Weights in the Toronto Stock Exchange 300 index are determined by the market values of the included stocks' public floats. In November 1996, the exchange implemented a previously announced revision of its definition of the public float. This revision, which increased the floats and the index weights of 31 stocks, conveyed no information and had no effect on the legal duties of shareholders. Affected stocks experienced statistically significant excess returns of 2.3 percent during the event week, and no price reversal occurred as trading volume returned to normal levels. These findings support downward sloping demand curves for stocks. Copyright The American Finance Association 2000.
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Nicholas Barberis & Andrei Shleifer & Jeffrey Wurgler, 2002.
"Comovement,"
NBER Working Papers
8895, National Bureau of Economic Research, Inc.
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Barberis, Nicholas & Shleifer, Andrei & Wurgler, Jeffrey, 2005.
"Comovement,"
Journal of Financial Economics,
Elsevier, vol. 75(2), pages 283-317, February.
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Nicholas Barberis & Andrei Shleifer, 2000.
"Style Investing,"
NBER Working Papers
8039, National Bureau of Economic Research, Inc.
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