Delta Air Lines Inc. (NYSE: DAL) shares rose 4% to $36.34. The company said Wednesday its first-quarter adjusted profit rose in $281 million, or 33 cents a share, beating expectations of 29 cents. Passenger revenue increased 5% in the first quarter and the airline company said it expects second-quarter operating margins of 14% to 16%. Share volume was 1.2 million, compared to an all-day average of 2.3 million
