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Mark Ouche Obonyo

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Open access Sep 2026

Overconfidence Bias and Firm Market Value: The Mediating Role of Stock Return Volatility – Evidence from the Nairobi Securities Exchange

This study examines the effect of overconfidence bias on firm market value and the mediating role of stock return volatility in this relationship among firms listed on the Nairobi Securities Exchange (NSE) over the period 2016 - 2025. Despite growing evidence from developed markets, limited empirical research exists on...

Evans Odiwuor Ogola, Mark Ouche Obonyo, M. Nyamita · African Development Finance... · 0 citations

Open access Sep 2026

Investor Sentiment and Firm Market Value in a Frontier Market: The Mediating Role of Stock Return Volatility

This study examines the effect of investor sentiment on firm market value and the mediating role of stock return volatility in this relationship among firms listed on the Nairobi Securities Exchange (NSE) over the period 2016 - 2025. Although empirical evidence is largely concentrated in developed markets, limited empi...

Evans Odiwuor Ogola, Mark Ouche Obonyo, M. Nyamita · African Development Finance... · 0 citations

Open access Sep 2026

Credit Risk Identification and Financial Performance of Savings and Credit Societies in Homabay County, Kenya

Savings and Credit Cooperative Societies (SACCOs) play an important role in savings mobilization and access to affordable credit, but Credit risk remains a challenge to their financial performance. Anchored on Asymmetric Information Theory, a correlational research design was adopted. The population comprised 300 senio...

M. A. Odhiambo, Mark Ouche Obonyo · African Development Finance... · 0 citations