Stock market efficiency: An intraday case of study about the G-20 group

GF Zebende, RMTS Dias, LC de Aguiar - Heliyon, 2022 - cell.com
Given the importance of the financial markets in the global context, data analysis and new
statistical approach are always welcome, especially if we are referring to G-20 group (the …

Random walks and market efficiency tests: evidence on US, Chinese and European capital markets within the context of the global Covid-19 pandemic

R Dias, N Teixeira, V Machova, P Pardal… - Oeconomia …, 2020 - ceeol.com
Research background: Covid-19 has affected the global economy and has had an inevitable
impact on capital markets. In the week of February 24–28, 2020, stock markets crashed. The …

Analysis of stock market efficiency during crisis periods in the US stock market: Differences between the global financial crisis and COVID-19 pandemic

SY Choi - Physica A: Statistical Mechanics and Its Applications, 2021 - Elsevier
In this study, we test the efficient market hypothesis for a number of sectors in the US stock
market during the COVID-19 pandemic to identify its effects on individual sectors. To test this …

DCCA and DMCA correlations of cryptocurrency markets

P Ferreira, L Kristoufek, EJAL Pereira - Physica A: Statistical Mechanics …, 2020 - Elsevier
We examine the serial correlation structure of six liquid cryptocurrencies with a long data
record–Bitcoin, DASH, Stellar, Litecoin, Monero, and Ripple–with a use of the detrended …

Dynamic cross-correlation and dynamic contagion of stock markets: A sliding windows approach with the DCCA correlation coefficient

O Tilfani, P Ferreira, MY El Boukfaoui - Empirical Economics, 2021 - Springer
How stock markets relate to each other is very important because this could have positive
effects (such as enhancing economic growth) but also negative effects (possible contagion …

Multifractal cross-correlations risk among wti and financial assets

LHS Fernandes, JWL Silva, DD Quintino… - Fractals, 2022 - World Scientific
Independent of science branch, scientists have a consensus that peoples lives are highly
susceptible to risk, and effectively quantifying risk is a big challenge. This paper assesses …

Price fairness: Clean energy stocks and the overall market

G Choi, K Park, E Yi, K Ahn - Chaos, Solitons & Fractals, 2023 - Elsevier
This study analyzes the current status and potential of clean energy stocks compared with
the overall stock market index, particularly in terms of market efficiency and information flow …

Comparing the efficiency and similarity between wti, fiat currencies and foreign exchange rates

LHS Fernandes, JWL Silva, DD Quintino… - Fluctuation and Noise …, 2023 - World Scientific
The complex dynamics of financial asset prices play a pivotal role in the global economy
and consequently in the life of the people. Thus, this research encompasses a systematic …

[PDF][PDF] Financial contagion between the US and emerging markets: COVID-19 pandemic case

P Heliodoro, R Dias… - 4th EMAN Selected Papers …, 2020 - eman-conference.org
To realise how crises are disseminated is relevant for policy makers and regulators in order
to take appropriate measures to prevent or contain the propagation of crises. This study aims …

Bitcoin and market-(in) efficiency: a systematic time series approach

N Bundi, M Wildi - Digital Finance, 2019 - Springer
Recently, cryptocurrencies have received substantial attention by investors given their
innovative features, simplicity and transparency. We here analyze the increasingly popular …