Bank Lending with Capped Credit Risk, Hedging Efficiency, and Government Capital Injection

10.6186/IJIMS.2016.27.3.1

Jyh-Jiuan Lin；Shi Chen；Rosemary Jou

Bank efficiency ； government capital injection ； capped call option ； bank interest margin

International Journal of Information and Management Sciences

27卷3期（2016 / 09 / 01）

217 - 235

英文

This paper examines bank efficiency gain/loss from loan swap diversification under government capital injection when the borrowing firm's risk exposure in the product market is explicitly considered. The lending function of the bank creates specific risk characteristics of the borrowing firm and the necessity to model the equity of the bank as a capped call option. Using a contingent claim model of a bank-borrowing firm structure with capped call valuation, we find that loan swap diversification leads to higher efficiency gain for the bank. We also show that the bank increases interest margin, decreases equity risk, and increases efficiency gain as a reaction to an increase in the government's capital injection. Bank efficiency which ignores the capped credit risk from the borrowing firm leads to loss from loan swap diversification. In the case where the cap is ignored, an increase in the government's capital injection increases bank efficiency loss.

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