A new way to estimate market power in banking

Hirofumi Fukuyama () and Yong Tan

Journal of the Operational Research Society, 2022, vol. 73, issue 2, 445-453

Abstract: Market power in banking is very important to increase a bank’s competitive power. The investigation of this is of particular relevance to the Chinese banking industry in the light of the stability issue experienced by the Chinese commercial banks in 2019. Instead of using translog cost function or semi-parametric method as a component to estimate Lerner index, this study estimates Lerner index based on data envelopment analysis. The results show that joint-stock banks have the lowest market power, while although city commercial banks have a higher level of market power than joint-stock commercial banks, it is still lower than the other three ownership types. Overall, the Chinese banking industry experienced a decline in the level of market power from 2010 to 2015, after which there was a slight increase in the level, the market power ended up with a value of 0.937 by the of 2018. We notice that the Chinese banking industry in general has a higher level of market power with the value of Lerner index achieved more than 0.93 for every year of the examined period.

Date: 2022
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DOI: 10.1080/01605682.2020.1824555

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