Midday movers: Chimerix, H&R Block, McDonald's & More

NYSE New York Stock Exchange traders markets
Scott Mlyn | CNBC

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

CareFusion - The medical-technology company soared after Becton Dickinson said it would buy the company for $12 billion, or $58 a share.

Chimerix - Shares gained ground after the FDA approved the company's drug to treat Ebola patients.

Durata Therapeutics - Shares soared after Actavis said it would buy the company for $675 million, or about $23 a share.

GT Advanced Technologies - The maker of sapphire glass fell after it filed for bankruptcy. Last month, Apple said it would not use the sapphire screens in its new iPhones.

H&R Block - The tax-preparation provider fell on word the sale of its banking unit to Bank of Internet (BOFI) would be delayed.

Intuitive Surgical The maker of surgical-robot devices rose after Goldman Sachs upgraded it to buy from neutral.

McDonald's - The fast-food chain moved lower after Morgan Stanley downgraded the stock to equal weight from overweight and lowered its price target to $96 from $102. It was more bullish on Burger King (BKW) instead.

Rio Tinto - The miner spiked on a report that Glencore was laying the groundwork for a possible merger between the two in 2015. Freeport-McMoRan, BHP Billiton and Cliffs Natural Resources all initially rose on the news.

Sunesis Pharmaceuticals - The company plunged after it said its experimental cancer drug did not meet its goals in a late-stage trial.

Tesla Motors - The electric-car maker moved higher on reports it was making its first move toward automated driving.

Walt Disney - the entertainment conglomerate rose as its ESPN sports channel signed a nine-year deal with the NBA, starting with the 2016-17 season.

Wynn Resorts - The casino operator and others including Las Vegas Sands, MGM Resorts and Melco Crown all moved higher after Macau reported a 14 percent year-on-year rise in visitor arrivals during China's National Day Golden Week in the beginning of October.

(See CNBC's Market Insider Blog)

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