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This paper studies the time-varying structure of the equity market with respect to market capitalization. First, we analyze the distribution of the 100 largest companies' market capitalizations over time, in terms of inequality,…

Mathematical Finance · Quantitative Finance 2025-02-21 Nick James , Max Menzies

Researchers have constantly asked whether stock returns can be predicted by some macroeconomic data. However, it is known that macroeconomic data may exhibit nonstationarity and/or heavy tails, which complicates existing testing procedures…

Applications · Statistics 2014-05-01 Fukang Zhu , Zongwu Cai , Liang Peng

A dynamical model is introduced for the formation of a bullish or bearish trends driving an asset price in a given market. Initially, each agent decides to buy or sell according to its personal opinion, which results from the combination of…

Physics and Society · Physics 2011-06-09 Serge Galam

In Bangladesh, a nation vulnerable to climate change, accurately quantifying the risk of extreme weather events is crucial for planning effective adaptation and mitigation strategies. Downscaling coarse climate model projections to finer…

Atmospheric and Oceanic Physics · Physics 2024-08-22 Anamitra Saha , Sai Ravela

Volatility forecasting in financial markets is a topic that has received more attention from scholars. In this paper, we propose a new volatility forecasting model that combines the heterogeneous autoregressive (HAR) model with a family of…

Risk Management · Quantitative Finance 2025-11-04 Xiangdong Liu , Sicheng Fu , Shaopeng Hong

This paper considers a portfolio trading strategy formulated by algorithms in the field of machine learning. The profitability of the strategy is measured by the algorithm's capability to consistently and accurately identify stock indices…

Machine Learning · Statistics 2014-04-08 James Brofos

Agent-based models help explain stock price dynamics as emergent phenomena driven by interacting investors. In this modeling tradition, investor behavior has typically been captured by two distinct mechanisms -- learning and heterogeneous…

Computers and Society · Computer Science 2025-11-12 Ryuji Hashimoto , Ryosuke Takata , Masahiro Suzuki , Yuki Tanaka , Kiyoshi Izumi

Statistical physics of complex systems exploits network theory not only to model, but also to effectively extract information from many dynamical real-world systems. A pivotal case of study is given by financial systems: market prediction…

Risk Management · Quantitative Finance 2017-10-31 Matteo Serafino , Andrea Gabrielli , Guido Caldarelli , Giulio Cimini

Firms compete for clients, creating distributions of market shares ranging from domination by a few giant companies to markets in which there are many small firms. These market structures evolve in time, and may remain stable for many years…

Physics and Society · Physics 2024-01-09 Joseph Hickey

Prediction markets are well-studied in the case where predictions are probabilities or expectations of future random variables. In 2008, Lambert, et al. proposed a generalization, which we call "scoring rule markets" (SRMs), in which…

Computer Science and Game Theory · Computer Science 2017-09-29 Rafael Frongillo , Bo Waggoner

Stock market forecasting is very important in the planning of business activities. Stock price prediction has attracted many researchers in multiple disciplines including computer science, statistics, economics, finance, and operations…

Computation and Language · Computer Science 2019-07-23 Dev Shah , Haruna Isah , Farhana Zulkernine

The efficiency of the stock market has a significant impact on the potential return on investment. An efficient market eliminates the possibility of arbitrage and unexploited profit opportunities. This study analyzes the weak form…

General Finance · Quantitative Finance 2020-12-03 Devansh Jain , Manthan Patel , Aman Narsaria , Siddharth Malik

Analysis and prediction of stock market time series data has attracted considerable interest from the research community over the last decade. Rapid development and evolution of sophisticated algorithms for statistical analysis of time…

Other Computer Science · Computer Science 2016-05-12 Jaydip Sen , Tamal Datta Chaudhuri

Hypothesis of Market Efficiency is an important concept for the investors across the globe holding diversified portfolios. With the world economy getting more integrated day by day, more people are investing in global emerging markets. This…

Computational Finance · Quantitative Finance 2017-09-14 Oleg Malafeyev , Achal Awasthi , Kaustubh S. Kambekar

With the application of artificial intelligence in the financial field, quantitative trading is considered to be profitable. Based on this, this paper proposes an improved deep recurrent DRQN-ARBR model because the existing quantitative…

Statistical Finance · Quantitative Finance 2021-12-01 Peng Zhou , Jingling Tang

The uncertainties in future Bitcoin price make it difficult to accurately predict the price of Bitcoin. Accurately predicting the price for Bitcoin is therefore important for decision-making process of investors and market players in the…

Statistical Finance · Quantitative Finance 2019-09-04 Samuel Asante Gyamerah

Financial models have increasingly become popular in recent times, and the focus of researchers has been to find the perfect model which fits all circumstances; however, this has not been thoroughly achieved, and as a result, many financial…

Computational Engineering, Finance, and Science · Computer Science 2024-10-22 Sydney Anuyah Mary Akinyemi , Chika Yinka-Banjo

Stock market forecasting is a lucrative field of interest with promising profits but not without its difficulties and for some people could be even causes of failure. Financial markets by their nature are complex, non-linear and chaotic,…

Statistical Finance · Quantitative Finance 2022-01-31 Ivan Letteri , Giuseppe Della Penna , Giovanni De Gasperis , Abeer Dyoub

We study correlations of a set of stocks selected from both the New York and London stock exchanges. Results are displayed using both Random Matrix Theory approach and the graphical visualisation of the Minimal Spanning Tree. For the set of…

Physics and Society · Physics 2007-10-29 Ricardo Coelho , Peter Richmond , Stefan Hutzler , Brian Lucey

Purpose With an emphasis on elements like financial knowledge, financial attitude, social influence, financial self-efficacy, and financial management practices, this study explores the factors that influence employees' saving behavior in…

Statistical Finance · Quantitative Finance 2025-07-30 Soumita Roy , Md Muntasir Kamal Dihan , Tasnimah Haque , Nafisa Nomani , Sadia Islam Preety