Glossary · Performance and reporting
Survivorship bias
Survivorship bias is the distortion created when poorly performing accounts, funds or strategies are removed from a track record, leaving results that look better than the full record would.
It is rarely deliberate. Strategies get discontinued, accounts close, products are merged — and what remains is, by construction, the part that did well.
When evaluating any marketplace or manager list, ask what happens to a strategy that is removed.
Questions this did not answer? Ask them directly — that is what the twenty minutes is for.