Tesco (TSCDY) (VLTR) (YZC) (ACOM) (ADS) (ADTN) Downgraded

Tesco PLC (NASDAQ: TSCDY), Volterra Semi (NASDAQ: VLTR), Yanzhou Coal Mining (NYSE: YZC), Ancestry.com Inc. (NASDAQ: ACOM), Alliance Data Systems Co. (NYSE: ADS) and ADTRAN, Inc. (NASDAQ: ADTN) were downgraded by analysts.

Tesco PLC (TSCDY) was downgraded by ING Group from a “Buy” rating to a “Sell” rating.

Volterra Semi (VLTR) was downgraded by Needham & Company from a “Strong Buy” rating to a “Buy” rating. They have a price target of $28.00 on the company, down from $29.00.

Yanzhou Coal Mining (YZC) was downgraded by Sanford C. Bernstein from a “Market Perform” rating to an “Underperform” rating.

Ancestry.com Inc. (ACOM) was downgraded by Morgan Stanley (NYSE:MS) from an “Overweight” rating to an “Equal Weight” rating.

Alliance Data Systems Co. (ADS) was downgraded by Zacks Investment Research from an “Outperform” rating to a “Neutral” rating.

ADTRAN, Inc. (ADTN) was downgraded by Jefferies (NYSE:JEF) from a “Buy” rating to a “Hold” rating. They have a price target of $29.75 on the company.