Archive for October, 2009
what is the definition of "tracking error" in Asset Management Field?
Thursday, October 8th, 2009
Let X be your portfolio; let B be the chosen benchmark.
Then d=X-B is the portfolio of differences (which adds to zero)
then TE=std(d) is the tracking error. If you have a covariance matrix S for your assets, then
TE=((X-B)’S(X-B))^(1/2).
Tracking error “interpretation” is the uncertainty of the excess returns (that is, of the return of the portfolio vs the benchmark’s)
