

UPDATED 15:09 EDT / AUGUST 03 2011
Language learning app Duolingo's stock jumps on rampant revenue and user growth
APPS - BY MIKE WHEATLEY . 4 HOURS AGO
Fortinet delivers solid earnings results but guidance weighs on investor sentiment
SECURITY - BY DUNCAN RILEY . 4 HOURS AGO
OpenAI reportedly in talks for secondary sale at $500B valuation
AI - BY MARIA DEUTSCHER . 5 HOURS AGO