Stocks to Watch: BA, STJ, NAV & More

Take a look at some of Tuesday's midday movers:

Boeing led the Dow gainers after Bernstein upgraded the stock to "outperform" with a $92 price target, saying delivery concerns are “overdone."

St Jude Medical slid after a physician reported to U.S. regulators a failure of the company’s Durata brand lead wire connecting an implanted defibrillator to the heart of a single patient. Competitors Medtronic and BostonScientific were both higher.

Navistar fell after a court ruling went against the company. Navistar will not be permitted to pay fines in order to sell heavy duty diesel truck engines that fail to meet pollution standards. The ruling could limit Navistar’s ability to continue shipping trucks until it complies with the EPA’s 2010 standard and could cause it to lose market share.

Facebook rose after consulting company comScore said marketing on the social media website influences consumer behavior. It rebuts a recent research questioning the effectiveness of Facebook messages.

Zynga fell as much as 13 percent, tripping a short-sale circuit breaker. This as the Facebook game craze wanes.

ING Group slipped after CNBC’s Scott Cohn reported the company agreed to pay $619 million to settle probe into Iranian Sanctions.

PNC also fell after the company announced it was increasing its mortgage buyback reserve by $350 million.

SanDisk moved higher on renewed takeover rumors.

A123 Systems soared after the company announced a breakthrough in lithium-ion batteries that could reduce the price of electric cars. A123 was a $28 a share stock in 2009.

Fusion-io jumped as much as 9 percent after it won a contract from Cisco Systems .

Harman International fell after Apple announced plans to team up with automakers to offer real-time traffic updates.

VeriFone moved to the downside after the electronic payments company said that a jury ruled against it in a patent dispute.

7 Days rallied after Morgan Stanley named the stock a “Long Research Tactical Idea.”

Textron also rallied after NetJets agreed to buy 150 jets from its Cessna subsidiary.

Energy stocks, including Exxon-Mobil,Chevron,Valero,Halliburton, and Schlumberger all moved higher as West Texas Brent oil rose.

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