Longevity Risk Transfer
Definition
Longevity risk transfer shifts the financial risk that people live longer than assumed, which raises the cost of pensions and annuities, from the holder of that risk to a reinsurer or investors. Forms include longevity swaps, reinsurance and index-based securities. Capital-market structures usually reference public population mortality data and settle over long measurement periods.
Why it matters
Longevity risk is slow and large: it builds over years rather than arriving in one event. Investors in longevity structures take a long-dated view on mortality trends, with returns realized over a decade or more and outcomes set by demographic data rather than catastrophes.
Common misconceptions
- •Longevity risk is not a catastrophe risk; it accumulates gradually.
- •An index-based deal does not track the sponsor's own pensioners exactly.
- •Interest is usually paid during the term, with principal risk resolved at the end.
- •The label is only a starting point. Investor outcomes usually depend on the governing documents, cash-flow priority, valuation policy, disclosure quality, and manager discretion surrounding the term, not just the shorthand definition used in marketing materials.
Technical details
Kortis Capital terms (Swiss Re 2011)
Size: $50 million; completed December 2010.
Index: difference in mortality improvement, UK males 75 to 85 vs U.S. males 55 to 65.
Risk period: eight years from January 1, 2009; single measurement period.
How investors apply the term
Investors usually apply this term by tying the definition back to the controlling documents and then asking which cash flows, rights, restrictions, or valuation assumptions it changes. A useful review looks at the term alongside fees, leverage, liquidity, reporting frequency, and manager discretion rather than treating it as a standalone concept.
The practical diligence test is simple: identify who benefits if the assumption is wrong, who has control when conditions change, and what evidence the investor receives after closing. Terms that cannot be reconciled to documents, cash movements, and monitoring data should be treated as marketing shorthand until proven otherwise.
Frequently asked questions
- What is an example?
- Swiss Re's Kortis Capital, a $50 million securitization completed in December 2010, protected Swiss Re against divergence in mortality improvement between older UK males (ages 75 to 85) and middle-aged U.S. males (ages 55 to 65), using a Longevity Divergence Index based on population data, according to Swiss Re's 2011 primer.
- When can investors lose principal?
- Only at the end. Kortis had an eight-year risk period starting January 1, 2009 and a single measurement period, so 'a principal loss to investors can only occur when data for the full risk period has been captured.'
- How large is the underlying risk?
- Swiss Re's primer cites estimates of total longevity liabilities 'over USD 17 trillion,' more than the insurance sector alone can absorb.