July 31st, 2003, 1:55 pm
hi, it seems that there r many ways to measure tracking error. Standard deviation of the difference betw the return of tracking portfolio and the benchmark is the one, the standard deviation of the risudual error( = sigma (RB)* sqrt(1- correl(RB,RP)) is another way. RB- the return of benchmark index, RP- the return of tracking portfolio. I am wondering the background of the 2nd formular and in what situation it is being used. I assume that the risudual error term is from the CAPM. RP= RB*Beta+Alpha+ ErrorCan anybody help?