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Midday movers: CompuWare, Halliburton, Nike & more

Wall Street New York Stock Exchange NYSE
Scott Mlyn | CNBC

Take a look at some of Tuesday's midday movers:

1-800-Flowers.com - The gift retailer advanced after saying it would purchase Harry & David Holdings for $142.5 million in cash.

Archer Daniels Midland - The producer of agricultural commodities and products rose after Cargill said it would buy its global chocolate business for $440 million.

AstraZeneca - Shares of the British drug manufacturer slipped after its CEO downplayed talk of a new bid from Pfizer in an interview with Reuters.

Compuware - The software company climbed after it and Thoma Bravo said the private-equity firm would buy Compuware for about $2.5 billion, or $10.92 a share.

Conn's - The furniture and home-appliance retailer slid after reporting lower-than-expected second-quarter earnings and cutting its full-year earnings outlook.

Darden Restaurants - The owner of LongHorn Steakhouse and Olive Garden edged higher after nominating eight new directors to its board in a bid to avert a proxy battle.

Exelixis - The drug developer lost more than half its value after saying its potential treatment for an advanced form of prostate cancer did not meet a main goal.

Halliburton - The provider of oilfield services declined after saying it reached a $1.1 billion settlement for a majority of claims stemming from its role in the BP spill in the Gulf of Mexico in 2010.

Nike - The seller of athletic apparel rose after professional basketball player Kevin Durant said he would re-signed as a Nike endorser after rejecting an offer from Under Armour.

Norwegian Cruise Line Holdings - The cruise line climbed after saying it would buy Prestige Cruises for about $3 billion in cash and stock.

Select Income REIT Common Share - The real estate investment trust fell after saying it would spend about $3 billion in cash and stock to buy REIT Cole Corporate Income Trust.

Synaptics - The maker of touchscreens climbed after Barron's said fingerprint identification technology used in smartphones could increase the value of its shares.

Teva Pharmaceutical Industries - The drug maker fell a fraction after it reported results from studies of its asthma drug.

United Continental Holdings - The carrier and rivals including Delta Air Lines, American Airlines Group and Southwest Airlines advanced as oil prices declines.

Wynn Resorts - The casino operator and competitors including Las Vegas Sands, MGM Resorts International and Melco Crown Entertainment fell after weaker-than-expected Macau gaming revenue in August.

(See CNBC's Market Insider Blog)

—By CNBC's Rich Fisherman.

Questions? Comments? Email us at marketinsider@cnbc.com