Specialty insurance marketplace Accelerant began trading on the New York Stock Exchange on Thursday under the symbol ARX. The shares opened at $28.50, roughly 36% above the $21 offer price, giving the company an initial market capitalisation of about $6.4 billion. Accelerant and certain shareholders sold roughly 34.5 million shares in an upsized initial public offering that raised $724 million, making it one of the largest U.S. insurance listings this year. The strong debut extends a run of well-received insurance flotations since May, as investors shift toward businesses viewed as able to deliver dependable cash flows amid market volatility. Recent entrants include Aspen Insurance, American Integrity Insurance, Ategrity Specialty Insurance and Slide Insurance, all of which are trading above their IPO prices. Accelerant, valued at $2.4 billion in 2023, is backed by billionaire sports financier Todd Boehly’s Eldridge alongside Altamont Capital Partners and Barings. The Atlanta-based company says it applies advanced data analytics and artificial intelligence to improve underwriting and risk management for specialty insurers.