Rain or Shine: Where is the Weather Effect?
Saunders (1993) and Hirshleifer and Shumway (2001) document the effect of weather on stock returns. The proposed explanation in both papers is that investor mood affects cognitive processes and trading decisions. In this paper, we use a database of individual investor accounts to examine the weather effects on traders. Our analysis of the trading activity in five major U.S. cities over a six-year period finds vistually no difference in individuals propensity to buy or sell equities on cloudy days as opposed to sunny days. If the association between cloud cover and stock returns documented for New York and other world cities is indeed caused by investor mood swings, our findings suggest that researchers should focus on the attitudes of market-makers, news providers or other agents physically located in the city hosting the exchange. NYSE spreads widen on cloudy days. When we control for this, the significance of the weather effect is dramatically reduced. We interpret this as evidence that the behavior of market-makers, rather than individual investors, may be responsible for the relation between returns and weather.
|Date of creation:||Feb 2003|
|Date of revision:|
|Publication status:||published as Goetzmann, William N. and Ning Zhu. "Rain or Shine: Where is the Weather Effect?" European Financial Management 11, 5 (November 2005): 559-578.|
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- Steven J. Brown & William N. Goetzmann & Takato Hiraki & Niroyoshi Shiraishi & Masahiro Watanabe, 2002.
"Investor Sentiment in Japanese and U.S. Daily Mutual Fund Flows,"
Yale School of Management Working Papers
ysm24, Yale School of Management.
- Stephen J. Brown & William N. Goetzmann & Takato Hiraki & Noriyoshi Shirishi & Masahiro Watanabe, 2003. "Investor Sentiment in Japanese and U.S. Daily Mutual Fund Flows," NBER Working Papers 9470, National Bureau of Economic Research, Inc.
- Stephen Brown & William Goetzmann & Takato Hiraki & Noriyoshi Shiraishi & Masahiro Watanabe, 2002. "Investor Sentiment in Japanese and U.S. Daily Mutual Fund Flows," Yale School of Management Working Papers ysm274, Yale School of Management, revised 01 Apr 2008.
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"Daily Momentum and Contrarian Behavior of Index Fund Investors,"
NBER Working Papers
7567, National Bureau of Economic Research, Inc.
- Goetzmann, William N. & Massa, Massimo, 2002. "Daily Momentum and Contrarian Behavior of Index Fund Investors," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 37(03), pages 375-389, September.
- William N. Goetzmann & Massimo Massa, 1999. "Daily Momentum And Contrarian Behavior Of Index Fund Investors," Yale School of Management Working Papers ysm13, Yale School of Management.
- Massimo Massa & William Goetzmann, 2000. "Daily Momentum And Contrarian Behavior Of Index Fund Investors," Yale School of Management Working Papers ysm134, Yale School of Management, revised 01 Apr 2001.
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