Insurance-Linked Securities: Investing in Catastrophe

A primer on the one asset class driven by nature, not by financial markets

Suhaimi Zainul-Abidin

Chief Executive Officer, Quantedge Capital

Lee G Ping

Vice-President, ILS Quantitative Research, Quantedge Capital

In 2025, the global catastrophe bond market delivered its third consecutive year of double-digit returns, with the benchmark Swiss Re Cat Bond Performance Index gaining 11.4%. This strong performance highlights a key feature of the asset class: a cat bond suffers a loss of principal only when a defined set of disasters triggers a payout. While insured catastrophe losses in 2025 were only slightly below recent averages, the absence of any major US hurricane landfalls or large earthquakes meant the cat bonds experienced low impairment rates, with bondholders simply collecting their coupons.

In contrast, broader financial markets spent the year unsettled by tariffs, currency swings, and geopolitical shocks. None of these occurrences have the ability to influence where a storm makes landfall. This structural independence forms the core investment case for insurance-linked securities (ILS): instead of returns driven by the economy, corporate earnings or government credit, ILS responds to the forces of nature, and thus represents a fundamentally distinct and uncorrelated asset class.

What is an insurance-linked security?

Almost every investment can be viewed as a bet on human economic activity. Buy a share and you are betting a company grows its earnings; buy a bond and you are betting a borrower stays solvent enough to repay; hold a currency and you are betting on one economy’s strength against another. In each case, the return depends on how some company, government, or economy performs. An insurance-linked security breaks that pattern by requiring the investor to underwrite a physical outcome.

We illustrate the point with examples drawn from catastrophe bonds, which are perhaps the simplest and most widely understood form of insurance linked securities. A wildfire catastrophe bond issued for an energy utility illustrates this distinction clearly. Its performance is unrelated to whether the underlying utility is profitable, well capitalized, or successfully transitioning to clean energy sources. Performance of the bond relies solely on whether a specific physical event occurs, such as a severe blaze [for which it is found liable] burning through its service territory.

ILS exist because insurers themselves cannot retain all of the exposure they take on from policyholders, sometimes because it is too capital intensive to do so. To manage risks like a homeowner’s flood exposure or damage to a manufacturer’s premises in an earthquake, insurers pass a portion of their risk to reinsurers, or directly into the capital markets via an ILS.

Pension funds, asset management firms, including specialist ILS funds, and even sovereign wealth funds can step in as the ultimate risk-bearers. They are compensated for bearing the financial risk of a set of defined events, such as European windstorms or wildfires in California. By absorbing this volatility, capital markets add to the reliable coverage that primary insurers and reinsurers, and the businesses and households they protect, can access in the first place.

Catastrophe bonds - how do they work?

The most accessible and liquid corner of the ILS market is the catastrophe bond. It is a high-yield or investment grade fixed income security issued through a three-party structure: a sponsor, typically the insurer or reinsurer transferring the risk, a special-purpose vehicle that issues the bond, and the end investors. The vehicle is fully collateralized for the life of the deal with the proceeds held in trust and invested in risk-free assets, which removes counterparty credit risk. A cat bond’s total yield combines the interest earned on the underlying collateral with the risk premium paid for the catastrophe exposure.

A deal resolves in one of two ways. If no qualifying event occurs during the term, the trust is liquidated at maturity, and investors get their principal back alongside all collected coupons. Conversely, if a triggering event does occur, the vehicle releases funds to the sponsor, and investors absorb the corresponding loss.

How that payout is defined varies. Some bonds settle on indemnity, covering the entirety of the sponsor’s actual losses; others trigger off an industry-wide loss index, or off pure physical parameters such as windspeeds or on levels of seismic activity. Such parametric triggers pay out quickly and transparently but leave the sponsor potentially exposed to basis risk. Conversely, indemnity triggers track actual losses but take longer to settle. Understanding these structures and their impacts on the economics of a transaction are important considerations for both sponsors and end investors.

