A look at UK hedge fund Man Group's ArcticDB, an open-source tool used internally and by customers like Bloomberg to analyze daily stock trading data and more (Isabelle Bousquette/Wall Street Journal)

Isabelle Bousquette / Wall Street Journal:
A look at UK hedge fund Man Group's ArcticDB, an open-source tool used internally and by customers like Bloomberg to analyze daily stock trading data and more  —  The need to analyze an overwhelming influx of stock data—and to do it fast—pushed Man Group to become its own kind of tech company