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The Seasonal Stability of the Factor Structure of Stock Returns

  • Cho, David Chinhyung
  • Taylor, William M
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    This paper investigates the month-by-month stability of (1) daily returns and correlation coe fficients of stock returns; (2) correlation and covariance matrices; (3) the number of return-generating factors; and (4) the APT pricing relationships. The results show that there is a January effect and a small-firm effect in stock returns. Correlation and covariance matric es are not stable across months and across the sample groups. The num ber of return-generating factors is rather stable with occasional ins tabilities that are related to the average correlation coefficients a mong stocks. The APT pricing relationship does not seem to be support ed by the two-stage process using the maximum likelihood factor analy sis. Copyright 1987 by American Finance Association.

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    Article provided by American Finance Association in its journal Journal of Finance.

    Volume (Year): 42 (1987)
    Issue (Month): 5 (December)
    Pages: 1195-1211

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    Handle: RePEc:bla:jfinan:v:42:y:1987:i:5:p:1195-1211
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