UPDATE 1-NORDIC STOCKS - Factors to watch on May 11

Factors to watch on May 11 (Adds Dnb NOR, Carlsberg, A.P. Moller-Maersk, Opera, updates Marine Harvest, Storebrand, DNO) DNB NOR (DNBNOR.OL The Norwegian bank's chief executive told business daily Dagens Industri it was aiming for return on equity of at...