Arch Specialty Insurance Company · NAIC 21199
Where Arch Specialty Insurance Company is admitted, where it's eligible for surplus lines, the lines it's licensed for and how much of each it writes, from state regulators' public lists and market share reports.
Arch Specialty Insurance Company (NAIC 21199) is a property and casualty insurer domiciled in Missouri, part of Arch Insurance Group. State regulators list it as licensed (admitted) in Illinois, Maryland, Missouri, Nebraska, South Carolina and an eligible surplus lines insurer in Alaska, California, Colorado, Connecticut, Florida, Iowa, Idaho, Kentucky, Massachusetts, Minnesota, Mississippi, Montana, North Carolina, New Jersey, New York, Oklahoma, Oregon, Rhode Island, Tennessee, Texas, Utah, Washington, West Virginia. It ranked #10 of 127 in Illinois medical malpractice in 2025 (1.8% share). It ranked #12 of 122 in North Carolina medical malpractice in 2025 (2.0% share). It ranked #23 of 128 in Illinois flood in 2025 (1.2% share).
By Sam Alishahi, independent insurance broker · All companies
Where it's licensed
States whose regulator lists are loaded: Alaska, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Iowa, Idaho, Illinois, Kentucky, Massachusetts, Maryland, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Jersey, Nevada, New York, Ohio, Oklahoma, Oregon, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Washington, Wisconsin, West Virginia, Wyoming. Not on the lists we have for Delaware, Georgia, Hawaii, North Dakota, Nevada, Ohio, South Dakota, Wisconsin, Wyoming, which doesn't by itself mean it isn't licensed there.
| State | Status | Lines licensed | Since | Source |
|---|---|---|---|---|
| Alaska | Surplus lines (eligible) | — | — | Alaska, 2026-10-18 |
| California | Surplus lines (eligible) | — | 09/01/1995 | California Department of Insurance, 2026-10-17 |
| Colorado | Surplus lines (eligible) | — | 2026-07-01 | Colorado, 2026-10-18 |
| Connecticut | Surplus lines (eligible) | — | — | Connecticut, 2026-10-18 |
| Florida | Surplus lines (eligible) | — | — | Florida Office of Insurance Regulation, 2026-10-18 |
| Idaho | Surplus lines (eligible) | — | — | Idaho, 2026-10-18 |
| Illinois | Admitted (licensed) | Personal auto, Equipment breakdown, Commercial auto, Commercial package (BOP, CMP), Credit, Crime (burglary and theft), Earthquake, Fidelity bonds, Flood, Inland marine, General liability, Medical malpractice, Professional liability (E&O), Commercial property (fire and allied lines), Workers' compensation | — | Illinois, 2026-10-18 |
| Iowa | Surplus lines (eligible) | — | — | Iowa, 2026-10-18 |
| Kentucky | Surplus lines (eligible) | — | — | Kentucky Department of Insurance, 2026-10-17 |
| Maryland | Admitted (licensed) | — | — | Maryland Insurance Administration, 2026-10-17 |
| Massachusetts | Surplus lines (eligible) | — | — | Massachusetts, 2026-10-18 |
| Minnesota | Surplus lines (eligible) | — | — | Minnesota, 2026-10-18 |
| Mississippi | Surplus lines (eligible) | — | — | Mississippi Insurance Department, 2026-10-17 |
| Missouri | Admitted (licensed) | — | — | Missouri, 2026-10-18 |
| Montana | Surplus lines (eligible) | — | — | Market share report |
| Nebraska | Admitted (licensed) | — | — | Nebraska, 2026-10-18 |
| New Jersey | Surplus lines (eligible) | — | — | New Jersey, 2026-10-18 |
| New York | Surplus lines (eligible) | — | 07/09/1993 | Excess Line Association of New York (DFS-licensed and eligible excess line insurers), 2026-10-17 |
| North Carolina | Surplus lines (eligible) | Equipment breakdown, Commercial package (BOP, CMP), Credit, Crime (burglary and theft), Earthquake, Fidelity bonds, Flood, Inland marine, General liability, Medical malpractice, Commercial property (fire and allied lines) | — | North Carolina, 2026-10-18 |
| Oklahoma | Surplus lines (eligible) | — | — | Oklahoma, 2026-10-18 |
| Oregon | Surplus lines (eligible) | — | — | Oregon, 2026-10-18 |
| Rhode Island | Surplus lines (eligible) | — | — | Rhode Island, 2026-10-18 |
| South Carolina | Admitted (licensed) | — | — | South Carolina, 2026-10-18 |
| Tennessee | Surplus lines (eligible) | — | — | Tennessee, 2026-10-18 |
| Texas | Surplus lines (eligible) | — | 1995/09/01 | Texas Department of Insurance, 2026-10-17 |
| Utah | Surplus lines (eligible) | — | — | Utah, 2026-10-18 |
| Washington | Surplus lines (eligible) | — | — | Washington Office of the Insurance Commissioner and the Surplus Line Association of Washington, 2026-10-17 |
| West Virginia | Surplus lines (eligible) | — | — | Market share report |
Method and source
Each row comes from the named regulator's public company list on the date shown, joined by NAIC number. "Admitted" means licensed by the state and backed by its guaranty fund; "surplus lines" means eligible to take risks the admitted market declines, without rate or form approval or guaranty fund protection. Premium and rank come from state market share reports that list every company. This is a public-records directory, not a rating or recommendation; for the company's own filings use the NAIC's Consumer Information Source.
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