Cedants to benefit from reinsurer M&A

Many of the risk carriers acquired since the later months of 2025 write a significant portfolio of inwards reinsurance, so it is well worth reviewing the deals and their likely impact. In short, this round of M&A should be beneficial for reinsurance buyers. The spate of deals has created larger, stronger reinsurers, but without decreasing the number of markets significantly.

Zurich’s £8.1bn acquisition of Beazley gives the Swiss giant a major Lloyd’s presence. This play is predominantly about primary speciality insurance, but Zurich gains speciality reinsurance exposures and expertise, including in catastrophe and cyber lines, where Beazley is a major player. Zurich has limited pre-acquisition exposure to global reinsurance since the demise of Converium, successor to Zurich Re, before it collapsed under the weight of US liabilities in 2022.

Whilst on the insurance side Zurich’s purchase of Beazley exhibits significant duplication of business – both have large SME commercial portfolios – there’s less duplication of reinsurance books. Reinsurance buyers don’t lose a major market. Instead, Beazley now has $400bn+ balance sheet behind it. All Lloyd’s syndicates enjoy the market’s joint security rating (A+ ‘Superior’ from AM Best), but the possibility that Beazley will routinely offer larger lines is distinct.

Another Lloyd’s-heavy M&A play – but one with much more reinsurance impact – is Starr’s acquisition of IQUW. The latter’s roots are in Lloyd’s syndicates Equity Red Star (later ERS, a motor carrier), and in ARCUS, which was launched in 2016 as an ILS transformer-to-Lloyd’s vehicle for Credit Suisse. They’ve evolved into IQUW, including an eponymous Bermuda reinsurance platform, launched in 2020 with $1bn of capital. Today IQUW Re writes a broad and balanced reinsurance book from the island, with a core strategic focus on speciality treaty reinsurance covering casualty, financial lines, cyber, marine, energy, aviation, political violence, and delegated authority business.

Completion of Starr’s acquisition makes the centenarian insurer (which gave birth to AIG, but is no longer affiliated) the ninth-largest underwriting player at Lloyd’s. Post merger, Starr Re becomes a more important part of the global reinsurance market. IQUW’s Bermuda business gives Starr a much greater presence on the island, which is becoming increasingly important for non-cat, non-casualty business. Starr Re and IQUW had relatively little pre-merger portfolio overlap, so the combination, whilst removing a market, does little to concentrate specific classes of reinsurance risk.

That’s less true of AIG’s $7bn quasi-acquisition of Convex. At present Convex remains operationally independent, and AIG becomes a strategic reinsurer and long-term capital partner. Before the deal, AIG’s inward reinsurance position was comparatively restrained and selective. Following its government bailout in the wake of the 2008 financial crisis, AIG became much less aggressive in reinsurance than it had been. It sold Validus Re to RenRe in2023, but retained Talbot, the Validus Lloyd’s platform, and kept some specialty treaty participations. For the most part, AIG was a reinsurance buyer, not a seller, although Talbot now deploys an AIG stamp in parallel across many classes and lines.

Convex changes AIG’s reinsurance profile. Founded in 2019 by industry legends Stephen Catlin and Paul Brand, with backing from Onex, Convex is one of the world’s fastest-growing specialty re/insurance platforms. Its inward reinsurance profile, built in Bermuda and London, includes property cat P&C business, but is weighted towards the spectrum of specialty treaty and fac business, including structured risks. Convex is a major reinsurance market both in London and Bermuda, and launched a Lloyd’s operation alongside its company-market carrier in 2025.

The Lloyd’s connection features also in the $3.5bn cash acquisition of Aspen by Sompo, which will be integrated into the Japanese giant’s business. Unlike the others, Sompo had noteworthy reinsurance exposures pre-acquisition, in part held over form Endurance Specialty, which the Japanese insurer bought in 2016 for $6.3bn. However, Sompo later put the Endurance syndicate into runoff.

Aspen too has a substantial and well-established third-party inwards reinsurance book, including through its Lloyd’s platform, comprising a balanced portfolio of peak-perils catastrophe reinsurance and retrocession, and specialty treaty reinsurance including casualty. Like the other M&A, Sompo’s acquisition of Aspen creates a larger, better capitalised reinsurer. However, it is the first of these examples to potentially diminish cedant choice by combining formerly competing reinsurance platforms.

A further deal is Radian’s acquisition of relative newcome Inigo for $1.7bn. Inigo is another Lloyd’s operation, and had no pre-acquisition exposure overlap with Radian, a US mortgage insurer that sought diversification into specialty re/insurance. Inigo’s reinsurance book is another balanced portfolio of specialty treaty, property cat, casualty, and some structured risk. Like Aspen, it is a material provider of cat capacity, which it will soon offer against a larger balance sheet.

In a similar vein, Howard Hughes Holdings, which despite its pedigree as the corporate vortex for the eccentric aviation magnate is now primarily a real estate company, has agreed to acquire Vantage for $2.1 billion. Formerly a pure-play reinsurer, Vantage launched late in 2020 and has since diversified into specialty insurance risk, and will benefit from Hughes’ $11.25bn balance sheet.

Meanwhile, cedants are trending towards smaller reinsurance panels with larger lines from each participant. These M&A deals supports that. They have transformed smaller target companies into larger, better capitalised, more diversified risk carriers with the potential to write larger lines. Sompo’s acquisition of Aspen is the exception. Whilst the smaller company will certainly be strengthened, it is the one recent example of M&A that reduces market choice for reinsurance buyers by combining competitors.

It’s worth mentioning another deal, one which is neither merger nor acquisition. In March Berkshire Hathaway (BH), the world’s largest non-life insurer according to AM Best, entered a strategic partnership with Tokio Marine Holdings (TMH), which is certainly among the top 20, and the top 10 for P&C. Tokio Marine notably owns Kiln at Lloyd’s (TMK) and Huston Casualty Company (TMHCC), which are major diversified reinsurance markets, particularly through their Lloyd’s platforms. Neither the size nor the nature of the TMH aggregate group inwards reinsurance portfolio are disclosed, but it is widely thought to exceed $10bn. BH, meanwhile, writes at least double that through subsidiaries General Re and BH Reinsurance Group, including TransRe, and probably very much more. Again, the total is not disclosed.

Under the partnership, BH subsidiary National Indemnity has bought 2.49% of TMH for $1.8bn. Joint statements say the relationship will focus on reinsurance, global M&A collaboration, and long-term investment. TMH said: “The two companies will collaborate on global strategic investment opportunities, including M&A, executing joint investments to drive sustained business expansion.” Also revealed is a whole-account quota share which BH will provide to TMH. Details are scant, but TMH has reportedly discussed a $10bn acquisitions war chest, and Berkshire Hathaway is famously sitting on $380bn.

Whether this newly formed team makes further acquisitions or not, both have in the past given subsidiary risk carriers a significant degree of independence. They are extremely unlikely, in our opinion, to merge carriers across the new partnership, but are equally unlikely to ignore potential accumulations, particularly of peak-perils exposures.

Both companies have repeatedly demonstrated a long-term strategic view. The partnership is one to be watched over the years ahead. Together Berkshire Hathaway and Tokio Marine hold the potential to become a market-influencing force in reinsurance M&A.