Editor's Note: Green and red arrows refer to intraday stock price movement.

NEW YORK ( TheStreet) -- CHANGE IN RATINGS

Corn Products ( CPO upgraded at Deutsche from Hold to Buy. $62 price target. Company should continue to deliver solid growth.

Citrix Systems ( CTXS - Get Report) downgraded at JP Morgan from Neutral to Underweight, JP Morgan said. Valuation call, based on a $65 price target.

Juniper Networks ( JNPR upgraded at Evercore from Equal-weight to Overweight. $37 price target. Company is cutting costs and the stock appears oversold.

Vail Resorts ( MTN - Get Report) rated new Neutral at Rodman. Valuation call, as the company could be hurt by a weaker economy.

Prologis ( PLD - Get Report) upgraded at BofA/Merrill to Buy from Neutral. Confident in execution as merger is on track and possible ahead of schedule, Bank of America/Merrill Lynch said. Price target lifted to $39 from $37.

Stryker ( SYK - Get Report) rated new Neutral at Gleacher. $56 price target. Company has a good strategy, but this is largely priced into the stock.

Triquint Semiconductor ( TQNT rated new Buy at Cantor Fitzgerald. $18 price target. Company can gain market share in a business that's growing at a double-digit pace.

Xilinx ( XLNX - Get Report) upgraded at Goldman from Sell to Neutral. $33 price target. Carrier CapEx spending is improving. Neutral rating.

Zimmer ( ZMH rated new Neutral at Gleacher. $58 price target. Company faces secular growth challenges.

End of report.

This article was written by a staff member of TheStreet.