NEW YORK (AP) -- The following stocks were among those that moved substantially or traded heavily Tuesday on the New York Stock Exchange:

NYSE:

Warner Music Group Corp., down 86 cents at $6.20

The recording company posted an unexpected loss in the fourth quarter on severance costs despite a strong slate of music releases.

Barnes & Noble Inc., down $1.27 at $22.25

The bookseller posted a larger loss than last year and lowered its profit forecast on high costs to launch its electronic book reader.

Windstream Corp., down 5 cents at $10.08

The phone company bought carrier Iowa Telecommunications Services Inc. for $1.1 billion in cash, stock and repayment of debt.

Medtronic Inc., up $2.94 at $43.25

The company reported a surprising boost in profit, as increased sales of implantable heart devices defied reports of weakening demand.

Hewlett-Packard Co., down 83 cents at $50.19

The company's cost-cutting and push into new markets is helping soften the blow from weakness in the company's mainstay businesses.

American Eagle Outfitters Inc., up 47 cents at $15.01

The apparel retailers profit climbed in the third quarter as the prior-year period was weighed down by an impairment charge.

NASDAQ:

Brocade Communications Systems Inc., down 70 cents at $7.10

The company said revenue will be weaker in the first quarter, while an overall rebound isn't expected until the end of the fiscal year.

Peet's Coffee & Tea Inc., down 20 cents at $32.86

Green Mountain Coffee Roasters sweetened its offer for Diedrich Coffee by $2 per share, matching a rival bid from Peet's.