TY - JOUR AU - Cochrane,John H. TI - Explaining the Variance of Price Dividend Ratios JF - National Bureau of Economic Research Working Paper Series VL - No. 3157 PY - 1992 Y2 - July 1992 UR - http://www.nber.org/papers/w3157 L1 - http://www.nber.org/papers/w3157.pdf N1 - Author contact info: John H. Cochrane Booth School of Business University of Chicago 5807 S. Woodlawn Chicago, IL 60637 Tel: 773/702-3059 Fax: 773/702-0458 E-Mail: john.cochrane@chicagobooth.edu AB - This paper presents a bound on the variance of the price-dividend ratio and a decomposition of the variance of the price-dividend ratio into components that reflect variation in expected future discount rates and variation in expected future dividend growth. Unobserved discount rates needed to make the variance bound and variance decomposition hold are characterized, and the variance bound and variance decomposition are tested for several discount rate models, including the consumption based model, and models based on interest rates plus a constant risk premium. ER -