Greenstream

Understanding Factor Investing


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Whether you know it or not, every investor's portfolio takes factor bets. In Episode 26 of Greenstream, we break down what factor investing actually is and how it is used as a framework for understanding risk, diversification, and portfolio construction.

You’ll learn:

  • Why factor returns are expected, not guaranteed
  • Why stocks vs. bonds is the original (and one of the biggest) factors bet investors make
  • How factor investing helps distinguish between true manager skill and simply taking more risk to generate performance
  • This episode builds directly on Episode 25, Is Indexing the Best You Can Do?, where we explored why even index investing involves active decisions and why implementation matters.

     

    Chapters

    00:00 — Understanding Factor Investing(1)

    Every portfolio reflects factor choices, whether investors realize it or not.

    02:17 — What Is Factor Investing and What It Isn’t (1-3)

    Factor investing means intentionally deviating from market weights to target groups of investments with shared risk and return characteristics, not chasing outperforming stocks.

    06:07 — Why Factor Returns Are Expected, Not Promised

    Factor premiums improve long-term odds, but they are uncertain, volatile, and can underperform the market for long stretches.

    12:02 — Why Stocks vs Bonds Is the Original Factor Bet (1)

    The most widely accepted factor is the market itself: stocks have higher expected returns than bonds, and every investor chooses their exposure.

    18:29 — Size and Value: Long-Term Evidence and Tradeoffs (2-3)

    Smaller and cheaper companies have historically offered higher expected returns, but only for investors willing to tolerate discomfort and tracking error.

    30:29 — Momentum: Why Trends Exist (4)

    Momentum appears consistently in market data, but high turnover, costs, and behavioral challenges make it difficult to capture in practice.

    33:44 — Quality: Profitability, Balance Sheets, and Staying Power (5)

    More profitable companies tend to deliver better outcomes when controlling for size and valuation, helping refine factor exposure.

    37:38 — When More Factors Don’t Help

    Beyond the core factors, many proposed premiums add complexity and cost without meaningfully improving diversification or returns.

    40:40 — Common Critiques of Factor Investing (6)

    Skepticism often stems from recent underperformance, volatility, and the discomfort of looking different from the market.

    46:05 — How Investors Actually Implement Factor Tilts

    Practical implementation starts with understanding current exposures and making thoughtful, diversified adjustments over time.

    50:56 — Closing: Better Questions, Not Better Predictions

    Factor investing isn’t about forecasting winners, it’s about improving decision quality and long-term odds.

     

    Follow on Apple Podcasts: https://podcasts.apple.com/us/podcast/greenstream/id1795467982

    Follow on Spotify: https://open.spotify.com/show/26NYX6WD7godcJAYVE0Yk8?si=Qxj-H7HiRdGmbNlW8uuV9g

    Subscribe for Email Updates: https://greenspringadvisors.com/greenstream-podcast

    Meet with Pat & Marcus: https://outlook.office365.com/book/MarcusCalendaratGreenspringAdvisors@Greenspringos33.onmicrosoft.com

     

    Sources

    1. Capital Asset Prices: A Theory of Market Equilibrium under Conditions of Risk (Sharpe, 1964)
    2. The Cross-Section of Expected Stock Returns (Fama & French, 1992)
    3. Common Risk Factors in the Returns on Stocks and Bonds (Fama & French, 1993)
    4. Returns to Buying Winners and Selling Losers (Jegadeesh & Titman, 1993)
    5. The Other Side of Value: The Gross Profitability Premium (Novy-Marx, 2013)
    6. Expected Returns (Ilmanen, 2011)
    7. Information contained herein has been obtained from sources considered reliable, but its accuracy and completeness are not guaranteed. It is not intended as the primary basis for financial planning or investment decisions and should not be construed as advice meeting the particular investment needs of any investor. This material has been prepared for information purposes only and is not a solicitation or an offer to buy any security or instrument or to participate in any trading strategy. Past performance is no guarantee of future results.

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      GreenstreamBy Greenspring Advisors

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