 Aecom ACM, -0.59 shares fell 3 in premarket trades Monday after it said its second-quarter net income increased by 5.6 to 41.6 million, or 29 cents a share, from 39.36 million, or 26 cents a share, in the year-ago quarter. Adjusted net income for the engineering and infrastructure company fell to 34 cent a share from 59 cents a share. 