Longevity Risk Management and Static Hedging for Life and Variable Annuities Sixth International Longevity Risk and Capital Markets Solutions Conference.

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Presentation transcript:

Longevity Risk Management and Static Hedging for Life and Variable Annuities Sixth International Longevity Risk and Capital Markets Solutions Conference Sydney Australia 9 and 10 September 2010 Michael Sherris (with Andrew Ngai) Australian School of Business, UNSW

Longevity Risk Life annuities and hedging instruments Market and mortality models Hedging strategies and effectiveness using Longevity Bonds and Derivatives Basis risk and market price of longevity risk Overview

Longevity Products - Retail Life Annuities, Deferred Annuities, Variable Annuities (+GLWB)

Pay actual (population) q x,t in exchange for agreed fixed q F x,t Individual ages and 5-yr Bucketed Longevity hedging: q-Forwards

Payments in line with actual survival probability S 65 (t) Longevity hedging: Coupon Longevity Bond

Static Hedging – ALM ALM interest rate risk only Simulated payments for static hedged portfolio

Static Hedging ALM with longevity derivatives

Static Hedging ALM with 20 year longevity bonds

Static Hedging ALM with longevity swap

Vector Error Correction Model with Regime Switching (RS- VECM) Long run equilibrium, volatility regimes Market Model – Economic Scenario Generator

Market model

–Models mortality rates in cohort direction –Logit age structure for rate changes (stationary) –Age dependence using principal components (errors are not iid) Mortality Model

Portfolio of annuitants – hedging instruments based on population index Mortality Basis Risk

Scenarios

Inflation indexed annuities have substantial shortfall risk from uncertain future inflation Shortfall risk – Life annuities

VA + GLWB provides limited longevity protection – hedging has little impact Shortfall risk – Deferred Life annuities + GLWB

Scenarios – Annuities (Life/Indexed)

Scenarios – Deferred Annuities + GLWB

Basis Risk and Hedging Effectiveness

Hedging Cost and Hedge Effectiveness

Static hedging (ALM) strategies reduce longevity risk particularly for life annuities (immediate and deferred) Much less effective for inflation indexed annuities (inflation risk predominates) VA with GLWB provides limited longevity protection and longevity hedging is of little value q-Forwards have additional basis risk over longevity bonds (mortality rates vs survival probabilities) Basis risk (annuitant vs population, bucketing) not critical for hedge effectiveness Cost of hedging (price of longevity risk) is an important factor for hedge effectiveness (both derivatives and longevity bonds) Summary and Main Conclusions