Historical benchmark indices reflect the performance dynamics of cat bonds, displaying a steady upward trajectory interrupted only occasionally by major loss events. Hurricane Ian in 2022 and the Los Angeles wildfires in 2025 remain the only significant intra-year drawdowns of the past five years. Outside of such episodes, the index has delivered positive returns in all but one calendar year since its inception in 2002 (that exception being 2022). Notably, 2023 through 2025 marked three consecutive years of double-digit gains, an unprecedented run in the market’s history. After a stretch of costly years in the broader reinsurance market, capital retreated, and those who remained in the market repriced risk sharply higher. The spread multiples paid on new cat bonds widened to levels not seen in years. Investors who stepped in were therefore paid more per unit of risk. This pattern of infrequent, sharp drawdowns against a long-run upward trend is characteristic of the ILS market.

Standout characteristics of insurance-linked security

ILS is the purest form of risk premium

Quantedge’s core investment thesis rests on a fundamental market concept: risk premia. Just as the equity risk premium compensates investors for the risk of falling stock prices and the term premium compensates bondholders for holding longer-duration assets, ILS operates on the same logic. Investors are compensated specifically for the probability of a storm making landfall or a fault line rupturing with enough force to trigger a payout. But unlike the equity or term risk premia, the ILS risk premium pays for bearing the risk of natural events, entirely outside the domain of corporate finances or macroeconomic policy.

This dynamic makes ILS the purest form of risk premia available in liquid markets. Corporate debt, earnings, and monetary policies have no bearing on the investor’s returns and the risk they are paid to bear. The exposure is the physical event itself.

In the cat bond market, the premium can be observed directly, as the spread a bond pays over the expected loss which well accepted catastrophe models assign. Such spreads can often a sizeable multiple of that expected loss. When capital is scarce and recent losses are fresh, the multiple widens. When capital floods back in, it compresses. Harvesting the catastrophe risk premium well therefore means being disciplined about investing when the compensation is generous versus when it is thin. In the cat bond market, the premium is quoted directly, as the spread a bond pays over the expected loss its own models assign — often a sizeable multiple of that expected loss. When capital is scarce and recent losses are fresh, that multiple widens. When capital floods back in, it compresses. Harvesting the catastrophe risk premia well therefore means being disciplined about investing when the compensation is generous and not when it is thin.  

Diversification that holds up under stress

The clearest evidence of the diversifying nature of ILS comes from episodes that punished conventional portfolios. In 2020, as the pandemic wiped roughly a third off global equities in a matter of weeks, cat bonds were unimpaired and the index still finished the year in positive territory (it was down by less than 1% in March 2020, when financial markets were at their most volatile that year). In 2022, the classic balanced portfolio had its worst year in decades: equities and bonds fell together, down double digits apiece, as inflation and rising rates hit both asset classes at once. The cat bond index had its only losing year in two decades that same year, but for an entirely unrelated reason, Hurricane Ian, and the drawdown was around two per cent rather than the seventeen a 60/40 investor absorbed. The point is not that ILS never falls. It is that when it falls, it falls for reasons that have nothing to do with why everything else is falling. As mentioned previously, 2025 illustrates the point clearly, with a double-digit return against the backdrop of a year of tariffs, currency swings, and geopolitical upheaval.

Crucially, this diversification extends beyond the asset-class level and exists inherently within the ILS market itself. Exposures are specific by design, defined along two primary axes: a region (the country or area of risk) and a peril (the specific triggering event). This granularity allows for precise risk allocation across distinct categories, such as US hurricanes, Japanese earthquakes, or European winter storms. Because these events tend to be physically uncorrelated, they operate as distinct positions with largely independent triggering events. Consequently, a well-constructed ILS book is not a single, concentrated wager on a single global disaster. It is a carefully engineered portfolio exposed to optimized levels of uncorrelated risks.

Pricing the unpredictable with catastrophe models

Constructing an optimally diversified portfolio relies on the ability to accurately price each underlying risk. This is the domain of the catastrophe model. These advanced simulations translate physical events into estimated financial losses, drawing on the combined expertise of meteorologists, civil engineers, statisticians and actuaries and data scientists. By running thousands of simulated disaster scenarios against a fund’s actual exposures, the model generates a full distribution of possible outcomes and their associated probabilities. But a given model only produces a single view of risk. In fact, the market leans on a handful of commercial vendor models, and those models can disagree, sometimes materially, on the same peril. This is because each model embeds its own assumptions about hazard, vulnerability, and exposure. Therefore, the edge does not come from licensing and operating a model. It comes from forming an independent and fully informed view of the risk: stress-testing the vendors’ assumptions, blending them where they diverge, and layering in proprietary data.

