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Post-Retirement Financial Strategies: Forecasts and Valuation. William F. Sharpe EFMA 2011 Keynote Address. A Post-Retirement Financial Strategy. An initial investment An investment rule Deterministic or stochastic A spending rule Deterministic or stochastic
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Post-Retirement Financial Strategies:Forecasts and Valuation William F. Sharpe EFMA 2011 Keynote Address
A Post-Retirement Financial Strategy • An initial investment • An investment rule • Deterministic or stochastic • A spending rule • Deterministic or stochastic • (Possibly) an annuitization rule
Capital Market Model:Investments • Market portfolio • All relatively liquid global bonds and stocks • Portfolio includes x% of outstanding securities of every issuer • Transactions only made to accommodate new issues, redemptions, etc. • All returns measured in real terms • Riskless Asset • Inflation-protected securities • e.g. Treasury Inflation-Protected Securities (TIPS) for U.S. investors • Assume that zero-coupon bonds exist with maturities for every future year
Distribution Assumptions • Market real returns • independent and identically distributed • Single and multiple-year distributions are all lognormal • Equivalently, logarithm of return is normally distributed • Riskless real returns • Constant real rate through time
State Prices Monte Carlo simulation:n = 1,000,000 scenarios
Expected Utility Time-Separable General
Fidelity Fund Characteristics • “Fidelity Income Replacement Funds combined with the Smart Payment ProgramSM help make it easier to convert a portion of your retirement savings into regular monthly payments • … The Funds are designed to be used in combination with other retirement income products” Source: www.fidelity.com
Lockbox Strategy Characteritics • For each payment date, establish a lockbox with: • An initial value • An initial asset allocation • Rules for any trades prior to the maturity date • At maturity, use proceeds for payment
Lockbox Equivalents for Deterministic Payout Ratio Strategies
Vanguard Managed Payout Funds • Managed Payout Funds … have a "built in" systematic withdrawal plan (SWP) … • A second …feature of Managed Payout Funds is their three-year rolling average payout strategy, which can lead to a more consistent payout level than typical SWPs. • Managed Payout Funds, are designed, at your choice, either to be the sole fund in your portfolio or to complement other investments as part of your overall investment strategy, depending on your personal needs and preferences.
Vanguard Managed Payout Funds Source: www.vanguard.com, April 18, 2011
Asset Allocations • Conservative • no more than 35% stocks • Moderate • 35 to 65% stocks • Aggressive • At least 65% stocks
Withdrawal Rate Criterion • 83 different ‘time-paths’ beginning in 1926, 1927, …, 2008 • “…beyond the year 2008, we just loop back to the returns of 1926 and cycle forward from there.” • “The monthly withdrawal amount …is the highest level of spending in which 85% of these historical paths would have left you with a positive balance at the end of your chosen investment horizon.”