The price of cryptocurrency Bitcoin has risen sharply over the past ten years, with many investors adding Bitcoin to their portfolios, benefitting from price increases and diversifying their investments. But is Bitcoin suitable for this purpose? This Weekly Report examines the extent to which...

Football referees possess substantial discretion in allocating stoppage time, a decision that is comparatively opaque yet potentially consequential for match outcomes. This paper examines whether stoppage time allocation contributes to home advantage in contemporary European professional...

Our study collected and synthetized the existing knowledge on portfolio diversification, hedge, and safe-haven properties in cryptocurrency investments. We sampled 146 studies published in journals ranked in the Association of Business Schools 2021 journals list, considering all fields of...

Der Kurs der Kryptowährung Bitcoin ist in den vergangenen zehn Jahren enorm gestiegen. Viele Anleger*innen haben inzwischen Bitcoin in ihr Portfolio aufgenommen, um von dem Kursanstieg zu profitieren und ihre Anlagen zu diversifizieren. Doch eignet sich die Kryptowährung dazu? Dieser...

The price of cryptocurrency Bitcoin has risen sharply over the past ten years, with many investors adding Bitcoin to their portfolios, benefitting from price increases and diversifying their investments. But is Bitcoin suitable for this purpose? This Weekly Report examines the extent to which...

This paper empirically examines the decoupling hypothesis by assessing the asymmetric transmissions and contagion effects of oil price shocks on Islamic and conventional stock indices in major oil-importing and -exporting countries. Using the Asymmetric Dynamic Conditional Correlation GARCH...

This study investigates the presence and variation of home bias across different hierarchical levels in German men’s football. Based on an extensive dataset comprising 357,530 matches from the 2023/2024 season—collected via a Python script—the analysis includes match outcomes, attendance...

This study investigates the impact of transaction costs on the performance differential between equal-weighted portfolios (EWPs) and value-weighted portfolios (VWPs). Employing a comprehensive dataset of 181 stocks from 1970 to 2023, we utilize paired two-sample tests to identify statistically...

Der Kurs der Kryptowährung Bitcoin ist in den vergangenen zehn Jahren enorm gestiegen. Viele Anleger*innen haben inzwischen Bitcoin in ihr Portfolio aufgenommen, um von dem Kursanstieg zu profitieren und ihre Anlagen zu diversifizieren. Doch eignet sich die Kryptowährung dazu? Dieser...

The home bias is a well-documented phenomenon highlighting how administrative borders hinder economic transactions. This paper estimates the magnitude of China's provincial border effect using inter-provincial and intra-provincial trade data, with a particular focus on the role of trust in...

This study investigates systemic risk, return patterns, and diversification within the Johannesburg Stock Exchange (JSE) during the COVID-19 pandemic, utilizing data-centric approaches and the ARMA-GARCH vine copula-based conditional value-at-risk (CoVaR) model. By comparing three investment...

We investigate the phenomenon of home bias in scientific citations, where researchers disproportionately cite work from their own country. We develop a benchmark for expected citations based on the relative size of countries, defining home bias as deviations from this norm. Our findings reveal...

This paper develops a robust portfolio optimization framework that integrates Weighted Shannon Entropy (WSE) into the classical mean-variance paradigm, offering a distribution-free approach to diversification suited for volatile and heavy-tailed markets. While traditional variance-based models...

This paper applies wavelet quantile correlation to research on the relationship among renewable energy stocks, investor sentiment, and the cryptocurrency market. The empirical results indicated that under extremely negative conditions, in both the short and medium run, renewable energy stocks...

We investigate the phenomenon of home bias in scientific citations, where researchers disproportionately cite work from their own country. We develop a benchmark for expected citations based on the relative size of countries, defining home bias as deviations from this norm. Our findings reveal...

This study employs novel quantile time-frequency connectedness approach to explore the dynamic connectedness among sustainable assets (sustainable, green bond, and clean energy index), traditional assets (traditional index and crude oil), and cryptocurrency. This method assesses the impact of...

The rapid integration of FinTech and sustainability-oriented sectors is reshaping financial risk dynamics, particularly in emerging markets such as China. This study investigates tail-dependent spillovers among ten Chinese FinTech and sustainability-linked sectors from 2015-2024 using a...

This research explores the interdependence within the international logistics sector among 17 nations, utilizing a quantile-based technique to assess the transmission of returns. By analyzing daily data from DataStream spanning from 1 June 2016, to 12 August 2024, we apply the Quantile Vector...

We analyse changes in the National Football League (NFL) due to ghost games in 2020. The home bias disappears as expected. This also applies to semi-ghost games with significantly fewer spectators than regular games and to referee decisions regarding penalties.

This study employs a variety of machine learning models and a wide range of economic and financial variables to enhance the forecasting accuracy of the Korean won-U.S. dollar (KRW/USD) exchange rate and the U.S. and Korean stock market returns. We construct international asset allocation...

Investment funds hold a disproportionately larger fraction of domestic relative to foreign stocks. Stock market development and familiarity (language and distance) are considered key determinants for home bias. The literature neglects however that investors often invest in foreign funds...