Regularities and discrepancies of credit default swaps: a data science approach through Benford's law
Journal article
Ausloos, M., Castellano, R. and Cerqueti, R. (2016). Regularities and discrepancies of credit default swaps: a data science approach through Benford's law. Chaos, Solitons and Fractals. 90, pp. 8-17. https://doi.org/10.1016/j.chaos.2016.03.002
Authors | Ausloos, M., Castellano, R. and Cerqueti, R. |
---|---|
Abstract | In this paper, we search whether the Benford’s law is applicable to monitor daily changes in sovereign credit default swaps (CDS) quotes, which are acknowledged to be complex systems of economic content. This test is of paramount importance since the CDS of a country proxy its health and probability to default, being associated to an insurance against the event of its default. We fit the Benford’s law to the daily changes in sovereign CDS spreads for 13 European countries – both inside and outside the European Union and European Monetary Union. Two different tenors for the sovereign CDS contracts are considered: 5 years and 10 years – the former being the reference and most liquid one. The time period under investigation is 2008–2015 which includes the period of distress caused by the European sovereign debt crisis. Moreover, (i) an analysis over relevant sub-periods is carried out; (ii) several insights are also provided by implementing the tracking of the Benford’s law over moving windows. The main test for checking the conformance to Benford’s law is – as usual – the χ2 test, whose values are presented and discussed for all cases. The analysis is further completed by elaborations based on Chebyshev’s distance and Kullback and Leibler’s divergence. The results highlight differences by countries and tenors. In particular, these results suggest that liquidity seems to be associated to higher levels of distortion. Greece – representing a peculiar case – shows a very different path with respect to the other European countries |
Year | 2016 |
Journal | Chaos, Solitons and Fractals |
Journal citation | 90, pp. 8-17 |
Publisher | Elsevier BV |
ISSN | 0960-0779 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.chaos.2016.03.002 |
Publication dates | |
Sep 2016 | |
Online | 26 Mar 2016 |
Publication process dates | |
Accepted | 02 Mar 2016 |
Deposited | 28 Feb 2020 |
Accepted author manuscript | License File Access Level Open |
https://openresearch.lsbu.ac.uk/item/89326
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Accepted author manuscript
ACC_BenfordCDS_REV_18012016.pdf | ||
License: CC BY-NC-ND 4.0 | ||
File access level: Open |
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