Survivorship Bias Blind Spot in Backtesting #交易策略误区

Only studying existing trading instruments can severely overestimate returns. For example, when backtesting the TOP 10 cryptocurrency strategies from 2020 to 2023, if delisted projects (like LUNA) are not included, returns will be exaggerated by 300%. Rigorous approach: 1) Include all trading instruments during the same period; 2) Set up a "zombie coin" filter; 3) Use survival analysis models.