Just when CRM seemd ripe for a good PB. More up up: Tupperware shares should be bought on any weakness, says RBC Capital After meeting with Tupperware Brands' management, RBC Capital remains positive on the company's long-term outlook but believes the shares may drop on in-line results. The firm recommends buying the stock on any weakness following results as it still believes that the company can generate double digit EPS growth. It maintains an Outperform rating.