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Effect of Asset-Liability Duration Matching on Insurance Portfolio Stability

Abstract

Asset-liability duration matching is an important technique in insurance portfolio management because it involves aligning the duration characteristics of investment assets with those of insurance liabilities. Insurance companies hold assets to support future obligations such as claims, annuity payments, and policy benefits. Differences between asset and liability durations can expose insurers to interest rate and reinvestment risks, which may affect the stability of their financial position. This study examines the effect of asset-liability duration matching on insurance portfolio stability. The study will investigate how the degree of alignment between asset durations and liability durations influences the stability of insurance portfolios under changing financial and interest rate conditions. Particular attention will be given to duration gaps, interest rate movements, asset values, liability values, and portfolio risk. The study will consider factors such as asset duration, liability duration, duration gaps, interest rate sensitivity, investment returns, liability maturity patterns, asset maturity structures, and portfolio volatility. Actuarial and financial modelling techniques will be applied to measure the relationship between duration matching and insurance portfolio stability. Comparative analysis will also be used to assess portfolio outcomes under closely matched and significantly mismatched duration structures. A quantitative research approach will be adopted for the study. Relevant insurance investment and liability data will be analysed using duration measures, asset-liability matching techniques, interest rate sensitivity analysis, portfolio volatility measures, and statistical procedures. Scenario and sensitivity analyses will be conducted to examine how changes in interest rates and maturity structures affect the stability of insurance portfolios under different duration matching conditions. The study is expected to reveal that closer alignment between asset and liability durations may improve insurance portfolio stability by reducing exposure to interest rate mismatches and fluctuations in the economic value of assets and liabilities. Significant duration mismatches may increase portfolio volatility and create greater reinvestment or market value risks when interest rates change. The magnitude of the effect is expected to depend on the size of the duration gap, interest rate movements, and the maturity structure of the underlying assets and liabilities. The findings of the study may provide useful information to actuaries, investment managers, insurance companies, risk managers, regulators, and financial analysts. Understanding the effect of duration matching can support more effective investment strategies, improved asset-liability management, better interest rate risk control, and enhanced financial stability. The study may also assist insurers in structuring investment portfolios that are more closely aligned with the timing of their future insurance obligations. The study concludes that asset-liability duration matching is an important component of insurance portfolio stability because appropriate alignment can reduce the financial effects of interest rate movements and maturity mismatches. It is therefore recommended that insurers regularly monitor asset and liability durations, assess duration gaps under different economic scenarios, and adopt suitable asset-liability management strategies to maintain portfolio stability and support the timely fulfilment of insurance obligations.

Keywords: Asset-liability duration matching, insurance portfolio stability, asset-liability management, asset duration, liability duration, duration gap, interest rate risk, investment risk, insurance liabilities, investment portfolio, maturity structure, portfolio volatility, actuarial modelling, financial stability, risk management.