CHC Group Ltd (NYSE:HELI), dELiA*s, Inc. (NASDAQ:DLIA) and Repros Therapeutics Inc (NASDAQ:RPRX) are today’s top midday gainers. Ending the week on a sour note are this Friday’s midday losers – 58.com Inc (ADR) (NYSE:WUBA), Flexion Therapeutics Inc (NASDAQ:FLXN) and Petroleo Brasileiro Petrobras SA (ADR) (NYSE:PBR).

CHC Group

CHC Group Climbs on Investment News

CHC Group Ltd (NYSE:HELI) surged +12.12% today following news that Clayton Dubilier & Rice has agreed to invest $500 million in the company. The commercial helicopter operator and Farallon Capital holding is down -29.18% year-to-date.

The share price of dELiA*s, Inc. (NASDAQ:DLIA) hit midday up +11.43% this Friday, though its price is still down -47.31% YTD. Tiger Global purchased 3.4 million DLIA assets during the fourth quarter of 2013 and has maintained the position during the first and second quarters of 2014.

Repros Therapeutics Inc (NASDAQ:RPRX) climbed +9.79% today, continuing on a positive trend in recent weeks. It reported a second quarter loss of 38 cents per share earlier this month but is still up +13.6% over the past five days. Farallon Capital has held a position in the company since the first quarter of last year.

58.com Slides on Lowered Expectations

The share price of 58.com Inc (ADR) (NYSE:WUBA) fell -4.94% today. The China-based online marketplace reported better-than-expected Q2 results yesterday but lowered its guidance for Q3. As of the second quarter of this year, Tiger Global holds 1.26 million WUBA assets.

George Soros pick Flexion Therapeutics Inc (NASDAQ:FLXN) dipped -3.81% today, putting its year-to-date loss at -11.62%. The specialty pharmaceutical company reported second quarter results earlier this month, including a net loss of $5.9 million. Despite today’s dip, its price has climbed +4.5% in the past month.

Taking the third and final spot on today’s list of midday losers is Petroleo Brasileiro Petrobras SA (ADR) (NYSE:PBR), down -3.12%. In the investment portfolio of billionaire investor Ray Dalio since the first quarter of 2013, PBR is up +23.95% year-to-date and +49.43% over the past six months.