where ri,t+1 is the return of stock i over the next month and rf,t+1 is the risk-free rate over the same period. To present our results, we annualize both ri,t+1 and rf,t+1. γC t andγControl t are the premia associated with moment persistence and there maining characteristics, respectively. Xi,t is a vector containing one or more of the control variables and i,t+1 is the error term. In a second step, we perform tests on the time-series averages of the estimated monthlyinterceptandslopecoefficientsinordertotestforthesignificanceofthepremiaover the sample period. Again, we control for potential heteroskedasticity and auto correlation by relying on Newey & West (1987) adjusted standard errors with 5 lags.13