Among the stock activity stories for Monday, Sept. 28, from AP Financial News:

NEW YORK (AP) ¿ Shares of Techwell Inc. briefly jumped to a 52-week high after an analyst upgraded the chip designer following the company's improved third-quarter guidance.

NEW YORK (AP) ¿ Shares of FairPoint Communications Inc. plunged after the phone company disclosed it may be forced to file for bankruptcy protection.

NEW YORK (AP) ¿ Shares of SmartHeat Inc., which sells energy savings technology and products, rose after an analyst initiated coverage of the Chinese company with an "Outperform" rating.

NEW YORK (AP) ¿ Shares of Techwell Inc. jumped to a 52-week high after an analyst upgraded the chip designer following the company's improved third-quarter guidance.

WASHINGTON (AP) ¿ Shares of Accenture Ltd. rose after a Wall Street analyst upgraded the consulting and outsourcing company and predicted improvement in its margins.
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