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Beware Changes in Firm Financial Reporting Practices?

Posted in Fundamental Valuation

Do changes in firm financial reporting practices signal bad news to come? In the February 2018 update of their paper entitled "Lazy Prices", Lauren Cohen, Christopher Malloy and Quoc Nguyen investigate relationships between changes in firm financial reporting practices (SEC 10-K, 10-K405, 10-KSB and 10-Q filings) and future firm/stock performance. They focus on quarter-to-quarter changes in content bases on four distinct textual similarity metrics. Each month, they rank all firms into fifths (quintiles) for each of the four metrics. They then compute equally weighted or value-weighted returns for these quintiles over future months (such that there are overlapping portfolios for each quintile and each metric), with stock weights within quintile portfolios rebalanced monthly for equal weighting. They measure the effect of changes in financial reporting practices as monthly return for a hedge portfolio that is long (short) the quintile with the smallest (greatest) past changes. Using the specified quarterly and annual SEC filings by U.S. corporations from the Electronic Data Gathering, Analysis, and Retrieval (EDGAR) database and corresponding monthly stock returns during 1995 through 2014, they find that:

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