Stocks that are moving substantially or trading heavily Thursday on the New York Stock Exchange and the Nasdaq Stock Market:

NYSE

Media General Inc., up $1.59 at $16.40

To reduce operating costs, the newspaper publisher and television station operator will cut nearly 11 percent of its work force by October.

Barnes & Noble Inc., down 8 cents at $29.87

The bookseller put together a management team to study the feasibility of a combination with rival Borders Group Inc.

Ford Motor Co., down 64 cents at $7.16

The auto maker is cutting North American production of pickups and SUVs as more consumers are choosing fuel-efficient models.

Calpine Corp., up $1.72 at $23

NRG Energy Inc. offered to buy the power company for $11.3 billion in stock to help it weather volatility of electricity prices.

Zale Corp., up $2.53 at $21.17

The specialty jeweler posted a bigger fiscal third-quarter loss, but sales rose 6 percent and topped expectations.

Moody's Corp., down $2.40 at $34.51

The credit ratings agency is looking to see if computer errors mistakenly assigned top-quality ratings to debt in Europe that didn't deserve high marks.

Dick's Sporting Goods Inc., down $4.29 at $22.25

Poor sales at established stores and a soft U.S. economy caused the sporting goods retailer to cut its 2008 profit forecast.

NASDAQ

Apple Inc., down $1.14 at $177.05

Shares dropped, even as an Oppenheimer analyst started coverage of the iPod maker at "Outperform" with a $235 price target, predicting strong demand for the next-generation iPhone.