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Aspen Insurance Holdings Limited -- Moody's upgrades the holding company debt ratings of Aspen and XL Group following a change in methodology

Moody's Investors Service has today upgraded by one notch the debt and preferred stock ratings of XL Group Ltd (XL Group) subsidiary XLIT Ltd. and Aspen Insurance Holdings Limited (Aspen). A full list of ratings impacted by this rating action is available at the end of this press release.