Thank you DavidHi @v.modaher Yes, the "(0.50)" is meant to convey a negative beta, otherwise denoted "-0.50" such that the unexpected return is given by (emphasis mine) the expression: 0.80*(2.0 - 1.0%) + (-0.50)*(1.0% - 1.0%) + 1.30*(1.5% - 0.5%). Thanks, David