De-Snooping Market Timing Rules Based on Fundamental and Sentiment Indicators
February 20, 2009 - Fundamental Valuation, Sentiment Indicators
…even though S&P 500 index timing rules based on fundamental indicators and investor sentiment indicators might significantly beat a buy-and-hold benchmark when evaluated in isolation, this outperformance generally evaporates after correcting for data snooping bias. In other words, luck is the dominant differentiator of rule performance.