Octave Specialty Group, Inc. is a financial services holding company. The Company operates through two segments, which include Specialty Property & Casualty Insurance and Insurance Distribution. The Company's property and casualty (P&C) and accident and health (A&H) insurance underwriting and distribution business, includes managing general agents and underwriters, collectively managing general agents (MGAs) or managing general underwriter (MGA/Us); an insurance broker; and other distribution, underwriting and related businesses. The Company's distribution platform operates in the following lines of business, which include property, niche specialty risk, accident & health, miscellaneous specialty, reinsurance, surety, marine & energy, specialty auto, excess and surplus (E&S) commercial package, professional lines, and directors & officers (D&O). Its subsidiaries include All Trans Risk Solutions, LLC, Ambac Asset Management, Inc., Capacity Marine Corporation, and others.