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Stocks to Watch: Dell, Chipotle, Six Flags and More...

Stocks struggled for direction Friday as the Nasdaq turned positive within a few minutes of trading, but worries the U.S. economy may slip into recession again and jitters over the ongoing European debt crisis kept the market under pressure.

The Dow Jones Industrial Average opened lower after plunging 419 points in the previous session.

Here are six stocks that are on the move:

Divergent takes on the computer manufacturer. Ticonderoga initiated its coverage of the stock at sell, while Needham upgraded it to buy from hold.


Chipotle Mexican Grill
The restaurant chain was upgraded to outperform at Morgan Keegan based on valuation.


Research In Motion
The mobile telecom company was upgraded to hold from underperform at Jefferies.


Lululemon Athletica
The retailer was upgraded to equal-weight from underweight by Barclays, while Keybanc made the opposite move and downgraded the stock to underweight from hold.


Six Flags
The theme park operator was upgraded to buy from hold at Niller Tabak. The analyst cited valuation and the potential for the company to return cash to shareholders.


The apparel retailer was upgraded to buy from neutral at Sterne Agee.


Get the latest stock picks on the CNBC Stock Blog.