Qihoo 360 (QIHU -1.3%) underperforms following additional negative commentary from Citron...

|By:, SA News Editor

Qihoo 360 (QIHU -1.3%) underperforms following additional negative commentary from Citron Research, which set a $5 PT for Qihoo shares several weeks ago. Citron questions the legitimacy of Qihoo's Q3 revenue figure, arguing its browser homepage ad sales are overstated. It also claims Mirae Asset's bullish coverage of Qihoo amounts to "professional malpractice."