Eberhard Mueller of Hannover Re was riding the London Underground from Heathrow Airport to the City in March 1994 when he conceived an idea: what if you could transfer catastrophe risk to capital markets through bonds?
Hurricane Andrew had struck Florida in 1992, inflicting $27 billion in damages, $15.5 billion covered by insurance.
The carnage:
- At least sixteen insurance companies became insolvent
- Eight failed immediately
- Three more collapsed the following year
- Large private insurers like Travelers and Allstate froze their business in Florida
- Insurers in Florida had a negative return on net worth of -714.9 percent in 1992
The industry had pictured a worst-case scenario in the $7 billion range. One early hurricane model estimated the maximum would cap out around $60 billion, but that number seemed absurdly high. Insurers had failed to track property value growth. Coastal property valuations had gone up considerably in preceding decades. Rebuild costs reflected those appreciations.
More than 650,000 claims were filed after Andrew. It took the industry a decade to break even.
When Mueller heard from Citibank that they were enthusiastic about his idea, he took it to the board. His luck was that the chief executive, Michael Reischel, was an actuary by education. Reischel immediately believed in the idea because of the diversification benefits it would give both parties. Mueller got permission to form a working party comprising their legal adviser, investment officer, underwriter and himself. Together with Citibank, they created the first catastrophe bond, an $85 million issue in 1994.
Swiss Re followed in 1995. By 1997, multiple insurers were accessing broader financial markets through these instruments.
The demand for natural-disaster insurance by households and businesses meant new capital had to flow into reinsurance. These early transactions provided investors an opportunity to assume catastrophe risk on a securitized basis for the first time.
| Catastrophe Bond Market Growth | |
|---|---|
| 1998-2001 annual issuance | $1-2B |
| Post-9/11 annual issuance | >$2B |
| 2017 minimum average spread | Historic low |
| 2023 issuance | $15.4B (record) |
| Outstanding notional (2025) | ~$56B |
| Growth since 2020 | +75% |
By attracting alternative capital sources, catastrophe bonds exerted downward pressure on reinsurance prices while increasing total capital available. This abundance of capital created constant downward pressure on spreads until the historical minimum average was reached in 2017.
Florida's population grew 51% between 1992 and 2016. The number of buildings over fifteen stories in Miami-Dade tripled, many built directly in Andrew's surge footprint.
Some 4.2 million homes were bought in Florida coastal counties between 2000 and 2020, with 258,000 units less than a quarter mile from the coast, averaging just nine and a half feet above sea level.
In 2017, Hurricanes Harvey, Irma, and Maria brought dangerous and immensely destructive conditions to the Caribbean and continental United States. Combined, early indications suggested between $70 billion and $110 billion in losses might be paid out by the insurance industry.
Led primarily by these hurricanes, nineteen separate catastrophe bond tranches were triggered in the third quarter of 2017, leaving as much as $1.4 billion in outstanding issuance vulnerable to losses. Multiple bonds were exhausted—complete loss of principal. This was the worst period for catastrophe bond investors in the market's twenty-year history.
Despite historic losses at the end of 2017, new catastrophe bond issuance in the first half of 2018 reached $9.4 billion, rivaling 2017's record start.
All direct catastrophe bond investors have been institutional:
- Specialized catastrophe bond funds
- Hedge funds
- Investment advisors
- Life insurers
- Reinsurers
- Pension funds
After 2017 losses, many managers witnessed increases in assets under management as the investor community anticipated spreads would rise.
A repeat of Andrew today could cause as much as $100 billion in insured losses based on changes in exposure and population since 1992, coupled with updated predictions of wind and storm surge impact.
Mueller's idea on the Underground spread the risk globally. Insurers could access capital markets instead of collapsing under mega-disasters. The market has grown to $56 billion outstanding. Coastal development has grown alongside it. The distance between financial instruments and actual storms keeps widening.