Essays In The Economics Of Us Property Casualty Insurance Industry
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ESSAYS IN THE ECONOMICS OF U.S. PROPERTY-CASUALTY INSURANCE INDUSTRY
Author | : Shuang Yang |
Publisher | : |
Total Pages | : 99 |
Release | : 2017 |
Genre | : |
ISBN | : |
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This dissertation consists of two topics. Chapter 1 explores the relationship between U.S. Property-Casualty (P/C) insurers' underwriting risk, investment risk, and leverage risk, using data from 1998 to 2013. I test the trade-off hypothesis using a simultaneous equation model framework with partial adjustment effects. The three equations model intend to examine the interrelations between insurers' leverage and two measures of firm risks: underwriting risk and investment risk. The empirical evidence, various to different sample periods and model specifications, suggests there is no significant relationship existing between insurers' underwriting risk and investment risk. But these two types of risks are both significantly and negatively related to the leverage ratio. The overall results imply that insurers tend to tradeoff leverage risk and underwriting risk/investment risk, but it appears that they have not taken an integrated approach between the total level of underwriting risk and investment risk yet. The second part of this dissertation empirically investigates the impact of credit risk on insurers' reinsurance demand, using data on the U.S. P/C insurance industry from 2000 to 2014. I mainly explore how insurers' credit rating status and downgrade risk affects their reinsurance demand. Using a two-stage least square (2SLS) regression model, I find that low-rated insurers are associated with a higher utilization of reinsurance. In addition, insurers that are downgraded in the previous year tend to have a higher reinsurance demand than the others. Results also show that downgraded group-affiliated insurers tend to significantly increase their internal reinsurance demand from the group-affiliated members while decreasing the purchase of external reinsurance significantly. In general, I find that insurers' reinsurance demand is affected by their credit rating and downgrade risk.
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