Among the stock activity stories for Thursday, Oct. 29, from AP Financial News:

HARTFORD, Conn. (AP) ¿ Shares of Manitowoc Co. jumped Thursday as an analyst upgraded the heavy equipment maker on improved crane orders.

PHILADELPHIA (AP) ¿ Shares of Symantec Corp. soared Thursday after the antivirus software maker reported second-quarter earnings that exceeded investors' expectations amid signs that stabilization in its business has begun to take hold.

NEW YORK (AP) ¿ Shares of IMAX Corp. jumped in Thursday trading after Piper Jaffray put its highest rating on the company, saying more theaters are likely to install its big screens as film distribution costs drop.

NEW YORK (AP) ¿ Shares of Cytokinetics Inc. plunged Thursday after the biotechnology company said development of a potential heart failure drug could take a year longer than previously anticipated.

NEW YORK (AP) ¿ Shares of ambulatory surgery center operator Novamed Inc. fell Thursday after the company reported a slight dip in third-quarter profit and earnings per share missed Wall Street expectations.

Copyright 2009 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

More from Investing

Tyson Foods CEO: We Aren't Done Making Deals

Tyson Foods CEO: We Aren't Done Making Deals

The Single Biggest Reason Trade War Fears Could Finally Topple the Stock Market

The Single Biggest Reason Trade War Fears Could Finally Topple the Stock Market

Stocks Dive Globally as U.S.-China Trade War Intensifies

Stocks Dive Globally as U.S.-China Trade War Intensifies

60 Seconds: What Are the Bank Stress Tests?

60 Seconds: What Are the Bank Stress Tests?

5 Stock Picks Under $10 for Millennials

5 Stock Picks Under $10 for Millennials