SD-01.7 — Liability-Driven & Cash-Flow-Driven Strategy

Business Domain: BD-01 Investment Strategy & Allocation (Front office) · Applies: BOTH

Purpose

Frames investment strategy around a contractual liability — the defined-benefit pension paradigm. Where an asset owner with no liability optimises return against a risk budget, a liability-driven investor defines the portfolio against a stream of estimated future benefit payments: a liability-matching (hedging) portfolio that hedges the liability’s interest-rate and inflation sensitivity, and a return-seeking portfolio sized to close the funding gap. Cash-flow-driven investing is the related discipline of holding assets whose contractual cash flows pay the liabilities as they fall due. This Service Domain also owns the de-risking glidepath — the funded-status-triggered evolution of the strategy toward an endgame — which is an operation of liability-driven strategy, not a separate domain.

Service Operations

Ingest and analyse the liability profile — receive the actuary’s projected benefit cash flows and decompose their sensitivity to interest rates and inflation (PV01, inflation sensitivity, key-rate duration along the curve).
Set the hedging strategy and hedge ratios — decide the interest-rate and inflation hedge ratios, often as a function of funded status.
Design the liability-matching portfolio — frame the matching portfolio of bonds, swaps and other instruments that hedges the shape of the liability, not just its total duration.
Size and frame the return-seeking portfolio — set the growth allocation sized to close the funding gap within the scheme’s risk tolerance.
Design the cash-flow-matching strategy — for a cash-flow-driven mandate, frame the buy-and-maintain portfolio whose contractual income meets benefit payments without forced disinvestment.
Design the de-risking glidepath — define the dynamic allocation path, with funded-status trigger points at which growth assets shift to matching assets and the hedge ratio rises.
Monitor funded status against triggers — track assets against liabilities and fire the glidepath steps.
Select the endgame and journey plan — the target end state: self-sufficiency, buyout, buy-in, or transfer to a consolidator.

Inputs and outputs

Inputs: the actuary’s liability cash-flow projection and funding basis; the governing mandate (SD-01.2); capital-market assumptions (SD-01.3); the employer covenant.
Outputs: the matching / return-seeking split, the hedge-ratio targets, and the glidepath with its trigger points — consumed by BD-05 Portfolio Management (which builds the matching and return-seeking portfolios) and by BD-11 Treasury, Cash & Collateral (which manages the collateral and leverage the hedge requires).

Entities

Consumes: Portfolio / Mandate (E-03), Instrument / Asset (E-02) for the hedging instruments, Price & Market Data (E-08); the SD-01.2 governing mandate; the SD-01.3 capital-market assumptions.
Owns: E-27 Liability Profile — the actuarially-projected benefit cash-flow stream with its rate and inflation sensitivity (PV01, key-rate durations) the strategy is built against. E-27 is co-owned, co-equal, with SD-01.8 Insurance Investment Strategy: a single concept (the projected liability stream) with two owners, the pension-scheme view here and the insurance-book view at SD-01.8. The hedging strategy and the glidepath remain analytical artefacts.

Standards

The CFA Institute treatment of liability-driven and index-based strategies. The collateral-resilience discipline — withstanding a defined yield shock without forced de-leveraging — follows the post-2022 supervisory expectations for liability-driven investment. The funding and valuation basis is set by the scheme actuary, outside the investment function, and is a named external input to this Service Domain.

Open extensions

The funding-level model on E-27 — the relationship between the Liability Profile and the asset value that funds it, and the glidepath triggers it drives.
The boundary with SD-11.4 Margin & Collateral Operations on the leverage and collateral the liability hedge consumes.