Ratings agency Standard & Poor's has assigned its 'A+' rating to Chubb's planned $525m (£335m) capital raising plans.
Credit analyst Michael Gross said: "The issuance is being drawn from Chubb's previously rated shelf and will be used for general corporate purposes, including capital contributions to operating subsidiaries."
Explaining the decision, Standard & Poor's said the rating depends on net premium growth of 30% in 2002.
In addition, it revealed it expects a combined ratio of less than 100% for 2002, excluding catastrophic events.
Gross added: "Financial leverage is expected to remain satisfactory for the current ratings level."