Among the companies with shares expected to actively trade in Monday's session are Biofuel Energy Corp. (BIOF), General Motors Co. (GM) and Prana Biotechnology Ltd. (PRAN).

David Einhorn's Greenlight Capital increased its stake in ethanol producer Biofuel Energy and proposed that the company acquire a real-estate developer for $275 million. Shares surged 35% to $4.25 premarket.

The U.S. Food and Drug Administration has approved Biogen Idec Inc.'s (BIIB) treatment for hemophilia B, a largely inherited disorder that is the second-most common type of hemophilia. Shares edged up 1.9% to $299.56 premarket.

General Motors said it is recalling 824,000 more vehicles in the U.S., the latest in a string of recalls for the auto maker in recent days. Shares slid 0.8% to $34.45 premarket.

Prana Biotechnology said its PBT2 treatment didn't meet its primary goals as a treatment for Alzheimer's disease patients in a Phase 2 study. Shares slumped 66% to $3.35 in recent premarket trading.

 
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Home-health provider Amedisys Inc. (AMED) disclosed a plan to close about 29 care centers and consolidate an additional 25, actions that are expected to result in non-recurring charges of between $7 million to $9 million.

B/E Aerospace Inc. (BEAV) on Monday raised its yearly earnings guidance as it is on pace to post record quarterly bookings and said it had reached a $145 million deal to buy an oilfield services company.

Cal-Maine Foods Inc. (CALM) said its fiscal third-quarter sales and profit grew in large part because of higher prices and continued growth in its specialty-egg business.

Forest Laboratories Inc. (FRX) and Hungary's Richter Gedeon PLC reported positive top-line results from a Phase IIb study of an experimental antipsychotic drug for the treatment of bipolar depression. The results from the study come after the companies completed Phase III studies for cariprazine for the treatment of bipolar mania and schizophrenia.

Helen of Troy Ltd.'s (HELE) new chief executive, Julien R. Mininberg, will join the board and is expected to be nominated to be elected to the panel at the company's next annual shareholder meeting. Mr. Mininberg took over as CEO at the beginning of March. He was appointed in January to succeed Gerald J. Rubin, who left to become the chief of a real-estate firm in El Paso, Texas.

Johnson & Johnson (JNJ) said it has accepted Carlyle Group LP's (CG) offer to acquire its ortho-clinical diagnostics business for about $4 billion. New Brunswick, N.J.-based J&J, which makes everything from prescription drugs and medical devices to Band Aids and Listerine mouth wash, has been shedding slow-growing products and businesses.

MagnaChip Semiconductor Corp. (MX) said Chief Financial Officer Margaret Sakai has resigned, just over two weeks after being removed as the company's chief accounting officer, as the South Korean chip maker continues its review of accounting practices and procedures.

Sally Beauty Holdings Inc. (SBH) said a continuing data breach investigation showed more credit-card records may have been stolen than the beauty-supplies company previously estimated.

Standard & Poor's Ratings Services lowered its rating on Target Corp. (TGT), citing a weaker-than-expected fourth quarter due to the retailer's massive data breach and mounting losses from its push into Canada.

UTi Worldwide Inc. (UTIW) said its loss narrowed in the fiscal fourth-quarter, but the logistics and supply-chain management company reported a decline in revenue in its freight-forwarding segments. UTi has taken steps to reduce costs and has been deploying a new freight-forwarding operating systems.

Write to John Kell at john.kell@wsj.com and Lauren Pollock at lauren.pollock@wsj.com

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