Aspen Re, the reinsurance group set up last year by Wellington Underwriting, plans to float on the New York Stock Exchange for $1.3bn (£793m), according to reports.
The Sunday Telegraph claimed Aspen had appointed Credit Suisse First Boston and Goldman Sachs to examine a flotation, and bankers said Aspen could be worth between 1.3 and 1.5 times its book value of £600m.
Aspen Re may want to take advantage of a strong reinsurance market by selling shares just a year after its birth.
Shares in London-based Wellington, which holds 20% of Aspen, have more than doubled in value in just over a year.
