 Campbell Soup Co. CPB, -0.61 shares fell 2.4 in premarket trades Thursday after the company said its fourth-quarter profit dropped 59 to 170 million, or 32 cents a share, from 411 million, or 95 cents a share, in the year-ago period. Fourth-quarter adjusted earnings rose to 56 cents a share from 52 cents a share in the year-ago quarter. 