A defined benefit pension plan sponsor tells its investment committee that the plan is "fully funded" using a 7.5% discount rate. The same liabilities discounted at a high-grade corporate bond yield would show a 30% shortfall. Both calculations are defensible under different regimes. The choice of discount rate is one of the most consequential decisions in institutional investing, and it shapes everything from asset allocation to benefit security.
Pension plans evolved to solve a workforce-retention problem and a longevity problem. Employers offered deferred compensation to encourage long careers and provide retirement income. Tax-favored treatment made pensions a major channel of retirement savings, since contributions and gains grow tax-deferred until withdrawal.
The curriculum names three basic types of pension plans:
- Defined benefit (DB) plans promise a formulaic benefit (typically years of service times final-salary average). The employer takes all investment risk.
- Governmental social security plans provide retirement income to previously employed citizens funded by required contributions.
- Defined contribution (DC) plans specify the contributions going in but leave the benefit dependent on investment outcomes.
Common mistakes
- Misreading the progressive social-security system. Earnings caps give low earners a higher replacement ratio than high earners. Assuming benefits rise proportionally with income misreads the design.
- Lumping all SWFs together. A stabilization fund holding 60% global equity and 20% private equity carries substantial market and liquidity risk: the equity can be sold, but possibly at a loss just as the budget needs cash, and the private equity may not sell at all. Check whether the remaining liquid assets cover stressed withdrawals.
- Ignoring governance in SWF scenarios. Maximizing expected return without testing independence, staffing, processes, and costs leaves political and conflict-of-interest risks unexamined.
Bottom line
- DB risk can be viewed asset-only, asset-liability, or integrated with the sponsor; a hedging bucket tracks liabilities while a growth bucket is sized to the sponsor's risk capacity.
- DB leaves investment and longevity risk with the sponsor; DC shifts both to the participant.
- Funded status depends on the discount rate, and liabilities move by about negative modified duration times the yield change.
- Annuity cost rises when rates fall, payments last longer, or income is indexed; deferral cuts it. Expected economic life is finite only when Assets < Payment.
Exam shortcut
DECISION: Pension or SWF vignette? Step 1: name the plan or fund type. Step 2: name the mandate or risk-bearing party. Step 3: pick the allocation that matches the mandate. Skipping these steps, especially chasing yield without naming the mandate, produces an allocation that fails the fund's liquidity or liability needs.
The full lesson (about 9,811 words, 65 min read) adds 3 worked examples, all 4 common mistakes, a self-check, free in the app.
Learning objectives
- institutional owners
- saa risk return
- aa objectives constraints
- ips purpose roles
- ips return risk spending
- ips aa manager selection
- defining endowments
- intergenerational equity
- endowment model
- large endowment performance
- endowment risks
- liquidity rebalancing taa
- tail risk
- pension development types
- pension risk tolerance aa
- defined benefit
- social security
- db vs dc
- annuities retirement
- liability management interest rate
- sovereign wealth sources
- swf types
- swf establishment mgmt
- swf governance political
- swf analysis three
- identifying family offices
- fo goals benefits models
- fo generational goals
- fo macro exposures
- fo income taxes
- fo lifestyle assets
- fo governance
- charity philanthropy
- goals based investing
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