Pioneer (PXD) (TKLC) (OVTI) (PNG) (PRGS) (QNST) Downgraded

Pioneer Natural Resources (NYSE: PXD), Tekelec (NASDAQ: TKLC), OmniVision Technologies, Inc. (NASDAQ: OVTI), PAA Natural Gas Storage (NYSE: PNG), Progress Software (NASDAQ: PRGS) and Quinstreet Incorporated (NASDAQ: QNST) were downgraded by analysts.

Pioneer Natural Resources (PXD) was downgraded by Susquehanna from a “Positive” rating to a “Neutral” rating.

Tekelec (TKLC) was downgraded by Capstone from a “Hold” rating to a “Sell” rating

OmniVision Technologies, Inc. (OVTI) was downgraded by Oppenheimer from an “Outperform” rating to a “Perform” rating.

PAA Natural Gas Storage (PNG) was downgraded by Barclays Capital from an “Overweight” rating to an “Equal Weight” rating.

Progress Software (PRGS) was downgraded by Longbow Research from a “Buy” rating to a “Neutral” rating.

Quinstreet Incorporated (QNST) was downgraded by Credit Suisse (NYSE:CS) from an “Outperform” rating to a “Neutral” rating. They have a price target of $12.00 on the company.