Accelerant Holdings has filed for an initial public offering that could raise up to $355.1 million, according to a report from Best Wire, citing a regulatory filing with the US Securities and Exchange Commission.
The specialty insurance platform plans to list its shares on the New York Stock Exchange under the ticker symbol, “ARX.” The offering price is expected to fall between $18 and $20 per share, with the midpoint of $19 used to estimate potential proceeds.
Accelerant is offering about 20.3 million common shares in the IPO. Around an additional 8.7 million shares will be sold by existing shareholders. Underwriters have been granted a 30-day option to purchase up to about 4.3 million additional shares from selling shareholders.
According to the filing, the company plans to use $175.3 million of the IPO proceeds to redeem class C convertible preference shares, unless those shareholders choose to convert their holdings into common shares during the offering. A further $25 million has been allocated to pay a one-time termination fee to an affiliate of Altamont Capital Partners, a private equity firm backing the business. The remainder will go toward general corporate purposes.
Founded in 2018, Accelerant operates as an underwriting and insurance services provider with a focus on the specialty market. It connects managing general agents and other specialty underwriters with risk capital providers, including insurers, reinsurers, and institutional investors. The company also writes business directly through its underwriting segment and has historically reinsured 90% of premiums written. It said it intends to increase that percentage over time.
As of the end of the first quarter of 2025, Accelerant operated in 22 countries and reported $3.5 billion in exchange-written premium over the previous 12 months.
AM Best has assessed the company’s balance sheet strength as supported by what it considers the strongest level of consolidated risk-adjusted capitalization. It also cited financial flexibility, underwriting leverage, and a conservative investment profile. The group’s operating entities currently carry a Financial Strength Rating of A-.
Accelerant’s planned IPO adds to a growing list of insurance-related listings as investor interest in program-focused and tech-enabled insurance models continues to develop.
