Hiscox (LSE:HSX)'s Reinsurance arm grew gross premiums by 4.5% in the first nine months of 2026 even though the prices it charged fell by 14%, a split that sits at the heart of the insurer's latest update.

A drop of 14% in the price of anything is significant. In reinsurance, the Business of insuring insurers, a fall of that size tells investors a good deal about where the market sits in its cycle. That is the figure Hiscox (LSE:HSX) reported for its Hiscox Re division in a trading statement covering the nine months to 30 September 2026, released on Tuesday 3 November.

The headline numbers for the division were mixed in an interesting way. Gross premiums at Hiscox Re rose 4.5% to $1,133.4m, while rates, a measure of the price charged for comparable cover, fell 14%. In other words, the unit wrote more business in dollar terms even as each unit of risk earned less.

The broader group was more upbeat. Insurance contract written premiums across Hiscox reached $4,437.2m, up 9.5% on a reported basis and 8.1% at constant currency. Investors responded positively: the shares opened 2.8% higher at 1,935p and closed up 2.9%, according to Reuters, on a day when the FTSE 100 fell 1.14% to 10,638.43, its steepest one-day fall in a month.

How reinsurance pricing works

Reinsurers take on a portion of the risks that primary insurers write, particularly large and volatile exposures such as natural catastrophes. In return, they receive a share of the premium. Pricing in this market tends to move in cycles. After years with heavy losses, capacity can become scarce and reinsurers are able to charge more. After calmer periods, fresh Capital often flows in, competition increases and prices tend to soften.

That general pattern provides useful context for the 14% figure, although Hiscox's statement, as summarised in the fact sheet used for this article, does not attribute the fall to any single cause. What it did say is that the period was benign for natural catastrophes, and that this benign experience more than offset marine losses linked to the Middle East conflict. A quieter catastrophe season can be good for current-year results while also putting downward pressure on future pricing, because buyers of reinsurance have less reason to accept rising costs.

Growing Volume while rates fall

How can a division grow premiums when prices are dropping so sharply? There are several general routes. A reinsurer may take larger shares of existing programmes, add new clients, or expand into lines where it sees better value. Exchange-rate effects can also flatter or reduce reported numbers, which is why companies often publish constant-currency figures alongside reported ones.

What makes the Hiscox Re figure notable is that it sits alongside a clear message from the top. Chief executive Aki Hussain said: "We are walking away from underpriced business..." Taken together, those two facts suggest the division is still finding business it considers adequately priced, while declining contracts that fall short. The 4.5% premium growth in reinsurance was slower than the group's overall 9.5%, which is consistent with a more selective stance in the area where pricing has softened most.

The contrast with the rest of Hiscox is instructive:

Retail:premiums up 9.1% at constant currency, with double-digit growth in the third quarter; rates up 1%.

London Market:premiums up 9.9% to $1,050.5m; rates down 5%.

Hiscox Re:gross premiums up 4.5% to $1,133.4m; rates down 14%.

Read top to bottom, the list shows pricing weakening as the business moves from smaller retail policies towards large specialist and reinsurance risks. Retail, with modestly rising rates and accelerating growth, is doing more of the heavy lifting for the group.

What it means for the group picture

For illustration, imagine a reinsurance contract that cost a hypothetical $1,000,000 a year ago. A 14% rate reduction applied to identical cover would bring that price down to $860,000, a difference of $140,000. That simple example shows why a sharp fall in rates makes Underwriting selection so important: the same exposure now brings in noticeably less premium to pay for future claims.

Investment returns are the other half of the Earnings story. Hiscox reported an Investment result of $104.2m, a 1.2% return, compared with $350.8m, or 4.2%, a year earlier. Its reinvestment Yield stood at 5.1%. With interest rates in focus ahead of the Bank of England's decision on Thursday 5 November, where a rise of 25 basis points to 4% is widely expected, the yield available on new investments is a relevant consideration for any insurer, although the fact sheet gives no forecast for future investment income.

Capital returns continued alongside all of this. The $300m buyback announced on 25 February was 81% complete, with 10.3m shares bought for about $241.9m.

Hiscox joined the FTSE 100 on 23 September 2024. On Tuesday it was one of the few bright spots in an index weighed down by miners and banks. The FTSE 350 basic resources index fell 2.6% as copper slid to a multiweek low, and the FTSE 350 banks index dropped 1.6%. The insurer's rise suggests investors focused on overall premium growth and the retail acceleration, rather than on softer reinsurance pricing alone.

Key dates to watch

Wed 4 Nov:Prudential Q3 business performance update, another FTSE 100 financial reporting this week.

Thu 5 Nov:Bank of England MPC decision; a 25bp rise to 4% is widely expected.

Thu 5 Nov:M&G Q3 update.

Thu 12 Nov:ONS first quarterly GDP estimate for July–September 2026, at 7:00am.

Wed 2 Dec:FTSE Russell December review announcement, after the UK close.

The bottom line

A 14% fall in reinsurance rates is a reminder that Hiscox operates in markets where prices can turn quickly. The division still grew premiums by 4.5%, and a benign catastrophe period more than offset Middle East marine losses, but the gap between volume growth and pricing shows why management is emphasising discipline. For now, retail growth and group-wide premium expansion of 9.5% are carrying the story. How the balance between the softer and firmer parts of the business develops will shape how FTSE 100 observers read future Hiscox updates.