TY - JOUR AU - Basak,Gopal K. AU - Jagannathan,Ravi AU - Ma,Tongshu TI - A Jackknife Estimator for Tracking Error Variance of Optimal Portfolios Constructed Using Estimated Inputs1 JF - National Bureau of Economic Research Working Paper Series VL - No. 10447 PY - 2004 Y2 - April 2004 UR - http://www.nber.org/papers/w10447 L1 - http://www.nber.org/papers/w10447.pdf N1 - Author contact info: Gopal K. Basak Indian Statistical Institute Kolkata 700108 India E-Mail: gkb@isical.ac.in Ravi Jagannathan Kellogg Graduate School of Management Northwestern University 2001 Sheridan Road Leverone/Anderson Complex Evanston, IL 60208-2001 Tel: 847/491-8338 Fax: 847/491-5719 E-Mail: rjaganna@northwestern.edu Tongshu Ma SUNY-Binghamton E-Mail: tma@binghamton.edu AB - We develop a jackknife estimator for the conditional variance of a minimum-tracking- error-variance portfolio constructed using estimated covariances. We empirically evaluate the performance of our estimator using an optimal portfolio of 200 stocks that has the lowest tracking error with respect to the S&P500 benchmark when three years of daily return data are used for estimating covariances. We find that our jackknife estimator provides more precise estimates and suffers less from in-sample optimism when compared to conventional estimators. ER -