A New Look on Financial Markets Co-Movement through Cooperative Dynamics in Many-Body Physics

One of the main contributions of the Capital Assets Pricing Model (CAPM) to portfolio theory was to explain the correlation between assets through its relationship with the market index. According to this approach, the market index is expected to explain the co-movement between two different stocks...

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Detalles Bibliográficos
Autores principales: López-García, María Nieves, Sánchez-Granero, Miguel Angel, Trinidad-Segovia, Juan Evangelista, Puertas, Antonio Manuel, Nieves, Francisco Javier De las
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7597241/
https://www.ncbi.nlm.nih.gov/pubmed/33286723
http://dx.doi.org/10.3390/e22090954
Descripción
Sumario:One of the main contributions of the Capital Assets Pricing Model (CAPM) to portfolio theory was to explain the correlation between assets through its relationship with the market index. According to this approach, the market index is expected to explain the co-movement between two different stocks to a great extent. In this paper, we try to verify this hypothesis using a sample of 3.000 stocks of the USA market (attending to liquidity, capitalization, and free float criteria) by using some functions inspired by cooperative dynamics in physical particle systems. We will show that all of the co-movement among the stocks is completely explained by the market, even without considering the market beta of the stocks.

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