ILS at Quantedge

Quantedge entered the ILS space in 2011, initially deploying capital into catastrophe bonds. By 2014, the strategy had evolved to include a meaningful allocation to reinsurance sidecars. In subsequent years, the portfolio deliberately shifted toward higher yielding ILS products, including fronted reinsurance and collateralized retrocession contracts. This shift allowed the fund to capture risk premia more closely aligned with our target risk-return profile, optimizing both the size and the distribution of our returns, while greatly expanding our addressable market.

This strategic progression reflects two core tenets at Quantedge: ultra-diversification and the systematic harvesting of economically grounded risk premia. We have noted that the performance of the asset class is structurally uncorrelated with the rest of the portfolio. That lack of correlation is precisely why the asset class fits the way we build portfolios. Since the Quantedge investment portfolio is sized to hit a total risk target, a return stream whose risk is largely orthogonal lets us add expected return without loading on more of the exposures that already dominate the book. Such diversification proves its worth when it is most needed, when conventional markets might be falling together.

Furthermore, the Quantedge ILS book operates on the same brand of quantitative logic and rigour that we apply across equities, bonds, currencies and commodities. We leverage principles of portfolio construction and the greater predictability that arises when risk is spread across hundreds of contracts covering independent perils in diverse geographic zones, effectively functioning like a highly diversified reinsurer. We also form our own view of each risk rather than trading on catastrophe model defaults. The portfolio is managed dynamically, systematically tilting allocations toward the most attractively priced perils at any given time. Moreover, by staffing our research team with credentialed actuaries, the fund secures a distinct advantage in a market where deep technical expertise, rather than simply capital, remains the true barrier to entry.

The bigger picture

At its core, insurance solves a fundamental problem. Capital must be deployed to absorb the risk of catastrophic events so that businesses and households do not have to bear such risks alone. Insurance-linked securities represent the modern, securitised version of this form of risk transfer. Today, these physical risks are modelled, priced, and traded with the same rigour applied to traditional financial assets.

For a systematic portfolio, the appeal of ILS is pragmatic. Its value lies in a return stream that responds to hurricanes and earthquakes instead of macroeconomic factors in the broader markets. By systematically isolating and harvesting these purely physical risk premia, we secure a durable return driver that conventional markets cannot replicate. ILS is thus not just a useful alternative allocation within the Quantedge portfolio, it is a natural fit for our strategy – one predicated on ultra-diversification and risk premium extraction.

Sources

● Swiss Re Institute. (2026). sigma 1/2026: Natural catastrophes in 2025: the persistent rise of wildfire and storm risk. https://www.swissre.com/institute/research/sigma-research/sigma-2026-01-natcat-2025-wildfire-storm-risk.html

● Swiss Re Capital Markets. (2026). Insurance-Linked Securities Market Insights, July 2026. https://www.swissre.com/our-business/alternative-capital-partners/ils-market-insights-july-2026.html

● Artemis.bm. (2026, January). Swiss Re Global Cat Bond Performance Index returns 11.40% for 2025. https://www.artemis.bm/news/swiss-re-global-cat-bond-performance-index-returns-11-40-for-2025/

● Artemis.bm. (2025, January). Swiss Re cat bond Index delivers 17.29% total-return in 2024, second-highest ever. https://www.artemis.bm/news/swiss-re-cat-bond-index-delivers-17-29-total-return-in-2024-second-highest-ever/

● Morningstar. (2024). Catastrophe Bonds as Portfolio Diversifiers: Pros and Cons. https://www.morningstar.com/bonds/catastrophe-bonds-strategic-diversifier

● Morningstar. (2024). Naysayers Were Wrong About the 60/40 Portfolio. Here’s Why. https://www.morningstar.com/portfolios/why-naysayers-were-wrong-6040-portfolio

● Cummins, J. D., & Weiss, M. A. (2009). Convergence of insurance and financial markets: Hybrid and securitized risk-transfer solutions. Journal of Risk and Insurance, 76(3), 493–545. https://doi.org/10.1111/j.1539-6975.2009.01311.x

This article is for general information only and does not constitute investment advice, a solicitation for investment nor an offer for sale of shares issued by any fund or company. Commodity interest trading involves substantial risk of loss and is not suitable for all investors. Past performance may not be indicative of future performance.  

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