TY - JOUR AU - Froot,Kenneth A. TI - Currency Hedging over Long Horizons JF - National Bureau of Economic Research Working Paper Series VL - No. 4355 PY - 1993 Y2 - May 1993 UR - http://www.nber.org/papers/w4355 L1 - http://www.nber.org/papers/w4355.pdf N1 - Author contact info: Kenneth A. Froot Graduate School of Business Harvard University Soldiers Field Boston, MA 02163 Tel: 617/495-6677 Fax: 617/496-7357 E-Mail: kfroot@hbs.edu AB - This paper reexamines the widely-held wisdom that the currency exposure of international investments should be entirely hedged. It finds that the previously documented ability of hedges to reduce portfolio return variance holds at short horizons, but not at long horizons. At horizons of several years, complete hedging not only does not lower return variance, it actually increases the return variance of many portfolios. Hedge ratios chosen to minimize long-run return variance are not only low, they also have no perceptible impact on return variance. The paper reports and explores these results, their apparent causes, and investigates their implications for hedging practice. ER -