Medtronic, Barnes & Noble, Massey Energy, Dell among companies making big market moves

Medtronic, Barnes & Noble, Massey big movers

NEW YORK — Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and Nasdaq Stock Market:

NYSE

Medtronic Inc., down $3.78 at $31.21 A decline in quarterly revenue drove the medical implants company to cut earnings expectations for the year.

Massey Energy Co., down $1.40 at $30.16

The mining company said it received a citation for improperly stored explosives in the mine where 29 men were killed in an April explosion.

Barnes & Noble Inc., down 34 cents at $14.66

The bookseller posted a quarterly loss because of the costs of its proxy fight with a major investors, and cut its profit outlook.

Trina Solar Ltd., up $1.29 at $23.70

The Chinese solar company’s quarterly profit doubled as revenue jumped, and it raised its shipment forecast for the year.

Boston Scientific Corp., down 14 cents at $5.49

Signs of weak demand at rival medical device maker Medtronic Inc. drove shares of Boston Scientific to a 52-week low.

NASDAQ

Diamond Management & Technology Consultants Inc., up $3 at $12.54

PricewaterhouseCoopers LLP will buy the management consulting firm for $378 million, or a 31 percent premium to Monday’s stock price.

StemCells Inc., down 5 cents at 80 cents

A district court judge’s ruling temporarily blocked the Obama administration’s move to expand stem cell research.

Dell Corp., down 35 cents at $11.59

Investors waited for the computer maker’s next move in a bidding war with rival Hewlett-Packard Co. over data storage company 3Par Inc.