Celyad SA (NASDAQ: CYAD) gained about 10 percent in late trading Friday to $60.10. The Belgium-based drug company launched its initial public offering at $68.56 and closed down more than 15 percent earlier Friday.
Greenhill & Co., Inc. (NYSE: GHL) gained more than 5 percent in Friday's extended session, trading at $42.23. The financial and advisory services company didn't issue news.
Braskem SA (NYSE: BAK) rose about 3 percent in late trading to $8.27. The Brazilian thermoplastic resins producer closed down earlier by more than 11 percent. Its CEO was reportedly was arrested in a graft investigation on Friday.
Ctrip.com International, Ltd. (NASDAQ: CTRP) bounced up nearly 3 percent after the bell Friday to $73.70 after closing down by nearly 4.5 percent. The China-based travel service provider priced a $1.1 billion offering of convertible notes Thursday.
Silver Bay Realty Trust Corp (NYSE: SBY) rose about 2.5 percent to $16.10 in late trading Friday on no obvious catalyst.
InvenSense Inc (NYSE: INVN) fell 3.4 percent to $15.50. The company, which provides gyroscopes, accelerometers, compasses and pressure sensors, didn't issue news.
Dorchester Minerals LP (NASDAQ: DMLP) dipped 2.8 percent to $22.90. The Dallas-based mineral interests company didn't issue news Friday.
TransMontaigne Partners L.P. (NYSE: TLP) declined 2.3 percent to $38 in late trading, although the terminal and transportation company for liquids didn't issue news.
Exelixis, Inc. (NASDAQ: EXEL) dropped 2 percent after the bell to $3.76. The biopharma company had closed up about 7.6 percent earlier on no obvious catalyst.
Reynolds American, Inc. (NYSE: RAI) fell nearly 2 percent to $75.53. As of Friday's closing, the tobacco company was up 7 percent during the past five trading days.
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