Crackdown Prompts Mitsubishi UFJ Rethink on Stock Research

  • Venture with Morgan Stanley to issue reports using big data
  • Brokerages in Japan are halting earnings previews after probe

In Japan, the cushy era of analysts relying on access to company executives for advance information on earnings is over, so one of the biggest securities firms has started crunching vast amounts of public data to gain an edge.

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