Frustrated Traders Missing Key Piece of Market Jigsaw Puzzle After London Firm Hacked

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“Frustrating,” “very annoying” and “left in the dark.”

These and similar expressions have been used to describe the near month-long blackoutBloomberg Terminal on key global investor positioning reports that cover bets on everything from Treasuries to soybean futures — the casualty of a ransomware attack on financial firm ION Trading UK.