Computer Sciences +2.5%; activist ups stake to 5.9%

• Barry Rosenstein's Jana Partners has upped its Computer Sciences (CSC) stake to 5.9% (8.37M shares) from a prior 2%. Jana adds it "has had and may continue to have discussions" with CSC's board about "potential strategic alternatives" and capital allocation. (13D filing)
• Shares have risen to $73.55 AH. They rose 7.2% in regular trading after dealReporter stated CSC is in talks to do a 2-part sale.