Stocks surge in early trading; Dow jumps 300 points

KEEPING SCORE: The Standard & Poor’s 500 index was up 27 points, or 1%, at 2,646 as of 9:50 a.m. Eastern time. The Dow Jones industrial average rose 278 points, or 1.2%, to 24,468. The Nasdaq composite climbed 75 points, or 1.1%, to 6,950. The Russell 2000 index of smaller-company stocks edged up 2 points, or 0.2%, to 1,480.