Citigroup, Biogen Idec Among Big Movers in the Stock Market

Stocks that were moving substantially or trading heavily Monday on the New York Stock Exchange and Nasdaq Stock Market:

NYSE

Citigroup Inc., down $1.67 at $46.20.

Third-quarter profits at the biggest U.S. bank fell 57 percent after it took a hit of more than $3 billion in mortgage-backed security losses, leveraged debt write-downs, and fixed-income trading losses.

SLM Corp., down $2.10 at $46.35.

An investor group that seeks to walk way from a $25 billion buyout of the student lender, better known as Sallie Mae, told a Delaware court it should not have to pay the $900 million breakup fee stipulated in the agreement.

Medtronic Inc., down $6.75 at $49.58.

The medical device maker is stopping distribution of wires that connect some of its defibrillators to patients' hearts after learning they may have contributed to five deaths.

NASDAQ

Biogen Idec Inc., up $13.70 at $83.13.

The biotechnology company said it may sell itself and has attracted some interest from potential buyers.

Force Protection Inc., down $1.72 at $22.23.

The armored vehicle maker found material weaknesses in accounting system, according to a filing with the Securities and Exchange Commission.

The Children's Place Retail Stores Inc., up 99 cents at $24.91.

Ezra Dabah, the former chief executive and a current director of the retailer is considering making a bid for the retailer, according to an SEC filing.