Interconnections and contagion among cryptocurrencies, DeFi, NFT and traditional financial assets: Some new evidence from tail risk driven network

X Liao, Q Li, S Chan, J Chu, Y Zhang - Physica A: Statistical Mechanics and …, 2024 - Elsevier
For digital assets (cryptocurrencies, DeFi tokens and NFTs) and traditional financial assets
such as stock indices and commodities, this paper established a dynamic downside risk …

[HTML][HTML] Stock market bubbles and the realized volatility of oil price returns

R Gupta, J Nielsen, C Pierdzioch - Energy Economics, 2024 - Elsevier
Using monthly data for the G7 countries from 1973 to 2020, we study whether stock market
bubbles help to forecast out-of-sample the realized volatility of oil price returns. We use the …

[HTML][HTML] Does every cloud (bubble) have a silver lining? An investigation of ESG financial markets

M Foglia, F Miglietta - Journal of Behavioral and Experimental Finance, 2024 - Elsevier
This paper investigates the presence of financial bubbles in the environmentally friendly
investments captured by the ESG markets. By using the log-periodic power law singularity …

Gold, platinum and the predictability of bubbles in global stock markets

R Demirer, D Gabauer, R Gupta, J Nielsen - Resources Policy, 2024 - Elsevier
This paper examines the predictability of bubbles across global stock markets and whether
or not synchronicity in bubble formation can be predicted via metrics of market risk that are …

Stock market prices and Dividends in the US: Bubbles or Long-run equilibria relationships?

R Dettoni, LA Gil-Alana, OOS Yaya - International Review of Financial …, 2024 - Elsevier
This paper presents a novel approach to identifying potential bubbles in the US stock market
by employing alternative time series methods based on long memory, including fractional …

Testing the hypothesis of duration dependence in the US housing market

R Dettoni, LA Gil-Alana - Finance Research Letters, 2023 - Elsevier
The aim of this work is to test for duration dependence to examine rational speculative
behaviour in the US housing market. Unlike other works that also test for duration …

Monetary policy shocks and multi-scale positive and negative bubbles in an emerging country: the case of India

O Cepni, R Gupta, J Nel, J Nielsen - Financial Innovation, 2025 - Springer
We employ the Multi-Scale Log-Periodic Power Law Singularity Confidence Indicator (MS-
LPPLS-CI) approach to identify positive and negative bubbles in the short-, medium, and …

Stock market volatility and multi-scale positive and negative bubbles

R Gupta, J Nel, J Nielsen, C Pierdzioch - The North American Journal of …, 2025 - Elsevier
We study whether booms and busts in the stock market of the United States (US) drives its
volatility. Given this, first, we employ the Multi-Scale Log-Periodic Power Law Singularity …

[HTML][HTML] Predicting multi-scale positive and negative stock market bubbles in a panel of G7 countries: the role of oil price uncertainty

R Van Eyden, R Gupta, X Sheng, J Nielsen - Economies, 2025 - mdpi.com
While there is a large body of literature on oil uncertainty-equity prices and/or returns nexus,
an associated important question of how oil market uncertainty affects stock market bubbles …

Stock Market Prices and Dividends in the US: Bubbles or Long-Run Equilibria Relationships?

OOS Yaya, LA Gil-Alana, R Dettoni - Available at SSRN 4794169, 2024 - papers.ssrn.com
This paper presents a novel approach to identifying potential bubbles in the US stock market
by employing alternative time series methods based on long memory, including fractional …