ACGL vs ESNT: How Arch Capital Group Ltd and Essent Group Compare (2026)

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: ESNT is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. ACGL and ESNT share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined ACGL and ESNT exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Arch Capital Group Ltd. is a Bermuda-headquartered holding company that writes property and casualty insurance, reinsurance, and mortgage insurance worldwide. Its Insurance segment covers specialty lines such as professional liability, excess and surplus casualty, property, and workers compensation; the Reinsurance segment writes casualty, property catastrophe, marine, aviation, and other specialty treaties; and the Mortgage segment provides U.S. primary mortgage insurance plus credit-risk-transfer and international mortgage reinsurance. This three-legged structure lets Arch shift capital toward whichever market offers the best risk-adjusted returns, a flexibility that has been central to its long-term track record of growing book value per share.

Full ACGL guide

Essent Group Ltd (NYSE: ESNT) is a Bermuda-domiciled holding company whose main subsidiary, Essent Guaranty, writes private mortgage insurance in the United States. Private mortgage insurance covers the lender (and ultimately Fannie Mae or Freddie Mac) against loss when a borrower who put down less than 20% stops paying, which is what lets a first-time buyer close with 3% to 5% down. Essent earns a small annual premium on each insured loan and keeps earning it until the borrower refinances, sells, or builds enough equity to cancel coverage. Insurance in force was about $247.9 billion at the end of March 2026, with a weighted average FICO of 747 and persistency of 84.7%, meaning the vast majority of the book renews each year. Two smaller arms sit alongside it: Essent Re, a Bermuda reinsurer that takes GSE credit risk transfer and, more recently, third-party property and casualty business including a Lloyd's program, and Essent Title Insurance (the former Agents National Title, bought from CoreLogic in 2023) with the Boston National Title agency.

Full ESNT guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• ACGL drivers: Diversified underwriting engine; Mortgage insurance cash engine.
• ESNT drivers: Insurance in force and persistency; Credit performance and reserve development.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: As an insurer, Arch is exposed to large catastrophe losses (hurricanes, wildfires, earthquakes) that can produce volatile quarterly results despite reinsurance protection. For ESNT, essent's core exposure is the housing and employment cycle, and the current low loss ratio assumes home equity keeps converting would-be claims into sales.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick ACGL if you believe its drivers more; ESNT if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the ACGL and ESNT guides.

ACGL. Arch reported first-quarter 2026 revenue of about $4.5 billion and net income of roughly $1.0 billion, with a consolidated combined ratio near 82% helped by favorable reserve development. The low trailing earnings multiple reflects both the quality of the underwriting franchise and market caution about softening insurance pricing. Figures are approximate and trailing metrics move with catastrophe losses and reserve adjustments quarter to quarter.

ESNT. Essent carried a market capitalization near $6.1 billion on roughly 92 million shares in early August 2026, putting the stock at about 9 to 10 times trailing earnings and a modest premium to its $61.20 book value per share. Q1 2026 net income was $171.8 million, or $1.82 per diluted share, on revenue of $336.1 million, with an annualized return on average equity of 12.0%. Second-quarter results were scheduled for August 7, 2026, so figures here reflect the March quarter. Valuation numbers are approximate and move with the share price.

Headline figures (approximate, JULY 2026): ACGL shows revenue (ttm) ~$18B, net income (ttm) ~$4.3B, q1 2026 eps (diluted) ~$2.88, market cap ~$33-36B; ESNT shows net premiums earned (q1 2026) ~$260M, net income (ttm) ~$686M, diluted eps (ttm) ~$7.03, book value per share ~$61 (Mar 31, 2026).

ACGL and ESNT are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined ACGL and ESNT exposure against your real portfolio. It is not an investment adviser.