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The Only Industry That Can't Afford To Lie About Climate Change (Climate Risk Insurance Investing)

Oct 16
7 min read

Category: Economics & Markets


Nothing here is financial advice - I'm not an adviser and I don't know your circumstances. Where I name companies, it's to make a theme concrete, not to tell you to buy anything. Read it as a map of where money is moving, and why.

The people who bet on the future for a living

Here's a thought I find oddly clarifying.

People in heated debate over climate change and climate risk

You can argue about climate change in a pub. You can argue about it in parliament, on the news, at a dinner party. People do, endlessly, and the argument often has very little to do with the evidence and everything to do with which team they feel they're on.


But there is one industry on Earth that cannot afford to argue about it, because its entire existence depends on getting the answer right. Not morally right. Not politically right. Arithmetically right. Get it wrong, and you go bankrupt.


That industry is insurance. And insurers have already quietly reached their verdict on climate change, not in a press release, but in the one language that can't be faked: price.


While the rest of us debate whether it's real, the coldest, most mathematically rigorous, least sentimental industry in the entire economy has looked at the data, done the sums, and started pulling out of entire regions.


They've seen something. And because they vote with their chequebook rather than their mouth, it's worth understanding exactly what they've seen, and, since this is a markets piece, where the money is flowing as a result.


Why insurance is a truth machine


Let me explain why insurers are such a uniquely reliable signal, because once you get this, the whole thing clicks.


An insurance company makes money with a simple bet. You pay them a premium each year.


In return, they promise to pay out if something bad happens, your house floods, burns, blows away. The company's entire profit depends on one skill: correctly estimating how likely the bad thing is.


If they think your house has a 1-in-500 chance of flooding and the real number is 1-in-50, they will charge you far too little, pay out far too often, and go bust. There is no ideology that survives this.


You cannot run an insurance company on vibes, or on what you wish were true, or on what plays well with a particular political base. The flood either comes or it doesn't, and the cheques either clear or they don't.


This makes the industry a kind of truth machine. Insurers employ armies of people, actuaries, catastrophe modellers, whose only job is to work out, as accurately as humanly possible, how dangerous the world is becoming.


They have no incentive to exaggerate (overprice, and competitors undercut you) and no incentive to downplay (underprice, and you go bankrupt). They are pushed, relentlessly, from both sides, toward the truth.


Insurance Risk-Assessment

So when this industry starts behaving as though climate change is real, dangerous, and accelerating, that is not an opinion. That's the single most rigorous risk-assessment system humanity has ever built, telling you what it found.


And what it's doing is sounding the alarm as loudly as an industry can.


The retreat has already begun


This isn't a forecast. It's happening now, and the clearest view is in America, where the climate is hammering specific regions hard.


In Florida and California, exposed respectively to intensifying hurricanes and wildfires, the home insurance market is in genuine crisis. Major insurers have been pulling out entirely, declining to renew policies, or demanding premium increases so steep they amount to a polite refusal.


Across the US, home insurance premiums have risen roughly 30% in just a few years, far outpacing inflation. In the worst-hit areas, cover is becoming simply unavailable at any sane price.


Think about what that actually means, because it's more profound than a line on a bill. An insurer declining to cover a house is that truth machine declaring: we no longer believe this place is a safe enough bet at a price anyone could afford. And a house you cannot insure is a house you cannot easily mortgage, which means a house that becomes very hard to sell, which means an asset whose value can quietly collapse.


The insurance market is, in effect, beginning to reprice the habitability of entire regions, and doing it years ahead of any government admitting the same thing out loud.


This is the leading edge of something enormous: the slow repricing of physical risk across the whole economy. And, this being a markets publication, that repricing is exactly where the investment themes emerge.


Where the money is moving (and some actual names)


You asked me not to be shy about naming things, so I won't be, with the usual, non-negotiable caveat: these are illustrations of themes, not recommendations.


Insurance sector tracker

I don't know your circumstances; I'm showing you where capital is flowing and letting you do your own work. With that said, here are four themes the insurance story is driving, each with real examples so you can see what I mean.


1. Reinsurance - the insurers' insurers.  Behind every insurance company sits a reinsurer: the giant that insures the insurers against catastrophe. As risk rises, the price insurers pay for that backstop ("reinsurance rates") has climbed hard, and that's revenue for the reinsurers. The big listed names here are Munich Re and Swiss Re (both European-listed), and Hannover Re.


The logic: as the world gets riskier, the people selling protection against that risk can charge more for it. The catch, and it's a real one, is obvious, reinsurers also have to pay out when the catastrophes hit, so a bad run of disasters can hurt them badly. This is a bet on them pricing risk faster than it rises, which is their entire core skill, but not a certainty.


