The following stocks were among those that moved substantially or traded heavily Monday on the New York Stock Exchange:
Beazer Homes USA Inc., down 35 cents at $5.14
Federal regulators have notified the homebuilder that its top executive could face civil charges over incentive compensation.
Merck & Co., up 71 cents at $33.81
Investors brushed off a rival company's study that showed its cholesterol drug is potentially more effective than Merck's Zetia.
Citigroup Inc., up 13 cents at $4.18
The company said it would sell a majority stake in a Japanese unit for $1 billion in cash in a step to shed noncore assets.
Lowe's Cos., down 11 cents at $21.74
The home-improvement retailer's profit fell 30 percent as customers continued to delay large purchases amid a weak economy.
Illinois Tool Works Inc., up $2.04 at $51.02
The industrial products maker maintained its guidance for fourth-quarter earnings from continuing operations.
Landry's Restaurants Inc., up $2.92 at $19.10
A shareholder announced plans to oppose the $1.2 billion private takeover of the restaurant chain by its CEO.
Westport Innovations Inc., up $1.12 at $12.23
The company, whose equipment enables cars to run on natural gas, announced a long-term contract with Swedish car and truck maker Volvo.
Apollo Group Inc., up $3.14 at $57
The for-profit education company said the Department of Education granted it continued access to federal student loan programs.