Chubb Limited provides insurance and reinsurance products worldwide. The company's North America Commercial P&C Insurance segment offers commercial property, casualty, workers' compensation, package policies, risk management, financial lines, marine, construction, environmental, medical, cyber risk, surety, and excess casualty; and group accident and health insurance to large, middle market, and small commercial businesses.

Cincinnati Financial Corporation, together with its subsidiaries, provides property casualty insurance products in the United States. The company operates through five segments: Commercial Lines Insurance, Personal Lines Insurance, Excess and Surplus Lines Insurance, Life Insurance, and Investments.

W. R. Berkley Corporation, an insurance holding company, operates as a commercial lines writer in the United States and internationally. It operates in two segments, Insurance and Reinsurance & Monoline Excess.

The Allstate Corporation, together with its subsidiaries, provides property and casualty, and other insurance products in the United States and Canada.

RLI Corp., an insurance holding company, underwrites property and casualty insurance in the United States and internationally. Its Casualty segment provides commercial and personal coverage products; and general liability products, such as coverage for third-party liability of commercial insureds, including manufacturers, contractors, apartments, and mercantile.

White Mountains Insurance Group, Ltd., through its subsidiaries, provides insurance and other financial services in the United States. The company operates through five segments: HG Global/BAM, Ark, NSM, Kudu, and Other Operations.

W.R. Berkley Corp. is an insurance holding company, which engages in the property casualty insurance business. It operates through the following segments: Insurance and Reinsurance & Monoline Excess.

Kinsale Capital Group, Inc., a specialty insurance company, provides property and casualty insurance products in the United States. The company's commercial lines offerings include construction, small business, excess and general casualty, commercial property, allied health, life sciences, energy, environmental, health care, inland marine, public entity, and commercial insurance, as well as product, professional, and management liability insurance.