2. Parametric insurance - the fast-growing new model. 


Traditional insurance is slow: a disaster hits, you file a claim, an assessor visits, months pass.


Parametric insurance pays out automatically when a measurable trigger is hit, wind speeds above X, rainfall above Y, no claims process at all. It's tailor-made for a climate-disaster world, and the market is growing fast: one report projects it reaching around $7.6 billion by 2031. It's largely delivered by specialist and tech-driven firms rather than one obvious listed pure-play, which makes it more a theme to track than a single stock, but it's one of the clearest growth stories flowing directly from the problem.


3. Catastrophe bonds - where this gets genuinely clever. 


Here's a fascinating corner most people have never heard of. A "cat bond" lets an insurer offload disaster risk onto investors: you buy the bond, you earn a juicy interest rate, but if a specified catastrophe happens, you lose some or all of your money, which the insurer then uses to pay claims.


There's now a $113 billion-plus "protection gap" (the difference between disaster losses and what's insured) that the world is scrambling to fill, and cat bonds are one tool doing it. For investors they've been attractive partly because their returns are uncorrelated with the stock market, a hurricane doesn't care what the FTSE did. You typically access these through specialist funds (names like Fermat Capital run them). The risk is brutally simple and worth stating plainly: if the disaster happens, you can lose the lot. This is sophisticated, genuinely risky territory.


4. Resilience and adaptation - the pick-and-shovel play.  This is the one I find most interesting, and the most durable.


If risk is rising, the world has to spend enormous sums reducing it, flood defences, fire-resistant materials, better drainage, sophisticated climate-risk modelling and data.


The companies that model the risk (firms like Verisk Analytics, a listed catastrophe-data business) and the ones that physically build the defences are selling something the world will need more of every single year, almost regardless of what markets do. It's the least glamorous theme and arguably the most robust, the "sell shovels in a gold rush" logic, applied to a warming world.


The honest caveats, because they matter


I'd be doing you a disservice to make any of this sound easy, so here's the cold water.


Every one of these themes is, in its own way, a bet on disaster, and that's an uncomfortable place to put money, both ethically and practically. Practically, because insurance and reinsurance can be hammered by exactly the catastrophes that make the theme compelling; the thing that proves you right can also be the thing that costs you.


Ethically, because there's something genuinely queasy about profiting from a crisis that will hurt real people, a tension I don't think you should paper over, and one each person has to sit with honestly.


And the eternal rule from every investing piece I write applies with full force: a real, powerful theme is not the same as a good investment at today's price.


These sectors are not secrets; a lot of this is already understood and partly priced in.


Being right that "climate risk is rising" tells you nothing about whether a given reinsurer is cheap today.


Step back from the tickers, because the deepest point isn't any of them...


It's that the insurance industry is a window into the future that most people never think to look through. While the public argument about climate change rages on, largely detached from evidence, the one industry that is paid to be right has already quietly settled the question and started moving billions of pounds accordingly.


The retreat from Florida, the 30% premiums, the explosion of parametric cover and cat bonds, these aren't opinions about the future. They're the price of it, being set in real time by people with their own money on the line.


That's the lens I'd want you to keep. When you want to know what's really coming, stripped of politics, spin and wishful thinking, don't listen to what people say.


Find the person who has to put money on the answer, and watch what they do.


The insurers have shown their hand. The rest of us are just slow to read it.


References


Yale Law Journal - "The Uninsurable Future: The Climate Threat to Property Insurance": https://yalelawjournal.org/essay/the-uninsurable-future-the-climate-threat-to-property-insurance-and-how-to-stop-it


NPR - "Here's how climate change is affecting your home insurance": https://www.npr.org/2025/06/10/nx-s1-5340360/insurance-cost-homes-climate-change-disasters


RiskCoverageHub - "Climate Risk and Insurance Pricing in 2026: How Physical Hazards Are Repricing Every Line of Coverage": https://riskcoveragehub.com/climate-risk-insurance-pricing-2026-physical-hazards/



MarketersMedia / DataM Intelligence - "Parametric Insurance Market Expands as Natural Catastrophe Protection Gap Reaches US$113 Billion": https://news.marketersmedia.com/parametric-insurance-market-expands-as-natural-catastrophe-protection-gap-reaches-usdollar113-billion-or-report-by-datam-intelligence/89199978


APM Research Lab - "In California and Florida, climate disasters are putting pressure on home insurance": https://www.apmresearchlab.org/10x-climate-insurance


Artemis.bm - catastrophe bonds, insurance-linked securities and reinsurance news: https://www.artemis.bm/news/topic/climate-change/

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