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| Title: | 市場不確定性對人壽保險業避險策略之研究
A Study of Market Uncertainty on Hedging Strategies of Life Insurance Industry |
| Authors: | 李承駿
Li, Cheng-Chun |
| Contributors: | 張士傑
李承駿
Li, Cheng-Chun |
| Keywords: | Vasicek 模型
Heston 模型
匯率避險
資本市場波動
Vasicek Model
Heston Model
Currency Hedging
Capital Market Volatility |
| Date: | 2022 |
| Issue Date: | 2022-08-01 17:31:55 (UTC+8) |
| Abstract: | 台灣壽險業長期面對低利率環境，加上國內投資工具有限情況下，增加海外投資的部位，至2022年底國外投資已占資金運用67.2%。匯率風險控管對於壽險業至關重要，良好的匯率避險策略可以有效穩定保險公司的經營。故本研究透過利率變動型壽險商品對保險公司匯率避險策略進行探討。在資本市場情境，以Vasicek模型配適利率變動、以Heston模型模擬股票、以GBM模型模擬匯率，透過均值回歸模型模擬相關係數。釐清: (1)不同匯率避險工具效果 (2)不同時期下壽險業避險策略改變(3)不同經營年期下壽險公司違約風險，及(4)改變預定利率、財務槓桿比率及股債配置比率對於不同避險工具、不同時期、及不同經營年期的敏感度。
實證結果顯示: (1)匯率避險工具成效上，外匯價格變動準備金最佳，自然避險與一籃子避險次之，而無本金交割遠期外匯(NDF)最差。(2)股票市場波動程度對於匯率避險的效果影響頗深。當股市波動程度越大時，越不利於壽險業進行匯率風險的控管。(3)經營年期越久，壽險業面臨的違約風險越大，但這可能是由於躉繳的假設所造成。(4)當預定利率越大、槓桿比率越高、股票配置的比率越多，越不利於壽險業的經營。
Taiwan`s life insurance industry has been facing an environment of low interest rates for a long time, coupled with the limited domestic investment tools, it increases the position of foreign investment. In 2022, the proportion of foreign investment reached 67.2%. Therefore, this study discusses the currency hedging strategy of insurance companies through the interest sensitive life policy. In terms of capital market scenarios, the Vasicek model is used to simulate interest rates, the Heston model is used to simulate stocks, the GBM model is used to simulate exchange rates, and the mean-reversion model is used to simulate the correlation coefficient. The main research is: (1) The effect of different currency hedging instruments (2) The changes of currency hedging strategies in different periods (3) The default risk of life insurance companies under different operating periods, and (4) The sensitivity of assumed interest rates, financial leverage ratio and equity-debt allocation ratio to different hedging instruments, different periods, and different operating years.
The results show that: (1) Foreign-exchange volatility reserves are the most effective instrument for controlling currency risk, followed by natural hedge and basket hedge, and non-deliverable forward (NDF) is the worst. (2) The volatility of the stock market has a profound impact on the effect of currency hedging. The greater the volatility of the stock market, the more difficult to control the currency risk. (3) The longer the operating period, the greater the default risk faced by the life insurance industry, but this may be caused by the assumption of single payment. (4) When the assumed interest rate is larger, the leverage ratio is higher, and the stock allocation ratio is larger, it is not conducive to the stability of the life insurance industry. |
| Reference: | 一、中文文獻
張士傑、黃雅文、洪銳棋、曾暐筑，2018，人壽保險公司之風險及清償能力評估:檢視利率變動型人壽保險，管理學報，35(3)，頁333-354
張士傑、張元晨、鄭宗記、曾毓英，2021，台灣壽險業海外投資上限對其資產配置影響之探討，財團法人台北外匯市場發展基金會專題研究計畫
陳振桐、梁正德，2010，一籃子避險策略之實證研究，風險管理學報，12(1)，頁133-154
蔡政憲、林建智、陳業寧，2017，強化保險業國外投資之匯率風險管理與監理機制之研究，國立政治大學保險業永續發展研究中心
二、英文文獻
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Briys, E. & De Varenne, F. (1994). Life Insurance in a Contingent Claim Framework: Pricing and Regulatory Implications. The Geneva Papers on Risk and Insurance
Theory, 19(1), 53-72
Briys, E. & De Varenne, F. (1997). On the Risk of Insurance Liabilities: Debunking Some Common Pitfalls. Journal of Risk and Insurance, 673-694
Chang, S. C., Lee, Y. K., H. W., & Tu, C. Y. (2020). Allocating Overseas: Risk Assessment of Currency Hedging in Taiwan Life Insurance Industry. Asia-Pacific Journal of Risk and Insurance, 14(1), 1-16
Chen, A., & Suchanecki, M. (2007). Default Risk, Bankruptcy Procedures and the Market Value of Life Insurance Liabilities. Insurance: Mathematics and Economics, 40(2), 231-255.
Cox, J. C., Ingersoll, J. E., & Ross, S. A. (1985). A Theory of the Term Structure of Interest Rates. Econometrica, 53(2), 385-407.
Emmerich, C. (2007). A Square Root Process for Modelling Correlation, Dissertation, University of Wuppertal.
Gouriéroux, C., & Valéry, P., (2004). Estimation of a Jacobi Process.
Grosen, A., & Jørgensen, P. L., (2002). Life Insurance Liabilities at Market Value: An Analysis of Insolvency Risk, Bonus Policy, and Regulatory Intervention Rules in a Barrier Option Framework. Journal of Risk and Insurance, 69(1), 63-91.
Hao, J. C., (2011). The Pricing for Interest Sensitive Products of Life Insurance Firms, Modern Economy, No.2, 194-202.
Heston, S. L., (1993). A Closed-Form Solution for Options with Stochastic Volatility with Applications to Bond and Currency Options, The Review of Financial Studies, 6(2), 327-343.
Mamon, R. S., (2004). Three Ways to Solve for Bond Prices in the Vasicek Model, Journal of Applied Mathematics and Decision Sciences, 8(1), 1-14.
Miao, Z., (2018). CIR Modeling of Interest Rates, Linnaeus University, Sweden,Retrieved from http://lnu.diva-portal.org/smash/get/diva2:1270329/FULLTEXT01.pdf
Moodley, N., (2005). The Heston Model: A Practical Approach with Matlab Code, In Technical Computing Prague, Working paper.
Vasicek, O., (1977). An Equilibrium Characterization of the Term Structure, Journal of Financial Economics, 5(2), 177-188. |
| Description: | 碩士
國立政治大學
風險管理與保險學系
109358011 |
| Source URI: | http://thesis.lib.nccu.edu.tw/record/#G0109358011 |
| Data Type: | thesis |
| DOI: | 10.6814/NCCU202200736 |
| Appears in Collections: | [風險管理與保險學系] 學位論文
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