I have seen 2 AM questions on this: CFA 2012 AM #6(e) and Kaplan Schweser Exam 6 AM #8(a) and (b). I don’t see this material covered in the Schweser books though.
It looks like there are typically 5 DB Plan liability components given:
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Current retirees
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Deferred retirees
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Active accrued
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Future wage inflation
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Future wage growth
The available asset classes are Equity, Real Rate Bonds, Nominal Bonds.
It appears to me that:
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For current retirees, deferred retirees, and active accrued, use 100% nominal bonds if payouts are not inflation-indexed. Use 100% real rate bonds if payouts are inflation-indexed.
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For future wage inflation, use 100% real rate bonds by default. If the case tells you the correlation with CPI, then use that as the % of real rate bonds and use nominal bonds for the rest. For instance, on Schweser Exam 6, #8, the case says future wage inflation is 60% correlated with CPI. The answer says to therefore use 60% real rate bonds, 40% nominal bonds.
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For future wage growth, use 100% equities by default. If the case gives you the correlation with equities, then use that as the % of equities, and use nominal bonds for the rest. On the Schweser question, the case says future wage growth is 75% correlated with equities. The answer says to use 75% equities, 25% nominal bonds.
Is this the correct thinking?