Universal banking, asymmetric information and the stock market

Banerji, Sanjay and Basu, Parantap (2017) Universal banking, asymmetric information and the stock market. Economic Modelling, 60 . pp. 180-193. ISSN 0264-9993

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Abstract

This paper aims to explore the role of the universal banking system in contributing to the stock market bust in the wake of the financial crisis 2008–2009 when bankers might have incentive to hide information from shareholders. We set up a stylized model of consumption smoothing involving universal banks that undertake both investment and commercial banking activities. Banks have private information about the outcome of a project that it funds. In the wake of bad news about the project, the banker has an incentive to sell lemon shares in a secondary market with the pretence of a liquidity crunch. Our model shows that such an incentive results in (i) a sharp discounting of stock prices, (ii) greater loan demand (iii) higher fraction of bank ownership of the borrowing firms, and (iv) heightened consumption risk resulting in precautionary savings by households. The magnitude of these effects depends on the market's perception about the preponderance of lemons in the stock market. A credible punishment scheme implemented by the government in the form of fines may moderate the stock market decline and consumption volatility due to information friction. However, it imposes a deadweight loss on private citizens because of a fall in all banks' expected profit. On the other hand, a “ring-fenced” banking arrangement along the way suggested by the Vickers Commission may entail a first order welfare loss due to the lack of diversification opportunities.

Item Type: Article
RIS ID: https://nottingham-repository.worktribe.com/output/842301
Keywords: Universal Banking; Risk sharing; Stock market discount; Precautionary saving; Ring-fencing
Schools/Departments: University of Nottingham, UK > Faculty of Social Sciences > Nottingham University Business School
Identification Number: https://doi.org/10.1016/j.econmod.2016.09.009
Depositing User: Howis, Jennifer
Date Deposited: 09 Mar 2017 13:56
Last Modified: 04 May 2020 18:32
URI: https://eprints.nottingham.ac.uk/id/eprint/41163

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