Stocks edge up, Symantec dives 33% and oil slips

KEEPING SCORE: The Standard & Poor’s 500 index rose 5 points, or 0.2%, to 2,728 as of 10:09 a.m. Eastern time. The Dow Jones industrial average climbed 101 points, or 0.4%, to 24,838. The Nasdaq edged up 3 points, or 0.1%, to 7,408. The Russell 2000 index of smaller-company stocks rose 2 points, or 0.2%, to 1,606.