每日钉一下（估值百分位，在哪些情况下可能会失效？）

Group 1 - The core concept of fund advisory is to address the issue where funds make profits, but investors do not [4] - Fund advisory services are designed to help investors achieve better returns through professional guidance [5] - The article promotes a free course on fund advisory, offering additional resources like course notes and mind maps for efficient learning [5][7] Group 2 - The article discusses the limitations of valuation percentiles in investment analysis, particularly in three scenarios [8] - Scenario one involves significant fluctuations in earnings, which can render the price-to-earnings (P/E) ratio percentile ineffective [10] - Scenario two highlights that newly established indices may not provide reliable valuation percentiles due to insufficient historical data [13] - Scenario three addresses changes in index rules that can significantly alter valuation metrics, necessitating a reevaluation of historical data [15]