We Study Billionaires
We Study Billionaires

TIP437: Why Does The Stock Market Go Up? w/ Brian Feroldi

In today’s episode, Trey Lockerbie chats with Brian Feroldi. Brian Feroldi is a financial educator and a writer for the Motley Fool. Be sure to check out Episode 375 where Brian and Trey discussed how he creates an investing checklist. Brian has written a new book titled Why Does the Stock Market Go

Featured Speakers

Stig Brodersen HostBrian Feroldi Guest

Topics Discussed

Episode Summary

Executive Summary: Brian Feroldi explains core investing concepts in plain language: compounding, index construction, why markets rise over time, how valuations work, and why investors often act against their instincts. The conversation uses historical context and concrete examples to show how long-term ownership in productive businesses can build wealth, while also warning against common mistakes like chasing yields, mistaking account wrappers for investments, and trying to time the market.

Main Topics: Compounding and long-term wealth creation (Priority: 5/5): The discussion opens with the power of compounding and how small, consistent contributions to equities can grow dramatically over decades, especially when left untouched through market cycles. What major market indexes are and how they work (Priority: 5/5): Brian explains the Dow Jones Industrial Average, the S&P 500, and the NASDAQ Composite, including their origins, weighting methods, and why investors often prefer the S&P 500 as a benchmark. Why stock prices go up over time (Priority: 5/5): The stock market rises because public companies tend to grow profits through population growth, innovation, productivity, inflation, and reinvestment, which increases shareholder value over time. Why stock prices fall and the role of fear (Priority: 4/5): Bear markets are framed as the result of macro shocks and investor fear, where falling expectations about future profits trigger selling and reinforce declines. Valuation, earnings yield, and dividends (Priority: 4/5): The conversation breaks down the P/E ratio, how to invert it into earnings yield, and why dividend yield can be misleading if a company is under stress or overpaying relative to its fundamentals. Behavioral investing and avoiding common mistakes (Priority: 5/5): Brian stresses counterintuitive but effective habits: buy quality winners, be cautious with losers, avoid timing the market, and ensure retirement accounts are actually invested instead of sitting in cash. 401(k) history and account structure (Priority: 4/5): The episode ends with the origin story of the 401(k) and the important distinction between tax-advantaged account wrappers and the actual investments held inside them.

Key Arguments: Consistent investing into broad U.S. equities harnesses compounding to turn modest savings into millions over time. The Dow, S&P 500, and NASDAQ are shorthand tools for market performance, but they differ in construction, history, and weighting. The S&P 500 is a more representative benchmark than the Dow because it holds 500 companies and is market-cap weighted rather than price weighted. Stock ownership represents a claim on future profits, which is the main reason stocks rise over long horizons. Bear markets usually coincide with major macro shocks or collapsing investor confidence, which pressure valuation multiples and prices. High P/E ratios can be justified for growth companies if future earnings are expected to rise substantially, but the metric must be used with context. Dividend yields are not automatically attractive; extremely high yields often signal distress or unsustainable payouts. Investors should generally favor time in the market over trying to time market entries and exits. Winners often keep winning and losers often keep losing, so selling strength and averaging down indiscriminately can be costly. A 401(k), IRA, or Roth is only an account structure; money must still be invested inside the account to benefit from market growth.

Data Points: Berkshire B-share meeting credential eligibility: 1 Berkshire B-share (~$330) - Used in the opening housekeeping about attending the Berkshire Hathaway meeting. Maximum meeting credentials per shareholder: 4 - Each shareholder can receive up to four meeting credentials. Sally's total 401(k) contributions: $192,000 - A hypothetical worker contributing $400/month over 40 years. Sally's ending 401(k) value: $3.013 million - Value after 40 years investing in the U.S. stock market at average returns. Portfolio multiple: 15x - Sally's ending value was about 15 times her total contributions. Annualized market return mentioned: 10% to 11% - Approximate average annualized U.S. stock market return over the example period. Extra wealth from one additional year on $3 million: $300,000 - Illustrates how compounding magnifies returns later in life. Dow Jones Industrial Average constituents: 30 - Current number of companies in the Dow, expanded from the original 12. Original Dow Jones Industrial Average constituents: 12 - The Dow began with 12 industrial companies in 1896. S&P 500 constituents: 500 - Expanded in 1957 to better represent the market than the Dow. NASDAQ Composite constituents: ~3,200 - Estimated number of companies listed in the NASDAQ Composite at time of recording. Dow Jones level mentioned: 34,564 / 34,570 range - Used to explain that index levels are expressed in points, not basis points. Dow daily change: 86 to 88 points - Example of a headline-friendly point move on the day of recording. Dow daily percentage change: 0.5% - Shows why percentage context matters more than raw points. Bear market threshold: 20% or more decline - Standard definition from a recent high. Starbucks current valuation: $100 billion - Illustrative example of how a company can grow by reinvesting capital. Starbucks store count growth: ~200 to ~17,000 stores - Example used to show expansion and reinvestment over time. Smartphone adoption example: 0 in 1990 to 3 billion by 2020 - Used to illustrate innovation as a driver of market growth. Revenue from smartphone ecosystem: $700 billion+ - Referenced as the economic scale created by smartphones. SP 500 return when unemployment is under 5%: 3.9% annualized - Ben Carlson study cited to argue returns can be lower in good economic times. SP 500 return when unemployment is over 9%: 24.5% annualized - Ben Carlson study cited to argue returns can be higher during distress. Public market stock outcomes study: 40% fall 70%+ and stay down permanently - JP Morgan study discussed to show the prevalence of long-term losers. Public market stock outcomes study: ~25% underperform the market - JP Morgan study discussed as another category of stocks. Public market stock outcomes study: ~20%-30% outperform slightly - JP Morgan study discussed as middling winners. Public market stock outcomes study: ~7%-10% drive most market gains - JP Morgan study discussed as the small set of major winners. 401(k) assets mentioned: $7.5 trillion - Approximate total in 401(k) accounts as of June of the prior year.

Pivotal Quotes: "Money makes money, and the money that money makes money." — Brian Feroldi: Used to explain compounding and reinvestment as the engine of long-term wealth creation. "Winners tend to keep on winning and losers tend to keep on losing." — Brian Feroldi: Summary of his point on why investors should not reflexively buy losers and sell winners too early. "It’s not timing the market, it’s time in the market." — Trey Lockerbie: Referenced in the discussion of why investors should keep investing through uncertainty.

Implications: For listeners, the episode reinforces that wealth is built through patience, ownership, and disciplined reinvestment—not prediction. For the industry, it underscores the value of investor education, accessible benchmarks, and simplifying complex concepts without losing nuance.

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About We Study Billionaires

We interview and study famous financial billionaires, including Warren Buffett, Ray Dalio, and Howard Marks, and teach you what we learn and how you can apply their investment strategies in the stock market. We Study Billionaires is the largest stock investing podcast show in the world with 180,000,000+ downloads and is hosted by Stig Brodersen, Preston Pysh, William Green, Clay Finck, and Kyle Grieve. This podcast also includes the Richer Wiser Happier series hosted by best-selling author Wi...

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