Direct Answer
SEC EDGAR classifies Arch Capital Group under SIC code 6331 (Fire, Marine & Casualty Insurance). Among Swoopr's S&P 500 Equal Weight companies, 32 others share that classification; by latest reported revenue, Arch Capital Group ranks 6 of 33. A filing classification is a starting point: a company's real competitors depend on its segments, which its 10-K describes.
How Does Arch Capital Group Compare With Its Peers?
| Company | Revenue (latest FY) | Revenue growth | Operating margin | Net margin |
|---|---|---|---|---|
| Berkshire Hathaway (BRK.B) | $371 billion FY2025 | 0.0% | n/a | 18.0% |
| Allstate (ALL) | $67.7 billion FY2025 | 5.6% | n/a | 15.0% |
| Travelers Companies (TRV) | $48.8 billion FY2025 | 5.2% | n/a | 12.9% |
| Hartford (HIG) | $28.4 billion FY2025 | 6.9% | n/a | 13.5% |
| American International Group (AIG) | $26.8 billion FY2025 | -1.7% | n/a | 11.6% |
| Arch Capital Group (ACGL) | $19.9 billion FY2025 | 14.3% | n/a | 22.1% |
| Loews Corporation (L) | $18.5 billion FY2025 | 5.4% | n/a | 9.0% |
| Everest Group (EG) | $17.5 billion FY2025 | 1.2% | n/a | 9.1% |
| Markel Group Inc. (MKL) | $15.5 billion FY2025 | 4.7% | 20.6% | 13.6% |
| CNA Financial Corporation (CNA) | $15.0 billion FY2025 | 5.0% | n/a | 8.5% |
| W. R. Berkley Corporation (WRB) | $14.7 billion FY2025 | 7.8% | n/a | 12.1% |
| Cincinnati Financial (CINF) | $12.6 billion FY2025 | 11.4% | n/a | 18.9% |
| American Financial Group Inc. (AFG) | $8.2 billion FY2025 | -1.8% | 13.1% | 10.3% |
| Hanover Insurance Group Inc (THG) | $6.6 billion FY2025 | 5.7% | 14.1% | 10.0% |
| Selective Insurance Group Inc. (SIGI) | $5.3 billion FY2025 | 9.8% | n/a | 8.7% |
| White Mountains Insurance Group Ltd. (WTM) | $3.7 billion FY2025 | 66.8% | n/a | 29.6% |
| RLI Corp. (RLI) | $1.9 billion FY2025 | 6.3% | n/a | 21.4% |
| Kinsale Capital Group Inc. (KNSL) | $1.9 billion FY2025 | 18.0% | n/a | 26.9% |
| UNIVERSAL INSURANCE HOLDINGS INC (UVE) | $1.6 billion FY2025 | 5.5% | n/a | 11.4% |
| Root Inc. (ROOT) | $1.5 billion FY2025 | 29.0% | 4.1% | 2.6% |
| Skyward Specialty Insurance Group Inc. (SKWD) | $1.4 billion FY2025 | 23.2% | n/a | 12.0% |
| Slide Insurance Holdings Inc. (SLDE) | $1.2 billion FY2025 | 36.5% | n/a | 38.4% |
| Donegal Group Inc. (DGICB) | $978 million FY2025 | -1.2% | n/a | 8.1% |
| Heritage Insurance Holdings Inc. (HRTG) | $847 million FY2025 | 3.7% | 31.5% | 23.1% |
| Lemonade Inc. (LMND) | $738 million FY2025 | 40.2% | n/a | -22.5% |
| Bowhead Specialty Holdings Inc. (BOW) | $552 million FY2025 | 29.6% | n/a | 9.8% |
| Hippo Holdings Inc. (HIPO) | $469 million FY2025 | 25.9% | n/a | 13.4% |
| American Coastal Insurance Corporation (ACIC) | $335 million FY2025 | 13.1% | 41.8% | 31.8% |
| NI Holdings Inc. (NODK) | $285 million FY2025 | -12.3% | n/a | -3.7% |
| American Integrity Insurance Group Inc. (AII) | $276 million FY2025 | 35.3% | n/a | 36.0% |
| Kingstone Companies Inc. (KINS) | $215 million FY2025 | 38.5% | n/a | 19.0% |
| Presurance Holdings Inc. (PRHI) | $43 million FY2025 | -35.6% | -59.8% | -42.6% |
| Tiptree Inc. (TIPT) | $488,000 FY2025 | -67.9% | -9574.6% | 7157.2% |
Revenue growth compares each company's latest fiscal year with the one before. Fiscal years do not always end on the same date, so treat close comparisons with care.
How Does Arch Capital Group Rank Among All SEC Filers in Its Industry Code?
33 companies with annual reports in Swoopr's SEC dataset share SIC code 6331 (Fire, Marine & Casualty Insurance), a wider group than the S&P 500 Equal Weight companies above. Ranks run from 1 (highest) and use each company's latest fiscal year, in U.S. dollars.
| Measure | Arch Capital Group | Median of filers | Rank |
|---|---|---|---|
| Revenue | $19.9 billion | $1.9 billion | 6 of 33 |
| Revenue growth | 14.3% | 6.3% | 11 of 33 |
| Net margin | 22.1% | 12.9% | 8 of 33 |
A SIC code reflects the filer's main business as the SEC records it, so the group mixes companies of very different size; the median is a better guide than the average, and a rank near the top by revenue says nothing about quality.
Where These Numbers Come From
Every figure on this page is a value Arch Capital Group reported in its own SEC filings, read from the SEC's XBRL data (accession 0000947484-26-000017 for fiscal year 2025). Ratios are computed from those reported values. Figures were retrieved on October 12, 2026; a later amendment or a new annual report can change them, and the filing itself always takes precedence over this summary.
Each fiscal year is labeled by the calendar year in which it ended, so a company that names the same period differently in its own filings (many retailers whose year ends in January) may use another label. A year is left out of the table when the SEC data set holds no value for it. A figure shown as "Not reported" means the company did not file a value under the standard tag Swoopr reads, not that the amount was zero. This page is educational and describes reported history only; it is not a forecast or a recommendation.
Frequently Asked Questions
Who are Arch Capital Group's competitors?
Companies sharing Arch Capital Group's SEC classification (SIC code 6331 (Fire, Marine & Casualty Insurance)) include Berkshire Hathaway (BRK.B), Allstate (ALL), Travelers Companies (TRV), Hartford (HIG), American International Group (AIG). Its 10-K names the competitors it considers most relevant.
How does Arch Capital Group compare with its peers on margins?
A margin comparison needs reported operating income for Arch Capital Group and its peers; where either is missing, Swoopr leaves the comparison out.
How are these peers chosen?
By the SEC Standard Industrial Classification code each company files under, within Swoopr's S&P 500 Equal Weight company set, falling back to the two-digit major group when fewer than two companies share the exact code. Classification codes are broad, so read the peer list as a screen, not a verdict.
How does Arch Capital Group rank among all companies in its SEC industry?
Among 33 SEC filers under SIC code 6331, Arch Capital Group ranks 6 by latest revenue.