TY - JOUR AU - Cohen,Randolph B. AU - Polk,Christopher AU - Vuolteenaho,Tuomo TI - The Value Spread JF - National Bureau of Economic Research Working Paper Series VL - No. 8242 PY - 2001 Y2 - April 2001 UR - http://www.nber.org/papers/w8242 L1 - http://www.nber.org/papers/w8242.pdf N1 - Author contact info: Randolph Cohen MIT E-Mail: rbcohen@mit.edu Christopher Polk Department of Finance London School of Economics Houghton St. London WC2A 2AE UK Tel: +44 (0)20 7849 4917 Fax: +44 (0)20 7852 3580 E-Mail: c.polk@lse.ac.uk Tuomo Vuolteenaho Arrowstreet Capital 200 Clarendon Street #30 Boston, MA 02116-5021 Tel: 617/496-6284 Fax: 617/495-8570 E-Mail: tvuolteenaho@arrowstreetcapital.com AB - We decompose the cross-sectional variance of firms' book-to-market ratios using both a long U.S. panel and a shorter international panel. In contrast to typical aggregate time-series results, transitory cross-sectional variation in expected 15-year stock returns causes only a relatively small fraction (20%) of the total cross-sectional variance. The remaining dispersion can be explained by expected 15-year profitability and persistence of valuation levels. Furthermore, this fraction appears stable across time and across types of stocks. We also show that the expected return on value-minus-growth strategies is atypically high at times when the value spread (the difference between the book-to-market ratio of a typical value stock and a typical growth stock) is wide. ER -