Argo Group US Inc. (AGUS) has improved its operating performance over the past 18 months. As a result, we are revising our outlook on AGUS and its operating companies to stable from negative. At the same time, we are affirming our 'BBB-' issuer credit rating on AGUS and our 'A-' issuer credit and financial strength ratings on its operating companies. The stable outlook reflects our expectation that the group will meet its enhanced efficiency and profitability goals and will continue improving its risk management capabilities. NEW YORK (Standard&Poor's) July 15, 2014--Standard&Poor's Ratings Services said today that it has revised its outlook on U.S.-based intermediary holding company Argo Group US Inc. (AGUS) and its U.S. operating subsidiaries