

(31:46) Three forms of economic innumeracy that lead investors astray: denominator blindness, survivorship bias, and misunderstanding compounding.

(36:04) Why understanding secular bull and bear markets is useful psychologically—but not as a timing strategy.

(39:12) Why investors should understand market cycles without attempting to trade around them.

(40:44) What stock valuations can—and cannot—tell investors about future returns.

(42:18) How investors should respond to wars, pandemics, and other major external events.

(45:53) The biggest investing lessons from the COVID-19 market crash and why personal experience often differs from market performance.

(49:04) Why index investing remains one of the most reliable approaches to long-term wealth creation.

(50:44) Why every market forecast should be expressed probabilistically rather than with certainty.

(52:06) The lies traders tell themselves and why disciplined risk management separates successful professionals.

(56:11) What active investors need if they hope to consistently outperform.

(57:24) The biggest behavioral mistakes investors make, including lack of planning, excessive concentration, and ignoring taxes.

(59:43) Why concentrated stock positions become dangerous—even after creating substantial wealth.

(1:02:33) How sudden wealth and large financial windfalls frequently lead to costly mistakes.

(1:05:14) How to identify trustworthy financial advisors by evaluating their process, temperament, and communication.

(1:07:27) Why advisors who consistently communicate their thinking help investors avoid emotional mistakes.

(1:09:26) Barry's practical blueprint for becoming a better long-term investor: create a plan, invest consistently, define the purpose of money, and build around a diversified index portfolio.

Links From Today's Episode:

Meet with PWL Capital: https://calendly.com/d/3vm-t2j-h3p

Rational Reminder on iTunes — https://itunes.apple.com/ca/podcast/the-rational-reminder-podcast/id1426530582.
Rational Reminder on Instagram — https://www.instagram.com/rationalreminder/

Rational Reminder on YouTube — https://www.youtube.com/channel/
Benjamin Felix — https://pwlcapital.com/our-team/

Benjamin on X — https://x.com/benjaminwfelix

Benjamin on LinkedIn — https://www.linkedin.com/in/benjaminwfelix/

Editing and post-production work for this episode was provided by The Podcast Consultant (https://thepodcastconsultant.com)

Barry Ritholtz: "90% of financial products are crap" | #421

The Rational Reminder Podcast

Barry Ritholtz: "90% of financial products are crap" | #421