“…This DV is multiplied by the market risk premium to form the interaction variable. Based on Ramiah et al ()'s study, the model to be estimated is expressed as follows:where is sector i 's return at time t, is the risk‐free rate at time t , is the returns of stocks within each sector at time t , DV is a DV that takes the value of one on the first day of trading following the election/Inauguration Day and zero otherwise, is the intercept of the regression equation [E () = 0], corresponds to the average short‐term systematic risk of the industry, corresponds to the change in the industry risk, and measures the intercept of Equation (), is the error term. The Equation () is estimated to identify the short‐term change in systematic risk of the US disaggregated stock markets.…”