Among the companies with shares expected to actively trade in Wednesday's session are Realogy Holdings Corp. (RLGY), Health Management Associates Inc. (HMA) and Actions Semiconductor Co. (ACTS).

Realogy Holdings Corp. projected first-quarter results below analysts' expectations, although an improvement in sales helped results top year-earlier comparisons. The real estate broker's shares slid 7.3% to $41.55 after hours Tuesday.

Health Management Associates Inc. cut its full-year revenue outlook and said it expects first-quarter earnings and revenue to fall short of analysts' expectations as the hospital operator said inpatient admissions sank. Shares fell 10% to $11.27 after hours.

Actions Semiconductor raised its first-quarter revenue outlook as the company said it has seen stronger-than-expected sales of its newest chipset for tablets. Shares were up 8% to $2.85 after hours.

Durata Therapeutics Inc. (DRTX) will offer about $50 million of its shares, with plans to use proceeds to seek marketing approval in the U.S. and the European Union for dalbavancin, its treatment for certain skin infections. The company had a recent market capitalization of $156 million, according to FactSet. Shares dropped 2.7% to $8.15 in after-hours trading.

Resource Capital Corp. (RSO) said it has begun an offering of about 16.3 million shares and intends to use proceeds for general corporate purposes. The REIT had about 108.3 million shares outstanding as of April 5. Shares slipped 3.2% to $6.32 after hours.

PriceSmart Inc.'s (PSMT) fiscal second-quarter earnings rose 23% as the company continued to post double-digit sales growth at its warehouse clubs. The discount-club store operator's shares were up 3.6%, at $83.08 in recent after-hours trading, as earnings and revenue topped expectations.

SeaChange International Inc. (SEAC) swung to a fiscal fourth-quarter profit as the video-software company posted stronger product revenue and lower operating expenses. However, shares were down 6.1% at $10.71 after hours as the company offered current-quarter guidance below analyst expectations.

Synergy Pharmaceuticals Inc. (SGYP) said it intends to offer shares valued at about $90 million and wants to use the proceeds to fund research and development activities including further clinical development of its constipation drug plecanatide and other pipeline programs. The biopharmaceutical firm recently had a market capitalization of $458 million, according to FactSet. Shares were down 10% to $6.50 after hours.

 
    Watchlist: 

Blackstone Group LP is talking to several technology companies about potentially joining its bid to take computer maker Dell Inc. (DELL) private, The Wall Street Journal reported citing people familiar with the matter.

Healthcare Services Group Inc.'s (HCSG) first-quarter earnings rose 74% as the company continued to post stronger revenue and margins.

Infinity Pharmaceuticals Inc. (INFI) said its stockholders Beacon Co. and Rosebay Medical Company LP will offer 8.5 million of the drug developer's shares. Infinity, which had more than 47.8 million shares outstanding as of March 31, won't receive any proceeds from the offering.

A Nevada jury said two UnitedHealth Group Inc. (UNH) units should pay a total of $500 million in punitive damages in a case involving two members who contracted hepatitis C, an award that will draw close attention in the health-insurance industry.

-Write to Nathalie Tadena at nathalie.tadena@dowjones.com

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