NEW YORK — Stocks that moved substantially or traded heavily Thursday on the New York Stock Exchange and the Nasdaq Stock Market:

NYSE

General Motors Corp., up 9 cents at $2.88

Shares of U.S. automakers were highly volatile amid wrangling in Washington over whether a bailout deal could be reached for the industry.

Citigroup Inc., down $1.69 at $4.71

The bank's stock remained under pressure despite a pledge by Saudi Prince Alwaleed to increase his stake to 5 percent.

Saks Inc., up 18 cents at $3.30

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Shares rose despite Moody's announcement that it was reviewing the department store's credit for a possible downgrade.

PepsiCo Inc., down $1.81 at $50.29

The soft-drink maker reaffirmed full-year guidance, saying its international and Frito-Lay businesses continue to perform well.

Barnes & Noble Inc., down 85 cents at $12.25

The bookseller reported a larger-than-expected quarterly loss on significant drops in traffic and consumer spending at its stores.

JPMorgan Chase & Co., down $5.09 at $23.38

The bank plans to lay off 10 percent of its investment-banking employees, or about 3,000 people, according to media reports.

GameStop Corp., down $3.06 at $17.50

The video game retailer's fiscal third-quarter earnings fell sharply and it cut its outlook due to weaker consumer spending.

NASDAQ

Eagle Bulk Shipping Inc., down $2.17 at $4.28

A JPMorgan analyst said drybulk shippers might be at risk of breaking debt obligations if ship leasing rates remain low.