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

NYSE

PepsiAmericas Inc., down 3 cents at $13.72

The Pepsi bottler announced it plans to sell up to $1 billion of its debt.

Alcoa Inc., down $1.01 at $27.12

Prudential Securities reduced its recommendation on the aluminum producer's shares to ``hold'' from ``buy.''

Caterpillar Inc., down $1.79 at $69.90

Legg Mason downgraded Caterpillar, which makes agricultural and other heavy equipment, to ``hold'' from ``buy.''

NASDAQ

Atlantic Coast Airlines Holdings Inc., down 52 cents at $7.57

Goldman Sachs downgraded the provider of regional air service to ``in-line'' from ``outperform.''

PeopleSoft Inc., up 24 cents at $16.99

Banc of American Securities raised its rating on the software maker to ``buy'' from ``neutral.''

SI International Inc., down 75 cents at $17.66

Legg Mason downgraded SI International, an information technology provider, to ``hold'' from ``buy.''