NEW YORK (AP) _ Stocks that were moving substantially or trading heavily Thursday on the New York Stock Exchange and Nasdaq Stock Market.

NYSE

Caterpillar Inc., down $2.91 at $41.75

The machinery company reported fourth-quarter earnings that beat analysts' estimates, but it also issued bearish outlook for future quarters.

Unisys Corp., down $1.44 at $15.25

Unisys' earnings fell 11 percent, but the information services and technology company still met Wall Street's expectations for the fourth quarter.

Advanced Micro Devices, up $4.19 at $22.69

The chip maker's fourth-quarter results missed forecasts, but analysts said the stock still is a good value. Robertson Stephens upped its rating on AMD's stock to ``buy'' from ``long-term attractive.''

NASDAQ

Citrix Systems Inc., up $2.81 at $32.63

Citrix, which supplies server products, reported fourth-quarter earnings that were a penny ahead of estimates.

BroadVision Inc., down $2.06 at $15.19

Deutsche Banc cut its rating on BroadVision, which markets Internet software, to ``market perform'' from ``buy.''

Travelocity.com Inc., up $4.56 at $19.50

The Web-based travel agent posted better-than-expected results for the fourth quarter.