The Devil in HML's Details

Abstract:     
This paper challenges the standard method for measuring “value” used in academic work on factor pricing and behavioral finance. The standard method calculates book-to-price (B/P) at portfolio formation using lagged book data, aligns price data using the same lag (ignoring recent price movements), and hold these values constant until the next rebalance. We propose two simple alternatives that use timely price data while retaining the necessary lag for measuring book. We construct portfolios based on the different measures for a US sample (1950-2011) and an International sample (1983-2011). We show that B/P ratios based on timely prices better forecast true (unobservable) B/P ratios at fiscal yearend. Value portfolios based on the most timely measures earn statistically significant alphas ranging between 305 and 378 basis point per year against a 5-factor model itself containing the standard measure of value, as well as market, size, momentum and a short term reversal factor.

Number of Pages in PDF File: 50

Keywords: Value, momentum

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