Effectiveness of Stock Valuation Based on Accounting Variables
October 27, 2015 - Fundamental Valuation
Is fundamental valuation of stocks an inherently effective investment approach? In their October 2015 paper entitled “Fundamental Analysis Works”, Sohnke Bartram and Mark Grinblatt test whether fundamental valuation usefully predict stock performance. Each month, they estimate the fair value (market capitalization) of each stock based on linear regression versus the 28 most commonly reported firm accounting variables (14 from the balance sheet and 14 from the income statement), thereby avoiding snooping of specific indicators. They then rank stocks into fifths (quintiles) based on the degree to which the market misprices them (percentage difference between actual market capitalization and estimated fair value). Finally, they measure the profitability of a monthly reformed portfolio that buys (sells) the most undervalued (overvalued) quintile. Using monthly accounting data as available from Forms 10-Q/10-K and prices for a broad sample of non-financial U.S. common stocks during January 1977 through December 2012 (432 months), they find that: Keep Reading