Arch Capital Group (ACGL)

Financieras / Seguros

Bermuda-based insurer/reinsurer with three diversified segments (insurance, reinsurance, mortgage), an 82.7% combined ratio and high-teens operating ROE, trading at 9× TTM earnings and ~1.45x book value despite underwriting quality — a discount that reflects the market's fear of reinsurance cycle normalization, not an impaired business.

Moat Compounder estimates the intrinsic value of Arch Capital Group (ACGL) at $209 per share on a five-year horizon. With the stock at $97.16 at 2026-10-12 close, the expected total return is 16.6% per year: very undervalued. The analysis draws on 10-K FY2025 and 8-K (EX-99.2, Q2 2026 financial supplement). Analysis dated 2026-08-04.

Price
$97.16
at 2026-10-12 close
Intrinsic value (5y, base)
$209
Total annual return (5y)
16.6%
Status (nominal)
Very undervalued
Margin of safety
+42%

The essentials

  • Three underwriting segments (Insurance, Reinsurance, Mortgage) with an 82.7% consolidated combined ratio (TTM), and the mortgage segment exceeding $1,000M of underwriting income for the fourth consecutive year.
  • 17.1% operating ROE in FY2025 (18.9% in FY2024), well above the 10% bar, with book value per share growing 22.6% in FY2025 and accelerated buybacks reaching ~$3.5bn TTM after issuing $2bn in senior notes in Jun-2026.
  • Trades at 9× TTM earnings and ~1.45x book value — cheap for the ROE it generates — because the market is discounting rate pressure in property catastrophe reinsurance (January 2026 renewals down -10%/-20%).
Source 10-K FY2025 31-Dec-2025 ·8-K (EX-99.2, Q2 2026 financial supplement) 30-Jun-2026 ·10-Q Q2 2026 30-Jun-2026 ·DEF 14A 2026 (proxy) 2026-03-24
Health: Solid
Price $97 at 2026-10-12 closeMarket Cap $33.9 bnFloat / investments $0 bnP/book value 1.4xCombined ratio 82.7%Core ROE 17.1%P/E (today) 8.6x

Intrinsic value — two valuation methods

Margin of safety
Price market
$97
DCF value today
$355
+265.5% vs price
Multiples value today
$168
+72.6% vs price

By both methods, the value today (DCF $355 · Multiples $168) exceeds the market price ($97).

Pillars of the analysis

The verdict — today vs 5 years

Today — with margin of safety: at $97 trades ~42.1% below its value discounted to today (~$168) — the wide discount we require (≥38%, equivalent to a ~15% annual return); the risk is covered by the margin, not the rate.

At 5 years — Muy infravalorado: the target price ($209) plus dividends yield above the required average return (10%) — the business compounds.

The bridge: the return at 5 years comfortably exceeds the risk-free rate (4.5%) — and the discount reaches the required margin of safety.

Thesis

The business

Arch combines three specialty underwriting lines (insurance, reinsurance, mortgage) with an uncommon capital-cycle discipline: an 82.7% combined ratio (TTM) and 17.1% operating ROE (FY2025), well above the 10% bar. Underwriting quality is real and verifiable in the filing, not an accounting artifact.

The valuation

Valued on P/E over net income to common, with an exit multiple of 13x within the 11-15x band for specialty insurers (§4). With the base-case earnings and buyback trajectory, the 5-year value implies a +17% annual return, Very undervalued versus the current price.

The margin of safety

There is a margin of safety: the market's perception is meaningfully worse than reality. At market price the stock trades at 9× TTM earnings and ~1.45x book value with a high-teens ROE — multiples typical of a declining insurer, not one compounding book value at >15% annually.

What to watch

The central disconfirmer is that rate pressure in property catastrophe reinsurance (-10%/-20% in January 2026) extends and deepens into 2027-2028, compressing the consolidated combined ratio below the 85-90% band assumed in the base case, and that the buyback pace moderates if Bermuda regulatory capital is tightened.

Educational / informational. Does not constitute investment advice.

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