Movers roundup: Berry Petroleum, AT&T

Among the stock activity stories for Friday, Dec. 5, from AP Financial News:

NEW YORK (AP) — Berry Petroleum Co. shares sank to a seven-year low Friday as crude oil prices plunged and a Morgan Keegan analyst removed his "Buy" rating on the oil and gas producer.

SEATTLE (AP) — Shares of AT&T Inc. sank as low as $26.97 Friday, but finished nearly flat, a day after the telecommunications company announced plans to cut 12,000 jobs, about 4 percent of its work force, by the end of next year.

NEW YORK (AP) — A shareholder of DineEquity Inc., which operates the IHOP and Applebee's restaurant chains, filed a Securities and Exchange Commission form on Friday to take a more active role in the company, leading to a big boost in the share price.

NEW YORK (AP) — Shares of Apache Corp. slipped on Friday after analysts downgraded the oil and gas producer and crude oil prices tumbled to new lows.

NEW YORK (AP) — Shares of Guess Inc. rose on Friday after the apparel retailer reported third-quarter results that beat analyst expectations but lowered its guidance due to the weak retail environment.

NEW YORK (AP) — Already battered shares of RF Micro Devices Inc. tumbled further Friday after the chip maker lowered its fiscal third-quarter revenue outlook because of weak demand.

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