All Outputs (6)

Understanding reputational disaster during economic crises: Evaluating aviation sector response differentials (2024)
Journal Article
Akyildirim, E., Corbet, S., Nicolau, J. L., & Oxley, L. (2025). Understanding reputational disaster during economic crises: Evaluating aviation sector response differentials. Tourism Management, 106, Article 105028. https://doi.org/10.1016/j.tourman.2024.105028

This research investigates the impact of reputational events on the financial performance of airlines, with a particular focus on differential behaviour regarding the types of events—environmental, social, and governance (ESG), and the economic cycle... Read More about Understanding reputational disaster during economic crises: Evaluating aviation sector response differentials.

‘Take Back Control’: The implications of Brexit uncertainty on investor perception of ESG reputational events (2024)
Journal Article
Akyildirim, E., Conlon, T., Corbet, S., & Oxley, L. (2024). ‘Take Back Control’: The implications of Brexit uncertainty on investor perception of ESG reputational events. European Financial Management, https://doi.org/10.1111/eufm.12490

This study examines the impact of Brexit on investor reactions to Environmental, Social, and Governance (ESG) events in UK companies. Post-Brexit, investors show reduced sensitivity to ESG incidents, suggesting relaxed corporate accountability for ES... Read More about ‘Take Back Control’: The implications of Brexit uncertainty on investor perception of ESG reputational events.

Sentiment matters: the effect of news-media on spillovers among cryptocurrency returns (2024)
Journal Article
Akyildirim, E., Aysan, A. F., Cepni, O., & Serbest, Ö. (2024). Sentiment matters: the effect of news-media on spillovers among cryptocurrency returns. European Journal of Finance, 30(14), 1577-1613. https://doi.org/10.1080/1351847X.2024.2323454

This paper explores the relationship between news media sentiment and spillover effects in the cryptocurrency market. By employing a time-varying parameter vector autoregressive model, we initially develop measures of spillover specific to individual... Read More about Sentiment matters: the effect of news-media on spillovers among cryptocurrency returns.

Adverse selection in cryptocurrency markets (2023)
Journal Article
Tiniç, M., Sensoy, A., Akyildirim, E., & Corbet, S. (2023). Adverse selection in cryptocurrency markets. Journal of Financial Research, 46(2), 497-546. https://doi.org/10.1111/jfir.12317

In this article we investigate the influence that information asymmetry may have on future volatility, liquidity, market toxicity, and returns within cryptocurrency markets. We use the adverse-selection component of the effective spread as a proxy fo... Read More about Adverse selection in cryptocurrency markets.

Forecasting high-frequency excess stock returns via data analytics and machine learning (2021)
Journal Article
Akyildirim, E., Nguyen, D. K., Sensoy, A., & Šikić, M. (2023). Forecasting high-frequency excess stock returns via data analytics and machine learning. European Financial Management, 29(1), 22-75. https://doi.org/10.1111/eufm.12345

Borsa Istanbul introduced data analytics to present additional information about its market conditions. We examine whether this product can be utilized via various machine learning methods to predict intraday excess returns. Accordingly, these analyt... Read More about Forecasting high-frequency excess stock returns via data analytics and machine learning.

Do investor sentiments drive cryptocurrency prices? (2021)
Journal Article
Akyildirim, E., Aysan, A. F., Cepni, O., & Ceyhan Darendeli, S. P. (2021). Do investor sentiments drive cryptocurrency prices?. Economics Letters, 206, Article 109980. https://doi.org/10.1016/j.econlet.2021.109980

This paper studies the dynamic network connectedness between cryptocurrency returns and sentiments using the novel cryptocurrency-specific MarketPsych sentiment data for 13 cryptocur-rencies with the highest market capitalization. The results indicat... Read More about Do investor sentiments drive cryptocurrency prices?.