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Market Reaction to Changes in the S&P SmallCap 600 Index

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  • S. Gowri Shankar
  • James M. Miller

Abstract

Firms added to (deleted from) the S&P 600 index experience a significant price increase (decrease) at announcement. Firms that newly enter (exit) the S&P universe experience a larger price increase (decrease) than firms that move between S&P indexes. Trading volumes are higher after the announcement and institutional ownership increases (decreases) following index additions (deletions). However, the price and volume effects are temporary and are fully reversed within 60 days, in contrast to the permanent effects reported for S&P 500 changes. Our results support the temporary price-pressure hypothesis and are similar to results reported for Russell 2000 index changes. Copyright 2006, The Eastern Finance Association.

Suggested Citation

  • S. Gowri Shankar & James M. Miller, 2006. "Market Reaction to Changes in the S&P SmallCap 600 Index," The Financial Review, Eastern Finance Association, vol. 41(3), pages 339-360, August.
  • Handle: RePEc:bla:finrev:v:41:y:2006:i:3:p:339-360
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    Cited by:

    1. repec:eee:finana:v:52:y:2017:i:c:p:228-239 is not listed on IDEAS
    2. Gonul Colak, 2012. "IPO characteristics of index firms," Managerial Finance, Emerald Group Publishing, vol. 38(12), pages 1134-1159, October.
    3. Chen, Haiwei & Ngo, Thanh, 2017. "Leverage-based index revisions: The case of Dow Jones Islamic Market World Index," Global Finance Journal, Elsevier, vol. 32(C), pages 16-34.
    4. Wang, Chuan & Murgulov, Zoltan & Haman, Janto, 2015. "Impact of changes in the CSI 300 Index constituents," Emerging Markets Review, Elsevier, vol. 24(C), pages 13-33.
    5. Daya, Wael & Mazouz, Khelifa & Freeman, Mark, 2012. "Information efficiency changes following FTSE 100 index revisions," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 22(4), pages 1054-1069.
    6. Chan, Kalok & Kot, Hung Wan & Tang, Gordon Y.N., 2013. "A comprehensive long-term analysis of S&P 500 index additions and deletions," Journal of Banking & Finance, Elsevier, vol. 37(12), pages 4920-4930.

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