The Hedge You Can Actually Run
Static versus dynamic gets argued as a sophistication ladder. It is really a question about what your operation can do on a Tuesday — and the wrong answer is expensive in a specific, predictable way.
Every annuity hedging conversation arrives at the same fork. Static or dynamic. It is usually framed as a maturity question — static for carriers still finding their feet, dynamic for the ones who have arrived.
That framing has cost people a lot of money.
What the two actually are
Static. Buy the payoff up front. For an FIA, options purchased at issue that mirror the index credits promised over the term. For a MYGA, duration-matched fixed income plus long-dated protection against extreme rate moves. The cost is known on day one and prices into the product.
Dynamic. Hold the exposure and manage it. Delta-hedge the index with futures, swaps or short-dated options; adjust portfolio duration with rate swaps as the book and the curve move. The cost is realised over time and is not known in advance.
Almost nobody runs a pure version of either. The common shape is a static core covering most of the index-linked obligation, with a dynamic overlay on the residual and on whatever policyholder behaviour did that the pricing assumption did not.
So the real question was never which one. It is how much of the program depends on somebody doing something correctly, repeatedly, under time pressure.
The difference that matters
Static hedging concentrates the hard work at issue. Sizing the hedge budget out of the investment yield, choosing instruments, deciding what fraction of the exposure to cover. Those are difficult decisions made once, by people with time to think, and they are reviewable afterwards.
Dynamic hedging distributes the hard work across every trading day for the life of the block. It is not a harder decision. It is the same decision, made continuously, by an operation — and it only works if that operation holds up.
Here is what a dynamic program actually requires, in the order it tends to break:
- Position data that is right today. Not right at T+1 after the reconciliation runs. If your exposure view is a day stale, your delta is a day stale, and you are hedging yesterday.
- Model output somebody owns. Greeks come out of a model. Somebody has to be able to say what version produced them, when it was last validated, and what it does badly.
- A rebalancing rule with tolerances — and someone with the authority to act inside the window when the rule fires, without assembling a committee.
- Reconciliation between the model's view and the custodian's. Two systems that disagree about what you hold will eventually disagree about what you are exposed to.
- A record of every rebalance, and every decision not to rebalance. The second one is the one nobody keeps.
None of that is exotic. All of it is operational, and it is where programs actually fail — not in the choice of instrument.
The failure mode
The expensive outcome is not a carrier that chose static. It is a carrier that chose dynamic and runs it statically.
Rebalancing happens when somebody gets to it rather than when the tolerance is breached. The model has not been validated in over a year and the person who understood it has left. Breaches occurred and were handled sensibly, but nothing was written down, so six months later nobody can distinguish a considered decision from an oversight.
A program like that carries dynamic hedging's cost and static hedging's coverage while reporting dynamic hedging's precision. It is the worst of the three, and from the outside it looks fine right up until it doesn't.
The cost asymmetry nobody prices
Static hedging's cost is a known number at issue. That is its underrated virtue: it prices into the product and it cannot surprise you.
Dynamic hedging's cost is rebalancing slippage, and slippage is worst in exactly the conditions that made you want the hedge. Volatility raises option premium and widens the gaps you are trading through at the same time. A program budgeted on calm-market execution meets its real cost in the quarter it can least afford it.
That is not an argument against dynamic hedging. It is an argument for knowing which of the two costs your pricing actually assumed.
What neither one hedges
Both approaches leave the same residual, and it is worth naming rather than discovering.
Mortality, lapse, rider utilisation, transfers between crediting strategies — none of these are hedged by any option position. They are actuarial assumptions. When experience diverges, the hedge performs exactly as designed and the program still loses money. Basis risk sits alongside them: fund lineups do not move like the indices you can buy options on, and choosing better-correlated instruments narrows that gap without closing it.
A program that has written those down knows what it is carrying. A program that hasn't will treat the first divergence as a hedging failure, which is the wrong diagnosis and leads to the wrong fix.
Why the regulator asks the same question
Frameworks that grant reserve or capital credit for hedging do not simply ask whether you hedge. They ask for a strategy that is defined in advance and demonstrably followed — the Clearly Defined Hedging Strategy construct in the NAIC Valuation Manual being the clearest expression of it.
Read that as an operations requirement, because that is what it is. The credit attaches to a program you can evidence. Which means the documentation is not paperwork sitting alongside the hedging — it is the test of whether the hedging is real.
The capability question and the regulatory question turn out to be the same question, asked by different people.
The test
Pick a date in the last quarter, at random, and ask four things.
- What was the hedge position that day?
- What did the model say the exposure was?
- Did those two agree, within tolerance?
- If they did not, what was done, by whom, and where is that written?
A program that answers in an afternoon is being run. A program that needs a week to reconstruct it is a static program paying a dynamic budget — and the honest move is either to build the capability or to stop paying for one you do not have.
Both are respectable. Pretending is not.
Scarborough Road works with insurers and asset managers on derivatives governance, hedging operations, and the investment data infrastructure that demonstrates the governance was followed.
General commentary on hedging governance practice. Not legal, actuarial or investment advice, and not a substitute for review against your own products, domiciliary requirements and hedge accounting policies. No specific insurer's program, systems, counterparties or limits are described.
Reference — NAIC Valuation Manual, Clearly Defined Hedging Strategy
