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Reviewed by Nov 11, 2021| Updated on
Survivorship bias is a tendency of looking at the performance of securities as a comprehensive sample with no consideration of securities that have gone down. It can result in overestimating historical performance and other attributes of a fund or market index.
Survivorship bias is the most common singularity which leads to making the existing securities much transparent in the market, and hence it is considered as a representative sample.
Survivorship bias occurs when only the winners are considered, and the losers are not.
It can occur when evaluating mutual fund performance or market index performance.