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.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7597241 | PMC |
| http://dx.doi.org/10.3390/e22090954 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The daily minimum leaf turgor pressure can represent the water status of apple trees under drip irrigation.
Front Plant Sci
December 2024
College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan, China.
Introduction: Accurate diagnosis of the water status of fruit trees is a prerequisite for precise irrigation. Measurement of leaf turgor pressure provides a means to explore the water utilization mechanisms of fruit trees and their responses to water stress. However, there are few studies on the use of daily minimum leaf turgor pressure (Ppmax) to indicate water information in apple tree.
View Article and Find Full Text PDFConcurrent effects and dynamic wetting abilities of nanometals anchored redox-active Janus nanoarchitectures on cotton fabric for sustainable catalysis and disinfection.
Int J Biol Macromol
December 2024
Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Key Laboratory of Textile Fiber & Product, Ministry of Education, Wuhan Textile University, Wuhan 430200, China; School of Materials Science & Engineering, Hubei University of Automotive Technology, Shiyan 442002, China. Electronic address:
Article Synopsis
- Designed a new type of catalyst using a unique Lous-leaf-inspired nanoarchitecture that prevents contamination and improves efficiency in disinfection processes.
- Utilized hydrophilic polydopamine to help create a special coating on cotton fabric that interacts well with contaminants and boosts antibacterial action, all without needing extra chemicals.
- Achieved over 99% antibacterial effectiveness against E. coli even after multiple washes, demonstrating strong resistance and the ability to tackle common challenges in catalytic reactions.
Harnessing Microbial Signal Transduction Systems in Natural and Synthetic Consortia for Biotechnological Applications.
Biotechnol Appl Biochem
December 2024
Department of Chemical Engineering, Guangdong Technion-Israel Institute of Technology (GTIIT), Shantou, Guangdong, China.
Signal transduction is crucial for communication and cellular response in microbial communities. Consortia rely on it for effective communication, responding to changing environmental conditions, establishing community structures, and performing collective behaviors. Microbial signal transduction can be through quorum sensing (QS), two-component signal transduction systems, biofilm formation, nutrient sensing, chemotaxis, horizontal gene transfer stress response, and so forth.
View Article and Find Full Text PDFDensity dependence maintains long-term stability despite increased isolation and inbreeding in the Florida Scrub-Jay.
Ecol Lett
December 2024
Department of Biology, University of Rochester, Rochester, New York, USA.
Isolation caused by anthropogenic habitat fragmentation can destabilize populations. Populations relying on the inflow of immigrants can face reduced fitness due to inbreeding depression as fewer new individuals arrive. Empirical studies of the demographic consequences of isolation are critical to understand how populations persist through changing conditions.
View Article and Find Full Text PDFSystem dynamics modeling of collaborative governance in smart cities: a case study of Dongguan, China.
Sci Rep
December 2024
School of Business Administration, Liaoning Technical University, Huludao, China.
The smart city, characterized by its complexity and expansiveness, entails intricate collaborative governance processes involving a multitude of elements. We have established a smart city collaborative governance system and formulated a system dynamics model based on the interaction dynamics among the internal elements of the collaborative governance subsystems: the subject, object, and environment. Policy adjustment variables were carefully selected to simulate six policy combination scenarios, illustrating the developmental trajectory of Dongguan City's smart city collaborative governance system from 2015 to 2030, within the context of various policy paradigms.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!