Collective behavior of cryptocurrency price changes
Digital assets termed cryptocurrencies are correlated. We analyze cross correlations between price changes of different cryptocurrencies using methods of random matrix theory and minimum spanning trees. We find that the cross correlation matrix exhibits non-trivial hierarchical structures and groupi...
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| Published in | Physica A Vol. 507; pp. 499 - 509 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.10.2018
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0378-4371 1873-2119 |
| DOI | 10.1016/j.physa.2018.05.050 |
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| Abstract | Digital assets termed cryptocurrencies are correlated. We analyze cross correlations between price changes of different cryptocurrencies using methods of random matrix theory and minimum spanning trees. We find that the cross correlation matrix exhibits non-trivial hierarchical structures and groupings of cryptocurrency pairs, which are not present in the partial cross correlations. In sharp contrast to the predictions for other financial markets, we discover that most of the eigenvalues in the spectrum of the cross correlation matrix do not agree with the universal predictions of random matrix theory, but the few of the largest eigenvalues deviate as expected. The minimum spanning tree of cryptocurrency cross correlations reveals distinct community structures that are surprisingly stable. Collective behaviors that are present in the cryptocurrency market can be useful for the construction of portfolio of cryptocurrencies as well as for future research on the subject.
•We analyze cross correlations between price changes of different cryptocurrencies.•They exhibit non-trivial groupings not present in the partial cross correlations.•Most eigenvalues do not agree with the universal predictions of random matrix theory.•We discover rather distinct community structures in their minimum spanning trees.•Collective behaviors in cryptocurrency market differ from other financial markets. |
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| AbstractList | Digital assets termed cryptocurrencies are correlated. We analyze cross correlations between price changes of different cryptocurrencies using methods of random matrix theory and minimum spanning trees. We find that the cross correlation matrix exhibits non-trivial hierarchical structures and groupings of cryptocurrency pairs, which are not present in the partial cross correlations. In sharp contrast to the predictions for other financial markets, we discover that most of the eigenvalues in the spectrum of the cross correlation matrix do not agree with the universal predictions of random matrix theory, but the few of the largest eigenvalues deviate as expected. The minimum spanning tree of cryptocurrency cross correlations reveals distinct community structures that are surprisingly stable. Collective behaviors that are present in the cryptocurrency market can be useful for the construction of portfolio of cryptocurrencies as well as for future research on the subject.
•We analyze cross correlations between price changes of different cryptocurrencies.•They exhibit non-trivial groupings not present in the partial cross correlations.•Most eigenvalues do not agree with the universal predictions of random matrix theory.•We discover rather distinct community structures in their minimum spanning trees.•Collective behaviors in cryptocurrency market differ from other financial markets. |
| Author | Stosic, Tatijana Stosic, Dusan Stosic, Darko Ludermir, Teresa B. |
| Author_xml | – sequence: 1 givenname: Darko surname: Stosic fullname: Stosic, Darko email: ddstosic@bu.edu organization: Centro de Informática, Universidade Federal de Pernambuco , Av. Luiz Freire s/n, 50670-901, Recife, PE, Brazil – sequence: 2 givenname: Dusan surname: Stosic fullname: Stosic, Dusan email: dbstosic@bu.edu organization: Centro de Informática, Universidade Federal de Pernambuco , Av. Luiz Freire s/n, 50670-901, Recife, PE, Brazil – sequence: 3 givenname: Teresa B. surname: Ludermir fullname: Ludermir, Teresa B. email: tbl@cin.ufpe.br organization: Centro de Informática, Universidade Federal de Pernambuco , Av. Luiz Freire s/n, 50670-901, Recife, PE, Brazil – sequence: 4 givenname: Tatijana surname: Stosic fullname: Stosic, Tatijana email: tastosic@gmail.com organization: Departamento de Estatística e Informática, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros s/n, Dois Irmãos, 52171-900, Recife, PE, Brazil |
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| Keywords | Cryptocurrencies Random matrix theory Correlation matrix Partial correlation matrix Minimum spanning tree Bitcoin |
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| Title | Collective behavior of cryptocurrency price changes |
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