Acxiom Corp. (Nasdaq: ACXM) shares rose 6.8% to $14.42. Volume was 3.5 million shares, or six times its daily average, after BMO Capital Markets Ltd. upgraded the computer-services company from market perform to outperform.

Oracle Corporation (Nasdaq: ORCL) did 28.2 million shares worth of business Thursday, just besting its daily share average of just below 26 million. ORCL prices moved up 1.4% to $33.52.

Meritor Inc. (NYSE: MTOR) shares fell 15.1% to $17.00, on volume of 11.3 million shares, compared to a daily average of 2.3 million, after the auto-parts supplier lowered its second-quarter earnings forecast. The former ArvinMeritor also said it would close its European trailer axle business.