Enstar believes that the addition of Atrium's live underwriting platform will boost development of its own business. Atrium will add a proficient underwriting and management team to Enstar. Previously on Sep 9, Enstar Group in partnership with Stone Point Capital LLC's affiliates had completed the acquisition of Arden Reinsurance Company Ltd. from Arden Holdings Ltd for $79.6 million. Northshore Holdings Limited, the purchaser of Arden Reinsurance is indirectly owned 60% by Enstar Group's Subsidiary and 40% by Stone Point's affiliated funds. Enstar Group has been continually undertaking acquisitions to ramp up its inorganic growth profile.