Product and geographic market diversification in U.S. banking

Jingfang Zhang, Valentina Hartarska () and Emir Malikov

Finance Research Letters, 2021, vol. 42, issue C

Abstract: Prior literature either estimates economies of product diversification or evaluates the effects of market expansion on bank performance, but few studies look at the intersection of product and geographic diversification. We examine if the market expansion opportunities resulting from deregulation helped improve diversification/scope economies exhibited by banks. We leverage spatiotemporal variation in the implementation of deregulation laws across states to identify this relationship using a difference-in-differences framework. We find that the inter/intrastate deregulation accounts for a modest but statistically significant decrease in diversification diseconomies, and these gains were long-lasting. The findings suggest that geographic and product diversification are complementary.

Keywords: Banks; Deregulation; Market diversification; Product diversification; Scope economies (search for similar items in EconPapers)
JEL-codes: D24 G21 L25 (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:finlet:v:42:y:2021:i:c:s1544612320316950

DOI: 10.1016/j.frl.2020.101881

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