Unverified50% confidenceFactExact time
幸存者偏差是指股票池只包含当前仍交易的股票而排除已退市、被收购或被ST的公司，导致回测收益被系统性高估
1
Sources
50%
Confidence
Long-term
Relevance
7/21/2026
First Seen
Sources
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