Merrill Lynch issued a positive economic outlook for 2014 to lift the markets to a higher open with the Dow rising 25 points to 16,090. Nasdaq eased a point to 3990.

On the upside 

A Seeking Alpha contributor expects a surge in Camtek’s (Nasdaq: CAMT) share price to fall within P/E ratio of other 3D printer stocks.

Shares of Ariad Pharmaceuticals (Nasdaq: ARIA) continued rising.

Giant Interactive (NYSE: GA) received a buyout bid of a premium of approximately $2.8 billion.

On the downside

ADT (NYSE: ADT) will repurchase 10.24 million common shares that are owned by Corvex Management for $44.01 per share. 

Celldex Therapeutics (Nasdaq: CLDX) reported upbeat interim data from a Phase 2 ReACT study of rindopepimut in recurrent glioblastoma but the stock price dropped.

Investors locked in profits on Galena Biohpharma (Nasdaq: GALE).

In the broad market, declining issues barely edged out advancers by a slim margin of nearly 10 to 9 on the NYSE while advancers edged out decliners by nearly 10 to 9 on Nasdaq. The broader S&P 500 held steady at 1804.