Residuals from regression in style analysis

Hi,

I have the following the code. To check I have confronted the "res" that appread in the command window with the ones stored in "matrice residui" in the workspace. The last columns from "matrice_residui" seems to be identical to the last column of res, but not the first one. Any clue why this could be?

Thank you in advance.

%creo variabili per mettere i risultati della rolling
matrice_rolling=[1:4];
matrice_residui = [1:36];
matrice_residui = transpose(matrice_residui);



%stile analysis rolling di 36 mesi
for i=1:426
    %andando da 1 a 35+1, va da 1 a 36, che sono 36 periodi
    y = American_Fund_return_lungo(i:35+i,:);
    X = regressori (i:35+i,:);
    
    [rolling,a,res]=lsqlin(X,y,G,g,j,1);
    res
    rolling=rolling';
    matrice_rolling=[matrice_rolling;rolling];
    matrice_residui=[matrice_residui,res];
end