The Impact of Capital Gains Taxes on Stock Price Reactions to S&P 500 Inclusion

32 Pages Posted: 18 Nov 2000 Last revised: 20 Sep 2012

See all articles by Jennifer Blouin

Jennifer Blouin

University of Pennsylvania - Accounting Department

Jana Smith Raedy

University of North Carolina at Chapel Hill

Douglas A. Shackelford

University of North Carolina Kenan-Flagler Business School; National Bureau of Economic Research (NBER)

Multiple version iconThere are 2 versions of this paper

Date Written: November 2000

Abstract

This paper contributes to our understanding of the determinants of price responses to inclusion in the S&P 500 by providing evidence consistent with capital gains tax planning impacting stock reactions. Tests are conducted on 426 additions from 1978-1999. We regress the returns on the first trading day following announcement on a capital gains tax measure and controls. The evidence is consistent with the share prices of appreciated firms being temporarily bid up to compensate individual shareholders for any unanticipated capital gains taxes triggered when they sell to index funds and the share prices of depreciated firms being temporarily diminished when individual shareholders sell because buyers and sellers share the tax savings associated with deductible capital losses. We infer from these findings that in rebalancing their portfolios after S&P 500 additions, index funds share individual shareholders' capital gains taxes (or tax savings) through sales price adjustments. Consistent with temporary price pressure, further analysis shows that much of the price reaction unwinds over the following week's trading. Finding that personal capital gains taxes affect stock returns in a setting that does not bias toward taxes mattering suggests that capital gains tax capitalization may be a pervasive feature in equity valuation.

Suggested Citation

Blouin, Jennifer and Smith Raedy, Jana and Shackelford, Douglas A., The Impact of Capital Gains Taxes on Stock Price Reactions to S&P 500 Inclusion (November 2000). NBER Working Paper No. w8011, Available at SSRN: https://ssrn.com/abstract=250366

Jennifer Blouin (Contact Author)

University of Pennsylvania - Accounting Department ( email )

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Jana Smith Raedy

University of North Carolina at Chapel Hill ( email )

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United States
919-962-7475 (Phone)
919-962-4727 (Fax)

Douglas A. Shackelford

University of North Carolina Kenan-Flagler Business School ( email )

Kenan-Flagler Business School
Chapel Hill, NC 27599-3490
United States
919-962-3197 (Phone)
919-962-4727 (Fax)

National Bureau of Economic Research (NBER)

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Cambridge, MA 02138
United States

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