NEW YORK (AP) - Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq stock market:

NEW YORK (AP) Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and the Nasdaq stock market:

NYSE

Valeant Pharmaceuticals International Inc., down $11.97 to $102.14

The drug developer's CEO, J. Michael Pearson, is taking a medical leave of absence after he was hospitalized with pneumonia.

Freeport-McMoRan Inc., down 72 cents to $6.85

The mining company's executive chairman and co-founder, James R. Moffett, is resigning.

Chesapeake Energy Corp., down 38 cents to $ 4.07

The oil and natural gas company's stock fell along with many of its peers as prices for oil and other commodities fell.

Now Inc., down $1.17 to $15.68

The energy and industrial products distribution company might not meet its financial obligations under its credit agreement.

Nasdaq

Iconix Brand Group Inc., down $1.78 to $5.67

The clothing brand licensing group received a letter of investigation from the SEC two months after saying it would have to resubmit some financial statements.

Gold Fields Inc., down 23 cents to $2.70

The gold mining company's stock fell along with its peers as gold prices continue to slide.

Chimerix Inc., down $28.95 to $6.62

The biotechnology company's oral antiviral drug for infections associated with stem-cell transplants failed in late-stage study.

Viking Therapeutics Inc., up $2.17 to $4.35

The biotechnology company reported positive results from a preclinical study on its lead drug development program for muscle and bone disorders.