Stock return cross-autocorrelations and market conditions in Japan
We show that changes in market conditions significantly affect cross-autocorrelations and speed of adjustment in weekly stock returns. We find significant positive cross-autocorrelations between weekly returns on a portfolio of small firms and lagged large-firm portfolio returns only when the lagged...
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| Main Authors: | , |
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| Format: | text |
| Language: | English |
| Published: |
Institutional Knowledge at Singapore Management University
2006
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| Subjects: | |
| Online Access: | https://ink.library.smu.edu.sg/soa_research/1452 |
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| Institution: | Singapore Management University |
| Language: | English |
| Summary: | We show that changes in market conditions significantly affect cross-autocorrelations and speed of adjustment in weekly stock returns. We find significant positive cross-autocorrelations between weekly returns on a portfolio of small firms and lagged large-firm portfolio returns only when the lagged aggregate market has experienced a decline in value. These positive-return cross-autocorrelations are also associated with lower abnormal portfolio trading volume and greater delays in the adjustment of individual stock prices to ( negative) market-wide information, particularly for small firms. The effect of lagged market states cannot be explained by market microstructure biases such as nonsynchronous trading or thin trading. |
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