FINANCEWeeks to result

Survivorship Bias Framework

Don't be fooled by success stories

Problem it solves

poor financial decisions

Best for

Individual investors

Not ideal for

Professional investors with access to proprietary information

Overview

Why this framework exists

The Survivorship Bias Framework helps individuals recognize and avoid the pitfall of survivorship bias when evaluating investment opportunities. It highlights the importance of considering the entire pool of investments, including those that have failed, rather than just focusing on the successful ones. By understanding this concept, individuals can make more informed investment decisions and avoid being misled by cherry-picked success stories.

Core principles

3 total
  1. Consider the entire pool of investments, including those that have failed.
  2. Be cautious of cherry-picked success stories.
  3. Evaluate investment opportunities based on their overall performance, not just their successful outcomes.

Steps

3 steps
  1. Recognize the existence of survivorship bias
    Understand that survivorship bias can lead to misleading conclusions about investment opportunities. Be aware that financial companies may selectively present successful funds or investments, while omitting those that have failed.
    Pro tipLook for independent reviews and evaluations of investment opportunities.
    WarningDon't rely solely on success stories or testimonials when making investment decisions.
  2. Evaluate the entire pool of investments
    Consider all investments, including those that have failed, to get a comprehensive understanding of their performance. This will help you avoid being misled by cherry-picked success stories.
    Pro tipUse independent research and data to evaluate investment opportunities.
    WarningBe cautious of investments with unusually high returns, as they may be due to luck rather than skill.
  3. Assess the investment opportunity critically
    Evaluate the investment opportunity based on its overall performance, not just its successful outcomes. Consider factors such as fees, risk, and potential returns.
    Pro tipUse a critical thinking approach to evaluate investment opportunities.
    WarningDon't invest in something that you don't fully understand.

Checklist

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Examples

2 cases
Mutual fund performance

A mutual fund company presents a selection of their most successful funds, while omitting those that have failed. An individual investor, unaware of survivorship bias, may be misled into investing in these funds based on their seemingly impressive performance.

OutcomeThe individual investor may end up losing money due to the poor performance of the omitted funds.
Stock-picking record

A financial adviser claims to have a perfect stock-picking record, but fails to disclose that they have only presented a selection of their successful picks. An individual investor, unaware of survivorship bias, may be misled into investing with this adviser based on their seemingly impressive record.

OutcomeThe individual investor may end up losing money due to the poor performance of the omitted picks.

Common mistakes

3 traps
Ignoring the existence of survivorship bias
Failing to recognize the existence of survivorship bias can lead to misleading conclusions about investment opportunities.
Relying solely on success stories
Relying solely on success stories or testimonials can lead to poor investment decisions, as they may not be representative of the entire pool of investments.
Failing to evaluate the entire pool of investments
Failing to evaluate the entire pool of investments can lead to a lack of understanding of the investment opportunity's overall performance.

Origin story

How this framework came to be

The concept of survivorship bias has been discussed by various experts, including Burton G. Malkiel, who wrote about it in his book 'A Random Walk Down Wall Street'. Ramit Sethi also discusses this concept in his book, emphasizing its relevance to individual investors.

Source

Traced to primary
Source · BOOK
I Will Teach You to Be Rich, Second Edition: No Guilt. No Excuses. No B.S. Just a 6-Week Program That Works.
Ramit Sethi · 2019
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