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I've asked two financial advisors about CAT bonds. One had never heard of them and the other said were about as risky as crypto. I guess this is such a niche product that there isn't widespread knowledge about it.

I wonder how much more diversified $ILS could be if it were larger. Would a 10x increase in assets under management give it significantly less volatility because it could do a better job spreading risk around the globe?

There are a lot of interesting dynamics in this market.

For example, CAT bonds are generally tied to the specific natural hazard ("this bond triggers if a hurricane of Category 3 or higher land falls in this segment of Florida") or to industry losses, as estimated by an agreed upon source.

This means that a CAT bond is correlated with, but not directly informed by an insurer's actual loss experience. Traditional reinsurance (so an insurer themselves getting insurance) will usually be tied to specific policies, so their experienced loss is what determines payout.

However, depending on the insurer's policies, traditional reinsurance may be unavailable or much too expensive (either due to the large limit needed, the risk level of the policies, or any number of other reasons). Depending on the trigger, a CAT bond can also pay out faster because you don't have to wait to see the claims from 100k home insurance policies.

From the technical side, most large reinsurers license CAT modeling software from one or both of the same two vendors: Moody's RMS or Verisk. The biggest reinsurers will develop their own models, and there are other modeling vendors that they may license for particular perils (EQEcat for earthquake and KatRisk for flood come to mind), but the big two are pretty widely accepted in reinsurance markets.

That means if your policies are "odd" in some way (uncommon construction type, power facility, etc.), depending on how a reinsurers chooses to model them (or how the model specifically handles them) can have a big impact on your reinsurance pricing. If you know something about your policies that can't be incorporated into a vendor model very well, you may get better pricing on a CAT bond.

These are just some of the considerations! There are so many more things that go into it. But I think it's super interesting to think about.

Source: I work in this side of the industry, specifically in natural catastrophe modeling.

Blown away by the traffic from this post!

For the web designers here please let me know if you noticed anything amiss. Ive had particular issues getting captchas working so please comment if you run into that issue.

Would you consider a followup post about reinsurance assets targeted to derisk potential systemic or liquidity risks in the entire CAT bond market?
Great site, very well written and great explanations of insurance industry dynamics.
What a wonderful read! This is why I come to HN: technical, yet approachable, discussions on topics I didn't even know existed. Thank you for sharing!
This feels like when Selena Gomez explained CDOs in The Big Short.
So, did the Covid 19 pandemic force multiple insurance companies into insolvency?

Also, what does new product development look like for industries like this? How does one search for new financial products? Is it possible for a non-expert to come up with new products in this space?

Are there any books you can recommend for a novice?

Big fan of your content design :)