Ategrity Specialty Insurance Co Holdings (ASIC) stock intrinsic value fair value estimate & owner earnings analysis

Ategrity Specialty Insurance Company Holdings writes excess and surplus (E&S) lines property and casualty insurance for small and medium-sized US businesses in retail, real estate, hospitality and construction, sold only through wholesale brokers. It began underwriting in 2018, listed in 2025, and remains majority-controlled by Zimmer Financial Services Group, an affiliate of whose investment manager runs part of the portfolio. In 2025 it wrote $581.5 million of gross premium (about two-thirds casualty, one-third property with little catastrophe exposure), earned $361.7 million of net premium at a combined ratio of 88.2%, and reported $76.1 million of net income. Through the first half of 2026 net earned premium rose 32.5% to $219.0 million, net income was $58.9 million (of which $28.1 million pre-tax was investment gains), and equity reached $664.4 million, about $13.30 per share. Earnings level. We measure the cash an owner could take out: operating cash flow, less the cash that comes from loss reserves and unearned premiums building up (that money belongs to policyholders), less stock pay and maintenance capital spending. On that basis the company earned $38.1 million in 2025 ($0.82 per diluted share) and $15.2 million in 2024 ($0.42). This is well below reported profit because it excludes investment gains (mostly from the Zimmer-managed Utility & Infrastructure fund), bond discount accretion and other non-cash investment income, and because cash taxes ran above book taxes. With only two years of history, and 2024 belonging to a smaller, pre-IPO capital base with a $5.4 million reserve strengthening, we anchor on 2025 alone. Owner earnings roughly doubled in 2025; for 2026 we assume about $50 million (roughly $1.00 a share on 49.9 million diluted shares), a slower step that is largely secured because $282 million of already-written unearned premium sat on the balance sheet at year-end and first-half loss ratio held near 59%. Beyond what is already written, premium growth depends on continuing to win share in a market that is currently favourable, which is not yet a proven, cycle-tested record, so the base case credits none of it. The company has no funded debt (its letter-of-credit facilities were terminated in 2025 and cash interest in 2026 is negligible); as an insurer, its earnings are valued after interest and nothing is subtracted. Base case ($14.25 per share; business worth about $712 million, no debt). 2026 owner earnings of about $50 million, about $47 million in 2027, then the underwriting margin settles to a through-the-cycle combined ratio near 93% on a flat book of about $440 million of earned premium, leaving about $42 million a year. That level continues indefinitely because the A- rated E&S licence, 48-state distribution and broker relationships are a working franchise, but we assume no growth beyond premium already written. Bear case ($7.25 per share; business worth about $361 million, no debt). This is a full soft-market cycle of the kind E&S carriers went through from 2005 to 2011, when premiums fell and combined ratios rose into the 100s: earned premium falls to about $330 million and the combined ratio runs about 102% for four years, cutting owner earnings to about $11 million a year. Layered on top are a casualty reserve shortfall like the industry's 2015-2019 accident-year social-inflation charges (about 8% of the $584 million reserve, roughly $37 million after tax) and a 30% drawdown in the $190 million Utility & Infrastructure fund (about $45 million after tax), from which the company has limited withdrawal rights. Earnings then recover to about $28 million a year at a 96% combined ratio. Capital stays ample throughout (premium is under one times equity), so no dilution is assumed. Bull case ($26.35 per share; business worth about $1.31 billion, no debt). The 88-89% combined ratio of 2025 and early 2026 holds, earned premium reaches about $520 million on the current gross-premium growth pace before levelling off, bond accretion is counted as the real yield it is, and the affiliate fund earns about 8% a year as its record suggests, giving about $81 million a year from 2028. What could make this wrong. The earnings record is two years old and has never been through a soft market or a bad casualty reserve cycle; 46.5% of premium comes through the three largest wholesale brokers; about 29% of equity sits in an affiliated hedge fund focused on utilities and infrastructure, and another $106.5 million is lent to Zimmer affiliates (a $94 million 5.5% loan due 2032 and a $12.5 million 7.42% note due 2029). A controlling shareholder decides capital allocation. Previous estimates were made on a different basis and are not comparable. Margin-of-safety price. We are moderately sure of the near-term level because premium for the next year is already written, but not of the through-cycle level, since the book is young and largely casualty. The worst plausible outcome is a reserve shortfall arriving together with a fund loss and a soft market; the balance sheet would survive it, since there is no debt and little catastrophe exposure (1-in-250 year net loss about $12 million), but per-share value would fall toward the bear case. If we are wrong about the underwriting margin and the affiliate investments, the shares are worth roughly $7. The company pays no dividend, so the return must come from retained earnings and recognition of value over about three years. The margin-of-safety price is $8.00, about 60% of a book that is mostly investment-grade bonds and cash and about eight times 2026 owner earnings; from that price a move to the base case over three years implies about 20% a year, while the bear case implies a modest loss.