Sallie Mae among big stock market movers

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

NYSE

SLM Corp., up $4.11 at $49.12.

A group of investors that had planned to acquire the nation's largest student lender, better known as Sallie Mae, said it wants out of the deal, leading to speculation that the lender might be able to fetch new terms for a buyout.

KB Home, up 62 cents at $24.71.

The home builder posted a narrower-than-expected loss for its fiscal third quarter.

Kindred Healthcare Inc., up 59 cents at $18.46.

A Wachovia analyst upgraded the hospital and nursing home operator, saying Kindred's business should stabilize as the company adjusts to changes in Medicare policies.

NASDAQ

Chattem Inc., up $3.98 at $71.45.

The maker of over-the-counter drugs said third-quarter earnings rose 7 percent and raised its 2007 forecast above analysts' expectations.

Westell Technologies Inc., up 15 cents at $2.33.

A Robert W. Baird analyst upgraded the telecommunications equipment company, praising its moves to improve its market position as well as its financial performance.

Parexel International Corp., up $1.42 at $41.84.

The biopharmaceutical services company raised the low end of its earnings forecast, citing its buyout of Apex International Clinical Research Co.