Investigating Causal Relationships in Stock Returns with Temporal Logic Based Methods
AbstractWe describe a new framework for causal inference and its application to return time series. In this system, causal relationships are represented as logical formulas, allowing us to test arbitrarily complex hypotheses in a computationally efficient way. We simulate return time series using a common factor model, and show that on this data the method described significantly outperforms Granger causality (a primary approach to this type of problem). Finally we apply the method to real return data, showing that the method can discover novel relationships between stocks. The approach described is a general one that will allow combination of price and volume data with qualitative information at varying time scales (from interest rate announcements, to earnings reports to news stories) shedding light on some of the previously invisible common causes of seemingly correlated price movements.
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Bibliographic InfoPaper provided by arXiv.org in its series Papers with number 1006.1791.
Date of creation: Jun 2010
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Web page: http://arxiv.org/
This paper has been announced in the following NEP Reports:
- NEP-ALL-2010-06-18 (All new papers)
- NEP-CMP-2010-06-18 (Computational Economics)
- NEP-ECM-2010-06-18 (Econometrics)
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