Aspen Insurance said on Tuesday it was seeking a valuation of up to $2.85 billion in its New York flotation, as the Bermudian specialty insurer looks to go public again in the United States after more than six years. Stock …

Aspen Insurance said on Tuesday it was seeking a valuation of up to $2.85 billion in its New York flotation, as the Bermudian specialty insurer looks to go public again in the United States after more than six years. Stock …