TY - JOUR AU - Rendleman,Richard J., Jr. AU - Shackelford,Douglas A. TI - Diversification and the Taxation of Capital Gains and Losses JF - National Bureau of Economic Research Working Paper Series VL - No. 9674 PY - 2003 Y2 - May 2003 UR - http://www.nber.org/papers/w9674 L1 - http://www.nber.org/papers/w9674.pdf N1 - Author contact info: Douglas Shackelford University of North Carolina at Chapel Hill Kenan-Flagler Business School Campus Box 3490, McColl Building Chapel Hill, NC 27599-3490 Tel: 919/962-3197 Fax: 919/962-4727 E-Mail: doug_shack@unc.edu AB - Current U.S. law nets the total portfolio of realized capital gains and losses to compute capital gains taxes. Prior research, however, typically ignores the implication of this provision, i.e., the marginal tax rate for a specific gain or loss depends on the taxpayer's total portfolio of realized gains and losses. We find that these nettings introduce complexity into the relation between share values and capital gains taxes, creating an incentive to diversify. For firms with stock returns that are positively (negatively) correlated with those of the overall market, share values generally are decreasing (increasing) in the capital gains tax rate. ER -