Survivorship Bias Risk

Definition of 'Survivorship Bias Risk'


The possibility that an investor will make a misguided investment decision based on published investment fund return data that are unrealistically high because a company's poorly performing funds are closed and their returns are not included in the data. The danger is that the investor will not achieve the returns he anticipates because he has based his decision on incomplete and misleading information.

Investopedia explains 'Survivorship Bias Risk'


Survivorship bias risk is one of many reasons why investors should not rely too heavily on past returns to make their investment decisions. Other types of risk that investors might encounter are non-reporting bias risk (the danger that overall returns are misstated because some funds, likely the poorly performing ones, decline to report their returns) and instant history bias risk (the possibility that fund managers may choose to report performances to the public only when they have established a track record of success with a fund, while leaving out unsuccessful funds). In addition to past performance, investors should consider factors such as cost, risk, after-tax returns, volatility, relationship to benchmark performance and more.



comments powered by Disqus
Hot Definitions
  1. National Best Bid and Offer - NBBO

    A term applying to the SEC requirement that brokers must guarantee customers the best available ask price when they buy securities and the best available bid price when they sell securities.
  2. Maintenance Margin

    The minimum amount of equity that must be maintained in a margin account. In the context of the NYSE and FINRA, after an investor has bought securities on margin, the minimum required level of margin is 25% of the total market value of the securities in the margin account.
  3. Leased Bank Guarantee

    A bank guarantee that is leased to a third party for a specific fee. The issuing bank will conduct due diligence on the creditworthiness of the customer looking to secure a bank guarantee, then lease a guarantee to that customer for a set amount of money and over a set period of time, typically less than two years.
  4. Degree Of Financial Leverage - DFL

    A ratio that measures the sensitivity of a company’s earnings per share (EPS) to fluctuations in its operating income, as a result of changes in its capital structure. Degree of Financial Leverage (DFL) measures the percentage change in EPS for a unit change in earnings before interest and taxes (EBIT).
  5. Jeff Bezos

    Self-made billionaire Jeff Bezos is famous for founding online retail giant Amazon.com.
  6. Re-fracking

    Re-fracking is the practice of returning to older wells that had been fracked in the recent past to capitalize on newer, more effective extraction technology. Re-fracking can be effective on especially tight oil deposits – where the shale products low yields – to extend their productivity.
Trading Center