Investing.com -- Magnum Ice Cream Nv (NYSE:MICC) shares jumped 10.9% in U.S. premarket trading and 10.5% in European markets on Friday following reports of potential private equity interest. Blackstone and Clayton, Dubilier & Rice are reportedly exploring bids for the owner of the Ben & Jerry's and Cornetto brands. The firms are currently in the early stages of evaluating offers for the recently listed ice cream manufacturer. According to Reuters, citing sources familiar with the matter, both pr