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OCTAVE SPECIALTY GROUP INC (OSG)
NYSE · Finance, Insurance & Real Estate · Surety Insurance
Core research established · 4/4 core data layers currently established
What OCTAVE SPECIALTY GROUP INC does
INTRODUCTION Octave Specialty Group, Inc. ("OSG"), headquartered in New York City, is a financial services holding company incorporated in the State of Delaware on April 29, 1991 and was formerly known as Ambac Financial Group, Inc. ("AFG"). In the fourth quarter of 2025, AFG changed its name and rebranded as OSG in connection with the sale of its Legacy Financial Guarantee business. References to "Octave," "OSG," the “Company,” “we,” “our,” and “us” are to OSG and its subsidiaries, as the context requires. Octave operates two principal businesses: •Insurance Distribution — Octave's specialty property and casualty ("P&C") insurance underwriting and distribution business, includes Managing General Agents and Underwriters (collectively "MGAs" or "MGA/Us"); an insurance broker; and other distribution, underwriting and related businesses.
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