Garrett, Ian; Kamstra, Mark; Kramer, Lisa - 2004
determine whether the seasonality can be explained using a conditional version of the capital asset pricing model (CAPM) that … allows the price of risk to vary over time. Using daily and monthly data for the United States, Sweden, New Zealand, the … United Kingdom, Japan, and Australia, the authors find that a conditional CAPM that allows the price of risk to vary in …