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Directory · Company · Updated 2026-10-18

Arbella Mutual Insurance Company · NAIC 17000

Where Arbella Mutual 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.

Arbella Mutual Insurance Company (NAIC 17000) is a property and casualty insurer domiciled in Massachusetts, part of Arbella Insurance Group. State regulators list it as licensed (admitted) in Massachusetts. Its group ranked #3 in Massachusetts commercial auto in 2025 (9.7% share).

By Sam Alishahi, independent insurance broker · All companies

By state

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 Alaska, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Iowa, Idaho, Illinois, Kentucky, 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, which doesn't by itself mean it isn't licensed there.

StateStatusLines licensedSinceSource
MassachusettsAdmitted (licensed)Personal auto, General liability—Massachusetts, 2026-10-18
Standing

Where it's a top-10 writer

Arbella Insurance Group (NAIC group 00586), the group Arbella Mutual Insurance Company belongs to, ranks in the top 10 for these lines and states. Top 10 insurer groups by direct premium written in 2025, from the NAIC's Market Share Reports for Property/Casualty Groups and Companies by State. A group is the parent and its insurance companies together; share is the group's part of the state total for the line; loss ratio is losses incurred over premium earned.

Line and stateRankPremium writtenShareYear
Commercial auto in Massachusetts
Commercial Auto Liability
#3$107.8M9.71%2025
Commercial auto in Massachusetts
Total Commercial Auto
#3$154.4M10.08%2025
Commercial auto in Massachusetts
Commercial Auto Physical Damage
#3$46.5M11.06%2025
Commercial auto in Rhode Island
Total Commercial Auto
#3$13.7M6.45%2025
Commercial auto in Rhode Island
Commercial Auto Physical Damage
#3$3.6M7.11%2025
Commercial auto in Rhode Island
Commercial Auto Liability
#4$10.1M6.24%2025
Commercial auto in Connecticut
Commercial Auto Physical Damage
#5$8.1M5.06%2025
Homeowners in Massachusetts
Homeowners Multiple Peril
#6$220.6M5.47%2025
Personal auto in Massachusetts
Private Passenger Auto Liability
#6$310.6M7.49%2025
Personal auto in Massachusetts
Total Private Passenger Auto
#6$562.8M7.24%2025
Personal auto in Massachusetts
Private Passenger Auto Physical Damage
#6$252.2M6.96%2025
Commercial package (BOP, CMP) in Massachusetts
Total Commercial Multiple Peril
#7$117.9M5.68%2025
Commercial package (BOP, CMP) in Rhode Island
Total Commercial Multiple Peril
#7$12.8M4.39%2025
Commercial auto in Connecticut
Commercial Auto Liability
#9$19.5M3.13%2025
Commercial auto in Connecticut
Total Commercial Auto
#9$27.6M3.53%2025

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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