Reuters: Data analytics company Sumo Logic is looking to raise $310.8M in its US IPO at a price range of $17 to $21 per share, valuing the company at over $2B  —  (Reuters) - Big data firm Sumo Logic Inc said on Tuesday it was looking to raise $310.8 million in a U.S. initial public offering that could value the company at over $2.07 billion.