Capital Requirement

  • 详情 Reputation in Insurance: Unintended Consequences for Capital Allocation
    Reputation is widely regarded as a stabilizing factor in financial institutions, reducing capital constraints and enhancing firm resilience. However, in the insurance industry, where capital requirements are shaped by solvency regulations and policyholder behavior, the effects of reputation on capital management remain unclear. This paper examines the unintended consequences of reputation in insurance asset-liability management, focusing on its impact on capital allocation. Using a novel reputation risk measure based on large language models (LLMs) and actuarial models, we show that reputation shifts influence surrender rates, altering capital requirements. While higher reputation reduces surrender risk, it increases capital demand for investment-oriented insurance products, whereas protection products remain largely unaffected. These findings challenge the conventional wisdom that reputation always eases capital constraints, highlighting the need for insurers to integrate reputation management with capital planning to avoid unintended capital strain.
  • 详情 The Impact of Banking Innovations: Evidence from China and Welfare Implications
    Understanding the impacts of new technology and innovations on the banking sector is important and of growing interest. However, there is limited research on the detailed channels of the impacts, and consequently, the evaluations for the aggregate welfare impacts. We contribute both empirically and quantitatively. We construct a new data set for Chinese banks. We ffnd banking innovations can improve efficiency, and mostly reduce non-interest costs but not so much on deposit rates. We show the ffnding is quite robust under a battery of checks. In a new structural, quantitative model, banks have heterogeneous capital, decide innovation investment and also risky lending, face regulations on the capital requirement and have limited liability. When aggregate new technology improves, it can reduce financial intermediation costs and social deadweight loss; however, it will also change the bank’s risk consideration and increases moral hazard when the cost is largely reduced. We also find several other new implications for R&D investment credit policy and Capital Requirement policy (CAR).
  • 详情 Bond Finance, Bank Finance, and Bank Regulation
    In this paper, I build a continuous-time macro-finance model in which firms can access both bond credit and bank credit. The model captures the simple idea that the presence of bond financing increases the price elasticity of demand for bank loans. I find that the optimal capital adequacy ratio is quantitatively sensitive to the presence of bond financing and that models would overstate the banking sector's recovery rate if they omit bond financing. Furthermore, the model highlights that an economy's optimal capital requirement highly depends on the efficiency of its bankruptcy procedure and the risk profile of its real sector.
  • 详情 Adverse Impacts of Regulatory Reforms and Policy Remedies: Theory and Evidence
    We develop a portfolio-choice model to investigate how regulatory reforms influence the risk-taking behavior of financial institutions with different capital adequacy levels. The model predicts that either all firms reduce their risk-taking, or there exists a capital-adequacy threshold below which risk-taking increases as regulation becomes more stringent. The Chinese insurance solvency regulatory reform provides a unique natural experiment to test our theory. In 2015, each insurer reported two solvency ratios under the original and the new regulatory systems. The difference between them produces an exogenous and insurer-specific measure of the regulatory pressure shock. Consistent with our theoretical predictions, we find that increasing regulatory pressure induces greater risk-taking for less capital-adequate insurers, of which the regulator should want to reduce risk-taking mostly. We show that increasing the penalties of insolvency, increasing the risk sensitivity of capital requirements, and reinforcing the qualitative risk assessment are effective policy remedies for this backfiring problem.
  • 详情 偿付能力资本需求——基于中国财险公司的实证分析(博士生论坛征文)
    基于保险监管视角,借鉴欧盟“偿付能力II”相关理论,对市场风险运用幂阶转换在险价值(Normal Power Approximation Value-at-Risk),并进行波动率时间序列建模;对保险风险运用精算模型;对信用风险和操作风险则借用巴塞尔新资本协议的相关标准模型,实证分析了我国财险公司的偿付能力资本需求。结果显示:偿付能力资本需求(Solvency capital requirement, SCR)是最低资本需求(Minimal capital requirement, MCR)的1.928倍,表明以风险为基础计算的资本需求远大于基于业务量大小的资本需求。
  • 详情 Financial Innovations and Banking Reform: Implications for banking without deposit insuran
    Although bank loans themselves are somewhat illiquid because of private information, most of their cashflows are not. Recent financial innovations allow commercial loans to be liquefied via credit derivatives and actual and synthetic securitizations. The loan originating bank holds the remaining illiquid tranche containing the concentrated credit risk, private information rent and the “excess spread” that incentivize the bank to continue to monitor and service the loans. Empirically, we find that the average size of the residual tranche is about 3%, which reflects the size of the “market determined capital” necessary to support the liquefaction. The liquefaction of bank loans makes possible a banking system that restricts the guaranteed accounts to be backed by 100% reserves and the non-guaranteed deposits to be backed by liquid securitized loan tranches, while retaining the deposit-lending synergy. Such a system is perfectly safe without deposit insurance and it renders banks bankruptcy-remote without sacrificing a bank’s traditional role as a financial intermediary.
  • 详情 Financial Innovations and Banking Reform: Implications for banking without deposit insuran
    Although bank loans themselves are somewhat illiquid because of private information, most of their cashflows are not. Recent financial innovations allow commercial loans to be liquefied via credit derivatives and actual and synthetic securitizations. The loan originating bank holds the remaining illiquid tranche containing the concentrated credit risk, private information rent and the “excess spread” that incentivize the bank to continue to monitor and service the loans. Empirically, we find that the average size of the residual tranche is about 3%, which reflects the size of the “market determined capital” necessary to support the liquefaction. The liquefaction of bank loans makes possible a banking system that restricts the guaranteed accounts to be backed by 100% reserves and the non-guaranteed deposits to be backed by liquid securitized loan tranches, while retaining the deposit-lending synergy. Such a system is perfectly safe without deposit insurance and it renders banks bankruptcy-remote without sacrificing a bank’s traditional role as a financial intermediary.