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ACGL Arch Capital Group

insurance · valued with opus medium conviction · deep-dived 2026-10-01

STRONG BUY
Intrinsic value$106.04
Price (at call)$92.36
Margin of safety +14.8%
vs market (rating basis) +57.1%

A premium underwriter priced for a cycle downturn it is built to survive; the pullback widens the discount.

The story

Arch is a top-tier specialty P&C, reinsurance and mortgage insurance underwriter, with disciplined cycle management and a diversified earnings base. Trailing ROE of about 20% reflects peak hard-market pricing, unusually strong mortgage-insurance results and elevated investment yields. Property-cat and specialty pricing is now softening, so returns should fall back toward the mid-teens. The balance sheet is conservatively reserved and only modestly levered, and the roughly 7% price pullback since my last take looks like cycle anxiety rather than any damage to the franchise.

I am keeping the drivers unchanged because nothing material has changed. Normalized ROE of 13.5% sits well below the 20% peak but above the roughly 9% cost of equity, consistent with Arch's through-the-cycle record. Book growth of 8% in year one reflects retained earnings, partly offset by buybacks as the market softens, and terminal growth of 4% stays below the risk-free rate.

Value drivers

Return on equity (normalized)13.5%
Book-value growth (Y1)8.0%
Terminal book growth4.0%
Beta0.85
Failure probability1.0%
Cost of equity9.1%

Valuation bridge

PV of excess returns6.34B
PV of terminal excess6.83B
Equity value36.18B
÷ shares → per share$106.04

News

neutral +0.15 · 8 articles

  • THG Outperforms Industry, Trades at a Premium: Time to Buy or Exit?
  • Arch Capital Group (ACGL) After The Pullback Is Its Underwriting Story Still A Bargain
  • Howard Hughes Stock Rises After Executives Buy Shares Following Ackman Post
  • Arch Capital Lags Industry, Trades at a Discount: Time to Hold or Exit?
  • KNSL Stock Falls 18.3% in a Year: Here's What Investors Should Know
  • Arch Capital's Mortgage Segment Emerges as an Earnings Stabilizer
  • RLI Rises 6.2% in 3 Months: Time to Hold or Fold the Stock?
  • Arch Capital Group (ACGL) Stock Declines While Market Improves: Some Information for Investors

Projected excess returns on equity

YrBook equityROEExcess returnPV
123.38B 13.5%1.02B 938.74M
225.25B 13.2%1.04B 873.01M
327.15B 13.0%1.05B 805.19M
429.08B 12.7%1.04B 736.09M
531.02B 12.4%1.03B 666.47M
632.95B 12.2%1.01B 597.12M
734.86B 11.9%973.93M 528.75M
836.72B 11.6%928.69M 462.06M
938.51B 11.4%872.17M 397.68M
1040.22B 11.1%804.47M 336.16M

Key risks

  • Reinsurance and property-cat rates soften faster than expected, compressing underwriting margins
  • A large catastrophe year or adverse development on casualty reserves from the 2015-2019 accident years
  • A US housing downturn that hurts the mortgage insurance segment

Catalysts

  • Continued buybacks below intrinsic value as surplus capital builds
  • Steady combined ratios through the softening cycle, which would show that underwriting discipline holds

History

DatePriceIntrinsicMoSRating
2026-10-01$92.36 $106.04 +14.8% STRONG BUY
2026-08-31$98.84 $111.93 +13.2% STRONG BUY
2026-07-29$106.48 $111.68 +4.9% STRONG BUY
2026-06-25$94.92 $113.61 +19.7% STRONG BUY
2026-06-23$92.04 $115.89 +25.9% STRONG BUY