Aspen Insurance Holdings CEO Chris O' Kane (pictured) will ring the closing bell at the New York Stock Exchange tomorrow to commemorate the five-year anniversary of the company's founding.

Mr. O' Kane will be joined by executives and guests of Aspen. The company was established in 2002 and listed its shares on the NYSE in 2003.

Aspen reported a 97 percent increase in first-quarter net income to $121.9 million, an annualised return on average equity of 22.9 percent and total assets of $6.9 billion. In 2006 the company reported $1.9 billion of gross written premiums for the whole year with profits of $378.1 million.