Stocks were looking refreshed after the long weekend at the opening bell Tuesday. Major U.S. markets were slightly higher straight out of the gate. Tesla Motors (TSLA) is advanced after closing at an all-time high Friday. Dollar General (DG) is raising its all-cash bid for Family Dollar (FDO) to $80 a share. Dollar General is also saying it will now divest itself of 1500 stores to avoid regulatory issues. Family Dollar rejected an earlier bid from the company, agreeing to be acquired by another rival, Dollar Tree (DLTR). Norwegian Cruise Lines (NCLH) is buying Prestige Cruises International in a $3 billion deal. Shares of Apple traded higher despite its iCloud being under fire this weekend. Apple (AAPL) says it has fixed the security flaw that could have lead hackers to gain to access and leak nude photos of celebrities including Jennifer Lawrence and Kate Upton.